new battery dead? - Nexus 6P Q&A, Help & Troubleshooting

new battery dead? - Nexus 6P Q&A, Help & Troubleshooting

Guys I need some help pls.
I ordered new battery, yesterday I opened phone carefully and replaced old battery, all went smooth.
But when try to switch on phone doesnt start. When connecting to psu it starts normally, battery shows 100% and not charging. If remove cable phone turns off instantly.
I wiped cache, dalvik, batterystats, no luck. Tried different psu, the same
I put old battery back and phone turns on and works ok, same as before.
Is possible that new battery coud be completely dead?
The new battery printed manufactured date is older than my current battery. 06-2015 vs 12-2015.
Is there anything else I should try , beside rma?
Thank you

csjneek said:
Guys I need some help pls.
I ordered new battery, yesterday I opened phone carefully and replaced old battery, all went smooth.
But when try to switch on phone doesnt start. When connecting to psu it starts normally, battery shows 100% and not charging. If remove cable phone turns off instantly.
I wiped cache, dalvik, batterystats, no luck. Tried different psu, the same
I put old battery back and phone turns on and works ok, same as before.
Is possible that new battery coud be completely dead?
The new battery printed manufactured date is older than my current battery. 06-2014 vs 12-2014.
Is there anything else I should try , beside rma?
Thank you
Click to expand...
Click to collapse
Yes, there's a battery thread, where good replacements are linked. A 3 year old battery isn't a good replacement. Give it back to the seller. And did you try to put your "new battery" a second time in your phone, may you just didn't connect the cable correctly at first try. ???

coremania said:
Yes, there's a battery thread, where good replacements are linked. A 3 year old battery isn't a good replacement. Give it back to the seller. And did you try to put your "new battery" a second time in your phone, may you just didn't connect the cable correctly at first try. ???
Click to expand...
Click to collapse
Thanks for reply,
Yes I did with case open swapped old and new one multiple times to be sure, old one turns on and charging, new one don't.

csjneek said:
Thanks for reply,
Yes I did with case open swapped old and new one multiple times to be sure, old one turns on and charging, new one don't.
Click to expand...
Click to collapse
Then buy a better replacement, may not a 3 year
old one

Do search for " Cameron sino" for nexus 6p on either eBay or Amazon and buy that battery. I got mine for 25.00 . My phone charges to 100%, discharges slowly and doesn't shut off anymore at less than 20% battery like it did before. Accubattery app on playstore shows my battery health at 97% now ,the stock one was at 67% health. It does take a couple of full charges and full discharges to manage that health readout. Cameron sino seems to be the best one I've had so far. Just make sure you charge it to 100 and use it till it shuts off the first few times and profit. Trains the battery to fully charge and discharge . People make the mistake of charging when it isn't dead and that slowly suck the life out of your new batteries.

wmills said:
Just make sure you charge it to 100 and use it till it shuts off the first few times and profit. Trains the battery to fully charge and discharge . People make the mistake of charging when it isn't dead and that slowly suck the life out of your new batteries.
Click to expand...
Click to collapse
This might be true for nickel cadmium and nickel-metal hydride batteries , but it doesn't apply to lithium ion batteries. If anything, it's better to charge the battery when it still has ~20% left and stop charging around 80%. Lithium ion batteries don't like being too discharged or too charged as it causes them to wear out faster.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
https://lifehacker.com/smartphone-battery-myths-explained-1735327089
https://www.cnet.com/how-to/true-or-false-battery-myths-that-need-to-die/
http://www.androidauthority.com/battery-myths-688089/

Whoa great been doing all wrong ,you are a wealth of knowledge

wmills said:
Whoa great been doing all wrong ,you are a wealth of knowledge
Click to expand...
Click to collapse
After quickly destroying the battery in my Galaxy Nexus I decided to research ways to prolong the life of the battery in my smartphone, especially since the phone I replaced it with (Nexus 6) didn't have a removable battery. So far they've worked great. Several tips I have are:
1. Plug in when you get to ~20-25%. If you want to be super extreme you can use an app like Battery Charge Limit to stop charging at 80%. Like I said earlier, discharging/charging too far is bad for the battery.
2. Don't use fast charging. This heats up the battery and wears it out faster. I've used the 1 amp charger from my Galaxy Nexus on my Nexus 6 and 6P and it has definitely helped prolong the life of the battery.
3. Don't use the phone while charging. This causes it to heat up and wears out the battery faster. Light things like texting or browsing XDA with their app won't heat it up too much, but gaming or installing ROMs while plugged in is very bad.
4. Don't charge the phone overnight while it's on. Obviously after the phone reaches full capacity it stops charging, but if your phone is on and running stuff in the background the battery will drain. When it drops to 98% it starts to trickle charge again until it reaches full capacity. This cycle of charging and draining will occur several times throughout the night and adds unnecessary wear cycles to the battery. It's best to charge while the phone is off to avoid this cycle.
5. Don't let the battery get too hot or too cold. Low temperatures can be just as harmful to batteries as high temperatures. If it's 100°F or 0°F outside and your battery is getting very hot or very cold it's best to just leave the phone in your pocket until you're in a place with a more reasonable temperature, such as inside a building or something. Lithium ion batteries prefer a happy medium, which is usually around room temperature (~68°F).
6. Keep the phone cool while doing CPU intensive tasks that cause it to heat up. When I install a ROM and boot it for the first time, wipe cache/dalvik after installing something, run the auto patcher in WakeBlock, or anything else that causes the CPU to run at a high frequency for prolonged periods of time I remove my phone from its case and place it in front of a fan on high speed. This keeps it from getting too hot, but doesn't let it get too cold. Placing your phone in the fridge/freezer will also keep it cool, but lets the battery get too cold, so that method is not recommend.
7. I use an app like EX Kernel Manager to display the battery/CPU temperatures in the notification area. If I notice the temperatures are getting too high or too low I stop using the phone until it cools down or I'm somewhere warmer. This can be annoying on Oreo because you get notifications of apps running in the background, but that's pretty easy to block
Keeping the phone cool can also help avoid the defect in the Snapdragon 810 that causes the BLOD (boot loop of death), which usually occurs when the solder holding the processor to the mother board develops cracks.
Based on posts I've seen in this forum most people begin to experience battery or boot loop issues after about a year or so. I've had my 6P for about a year and have not had any battery, heat, or boot loop issues. In my experience, taking care of your phone and being "extra nice" to it is the key to prolonging its life. After 2 years of using my Nexus 6, battery life on the day I sold it was just as good as day I unboxed it. I don't want to jinx myself, but the same goes for my 6P. After almost a year of use I can still go 16+ hours off the charger with 4+ hours of SOT and 30% or more left in the battery when I plug it in at night.

I'm gonna try this

Face_Plant said:
After quickly destroying the battery in my Galaxy Nexus I decided to research ways to prolong the life of the battery in my smartphone, especially since the phone I replaced it with (Nexus 6) didn't have a removable battery. So far they've worked great. Several you're l tips I have are:
1. Plug in when you get to ~20-25%. If you want to be super extreme you can use an app like Battery Charge Limit to stop charging at 80%. Like I said earlier, discharging/charging too far is bad for the battery.
2. Don't use fast charging. This heats up the battery and wears it out faster. I've used the 1 amp charger from my Galaxy Nexus on my Nexus 6 and 6P and it has definitely helped prolong the life of the battery.
3. Don't use the phone while charging. This causes it to heat up and wears out the battery faster. Light things like texting or browsing XDA with their app won't heat it up too much, but gaming or installing ROMs while plugged in is very bad.
4. Don't charge the phone overnight while it's on. Obviously after the phone reaches full capacity it stops charging. If your phone is on and running stuff in the background, the battery will drain a little. When it drops to 98% it starts to trickle charge again until it reaches full capacity. This cycle of charging, draining, and recharging will occur several times throughout the night and adds unnecessary wear cycles to the battery. It's best to charge while the phone is off to avoid this cycle.
5. Don't let the battery get too hot or too cold. If it's 100°F or 0°F outside and your battery is getting very hot or very cold it's best to just leave the phone in your pocket until you're in a place with a more reasonable temperature, such as inside a building or something
6. Keep the phone cool while doing CPU intensive tasks that cause it to heat up. When I install a ROM and boot it for the first time, wipe cache/dalvik after installing something, run the auto patcher in WakeBlock, or anything else that causes the CPU to run at a high frequency for prolonged periods of time I remove my phone from its case and place it in front of a fan on high speed. This keeps it cool, but not too cold, and doesn't allow it to get too hot. Don't place it in the fridge/freezer. Doing that will cause the battery to become too cold.
7. I use an app like EX Kernel Manager to display the battery/CPU temperatures in the notification area. If I notice the temperatures are getting too high or too low I stop using the phone until it cools down or I'm somewhere warmer. This can be annoying on Oreo because you get notifications of apps running in the background, but that's pretty easy to block
Keeping the phone cool can also help avoid the defect in the Snapdragon 810 that causes the BLOD (boot loop of death), which usually occurs when the solder holding the processor to the mother board develops cracks.
Based on posts I've seen in this forum most people begin to experience battery or boot loop issues after about a year or so. I've had my 6P for about a year and have not had any battery, heat, or boot loop issues. In my experience, taking care of your phone and being "extra nice" to it is the key to prolonging its life. After 2 years of using my Nexus 6, battery life on the day I sold it was just as good as day I unboxed it. I don't want to jinx myself, but the same goes for my 6P. After almost a year of use I can still go 16+ hours off the charger with 4+ hours of SOT and 30% or more left in the battery when I plug it in at night.
Click to expand...
Click to collapse
Definitely going to try these methods on my brand new Nexus 6p. Thanks for posting that. Very helpful.

Related

This is why your battery drops 10-15% in the first 20 minutes.

Plain and simple: When the Evo is fully charged, it begins running off its battery until you plug it back in. It DOES NOT trickle charge whatsoever after it reaches 100%. When you're using your Evo on the charger, and it's showing full 100% charge, it is running off the battery, not the AC plug. And then when you unplug it, well, we all know what happens next. The battery meter drops insanely fast to the actual charge of the battery, which could be very low, depending on how long it's been sitting idle at 100% on your charger.
So all those times you've charged your Evo overnight, only to take it to work the next day and be at 80% within an hour? Your Evo was running off its battery for what I'm guessing was most of the night. It takes my Evo about an hour to two hours to fully charge back to 100%. Let's say you put your Evo on the charger at 11PM, it'll reach full charge by 1AM at the latest, and then run off its battery until whenever you take it off the charger in the morning.
Workarounds?
1) Turn your Evo off while it's charging.
2) If you must leave it on for an alarm clock, put it in airplane mode and end all CPU intensive tasks to minimize battery drain.
3) When you wake up, unplug it for 10-20 minutes (still experimenting with this number), and then plug it back in to top it off. Once it reaches 100%, take it off the charger, and go about your day.
Try it out for yourself. When your Evo is 100% charged, take it off the charger immediately, and I highly doubt you will lose the 10%-15% within minutes. Please share your findings.

Er... Point of note, mine does it even if I pull it off the charger right when it turns green.

Post some technical schematic or other type of proof that shows that this circuitry isn't available in the EVO. That will prove beyond a doubt if what your saying is true.
That being said, only a group of the most retarded electrical engineers would design a charging system as you've described. It is INSANELY easy to build Li-Polymer charging circuitry that does the following (and it pretty much has to do these):
1. Detects battery temperature, and disables charging as a protective measure. In an emergency case it should shut off the device it's powering to allow the battery to cool down. This is a design requirement, or else your house burns down as you dump water on a Lithium fire thinking it's going to put it out. If you have a HERO, you can easily test this. Running the wireless tethering, GPS/Navigation, and Music with the screen running heats up the phone a ton. You'll notice the status light blink green once, then red a couple of times. This means that it's plugged in but not charging. Cool the phone down and it turns solid red again (charging).
2. Disable charging cycle when battery reaches a certain voltage. VERY SIMPLE voltage detection circuitry! The designer can of course adjust a gap to have charging turn back on when it dips below a certain voltage. Usually since this circuitry can be made with a decent amount of precision, that "turn back on" voltage ends up being roughly when the battery discharges to maybe 99.5%. That's just a guess, I admit but there's no harm in having the circuit switch on and off, even if it's often.
There are also a few other circuits that prevent the cell from blowing up in your pocket, like a current sensor to prevent an overcurrent. There's also some stuff that prevents you from being able to discharge the cell below it's avalanche voltage. In case you don't know what that is, when a Li-Ion battery discharges to a certain voltage, it avalanches to 0 (quickly falls). If it hits that point, you've pretty much ruined the battery and it will never charge the same again.
Anyway, this is stuff they taught and had design labs on back in college. While I have no actual proof that the phone wasn't designed as the OP describes, I find it highly unlikely. If this is the behavior that the circuitry exhibits, I would find it easier to believe that it's a design flaw, probably because some idiot didn't compile the correct bill of materials.

I haven't got any schematics or any sort of technical information on the subject. All I know is, it works wonders for me. When I take my Evo off the charger in the morning, it literally drops to ~90% within minutes. Once it does that, if I place it back on the charger for ~20 minutes, it charges back to 100% and stays there for 45 minutes to an hour.
I'd urge anybody who is noticing the immediate 10% to 15% drop in battery to give this a shot.

I would turn it off while I'm charging it overnight, but I use it as my alarm clock

Me Too
I am seeing the exact same behavior as the OP. This is really lame. Because of this, most people will end up losing 10% of their battery every day. Pretty lame.

I charge my phone overnight every night. Never noticed a problem and I just checked my battery and its at 88% and has been off the charger for 2.5hours so I'm not seeing the rapid discharge issue some people are seeing.

I don't think so man, I leave my screen on full brightness while it's charging, and if what you said was true it would go dead on the charger.
I think it's more likely the cells haven’t charged equally, so you get a big initial drop.

Grims said:
I don't think so man, I leave my screen on full brightness while it's charging, and if what you said was true it would go dead on the charger.
I think it's more likely the cells haven’t charged equally, so you get a big initial drop.
Click to expand...
Click to collapse
I'm beginning to think that once the battery reaches 100% full, it runs off the battery until it reaches some arbitrary percentage. At which point it starts charging until it reaches 100% again, and then continues this cycle.
I'm testing a few other things right now. Part of me is convinced it reports 100% charge when it's actually below that level.

Krynj said:
I haven't got any schematics or any sort of technical information on the subject. All I know is, it works wonders for me. When I take my Evo off the charger in the morning, it literally drops to ~90% within minutes. Once it does that, if I place it back on the charger for ~20 minutes, it charges back to 100% and stays there for 45 minutes to an hour.
I'd urge anybody who is noticing the immediate 10% to 15% drop in battery to give this a shot.
Click to expand...
Click to collapse
I'll try this out to see if I can get the same kind of behavior. I guess I honestly haven't looked to see if the phone drops 10-15% after pulling it off.
Krynj said:
I'm beginning to think that once the battery reaches 100% full, it runs off the battery until it reaches some arbitrary percentage. At which point it starts charging until it reaches 100% again, and then continues this cycle.
I'm testing a few other things right now. Part of me is convinced it reports 100% charge when it's actually below that level.
Click to expand...
Click to collapse
This is what should be happening I believe, but I'd be surprised if it was set to such a huge swing like 10-15%
Grims said:
I don't think so man, I leave my screen on full brightness while it's charging, and if what you said was true it would go dead on the charger.
I think it's more likely the cells haven’t charged equally, so you get a big initial drop.
Click to expand...
Click to collapse
This is an interesting theory. I do know that when you have multiple Li-Ion cells in a battery pack, if they discharge unevenly, you have to go off of the lowest charged cell. Again, if a cell were to drop below the avalanche voltage, you'd ruin the pack all together. On the other hand, the circuitry should let ALL cells charge to 100% so it's even again. Maybe they screwed this up, that design isn't so easy! Perhaps it detects one cell as 100% and shuts off the charge. Therefore, one could surmise that if you started with an unevenly charged battery pack, you'd have an immediate decrease in charge to the rating of the lowest charged cell. The good news (maybe) is that this is sometimes implemented with software. That means that HTC could release a bug fix for this, or if we have a savvy dev, they could try to fix it. We just need to prove the theory though.
This is all just a guess, keep that in mind. If I notice something like this with my phone today, maybe I can tear apart the battery and measure the voltage on each cell (if it even has multiple cells). I have a spare, so maybe I'd be up for this. Krynj (or anyone), if you have the HTC Hero, try charging your battery pack with it, see if it exhibits the same behavior on the Hero itself. If it doesn't, then try putting it back into the EVO and see if after a night of charging, it still drops 10-15% after disconnecting it from the AC.

The reason why the battery dies so fast has something to do with the memory card. Charge your phone and take the SD card out and watch it stay at 100% for a long as time. Then do it again with the SD card in and watch it dip down fast.

Apple laptops don't charge unless battery is below 90%. If you plug in the AC and the battery is above 90%, it will just run off AC power but I don't think the battery drains any then.

My battery life has been less than stellar, but I didn't notice it dropping 10-15% instantly off the charger. I did notice that it'd drop about 10% after driving to work with xiialive streaming, which was unusual to me. The battery would start running out after about 9 hours at work. I'd be in the yellow by the time I got home, and the battery would be complaining for a charge in the evening. So that's roughly 12 hours I would be getting out of the phone after normal use.
Since I'm suspecting an issue with the charging circuitry, I just recently tried charging my battery with the Hero. After it was fully charged, I put it back into my EVO last night and haven't charged it since. It's been running 13 hours, and is still nearly full green. The charge is at about 70%. I've been trying to graph the discharge all day too. It only dropped to 87% over night, dropped to 80% when I drove to work (xiialive), and then down to 74% after I spent some time setting up icons and modifying my home screen. This is...hands down a butt ton better than the past week.
I'm not using 4G.
WiFi is off.
3G is on.
GPS is on.
Not running a live wallpaper.
Sync is running at default settings.
Widgets that could be updating constantly:
I have the Clock/Weather HTC widget running.
I have the Dictionary.com "word of the day" widget.
I have the Friendstream Widget running.
Craigslist Craignotifica app is running, set to notify me with search results.
The results are inconclusive though. Yesterday, I wiped and re-flashed DamageControl 3.2.x from scratch (backed up all apps with Ti-Backup, this means Android Market won't be notifying me if there are app updates -grumble-). So, somewhere between re-flashing and also charging my battery with the Hero caused this turn around.

apollooff320 said:
The reason why the battery dies so fast has something to do with the memory card. Charge your phone and take the SD card out and watch it stay at 100% for a long as time. Then do it again with the SD card in and watch it dip down fast.
Click to expand...
Click to collapse
Interesting.....Will have to give a try. Will report back later.

I'm waiting for some definitive results with the "use another charging device or battery" method. It seems that the EVO just sucks at recharging the battery since people who have used another phone or a separate charger seem to report better results.
I leave my phone off at night and charge it - when I turn it on in the morning it still drops 5-10% in the first 20 minutes. But during the day it drops REALLY slow, so I still can get about 13-16 hours before 15% easily.
I have manual account sync, 3g only, wifi at home, usually gps is off, auto backlight settings for screen, and I don't run too many apps in the background, I just use them when I need them.

Has anybody found a solution to this? It's really starting to bother me. I've noticed that I don't seem to have the issue if I charge -> recovery -> wipe battery stats -> reboot. That kind of leads me to believe that something is inaccurate about the battery stats and the phone instead uses the actual raw value provided by the battery instead of whatever it is that it does with the battery stats.

I can tell you this, I bought two of the cheap battery chargers off of ebay and I have two OEM evo batteries. I don't even plug my phone in anymore. I get an hour of standby at 100% from those chargers and it falls instantly when charging from the phone. I just run them down then swap them out. I couldn't be happier and they are only like 10 bucks each with 2 batteries each.
Sent from my PC36100 using XDA App

jnewkirk10 said:
I can tell you this, I bought two of the cheap battery chargers off of ebay and I have two OEM evo batteries. I don't even plug my phone in anymore. I get an hour of standby at 100% from those chargers and it falls instantly when charging from the phone. I just run them down then swap them out. I couldn't be happier and they are only like 10 bucks each with 2 batteries each.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
can you post a link or ebay or where ever u bought it from?

Try this I'm doing it from the phone
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250641711190&ssPageName=STRK:MEWNX:IT#ht_1991wt_913
Sent from my PC36100 using XDA App

apollooff320 said:
The reason why the battery dies so fast has something to do with the memory card. Charge your phone and take the SD card out and watch it stay at 100% for a long as time. Then do it again with the SD card in and watch it dip down fast.
Click to expand...
Click to collapse
If you have apps on your sd card that are running then yes that could be the case. SD cards need power to work but I dont know how much they draw..

Constant usage battery life

From what I have seen, most battery life comparisons/stats are usually done with the phone in standby/screen off majority of the time.
I decided to do it the other way.
Last night to this morning:
I tried charging my battery to 100% but time constraints only had me charge it to around 84% (late for work).
I don't use/have a charger at work nor do I have one in my car. I work 8 hours straight (11pm - 7am) and I almost always stream pandora the entire time.
I am using the seidio extended battery and the only thing that stays off is wifi when I am not within range of any kind of open network (starbucks) or my own saved connection list. 4g/3g, gps, and background data are constantly on.
So, from 84% left the house and started streaming pandora in the car. Get to work about 15 minutes later with no interruption in streaming (just turned the volume down). I do shut off my screen while streaming when I put the phone in my pocket.
Surfed the web, watched some youtube videos, checked gmail and facebook (which auto sync about every hour and gmail notifies me of every single email I get), and played some games here and there (nothing great) throughout the night.
Basically my intent was to never let the phone sit and do nothing. The entire time pandora was streaming (browsing the net and streaming, checking gmail/facebook and streaming) but youtube would always stop pandora.
Got 8 hours of constant use. I don't want to say moderate/light/heavy as that scale changes from person to person. Moderate for one person may be heavy for the next.
I charged the battery in the phone because I don't have an external charger for it. Although I may get one because my charging method still involves me taking the battery out of the phone.
No task killers, no setcpu (I am rooted), no custom rom (from the dev forum).
I am using bakedsnack kernel #4, launcherpro, and I have personally uninstalled a crap load of stuff (even htc sense and rosie altogether).
My opinion is that all these gimmicks that we have to go through to get good battery life while in standy are not necessary. What is necessary is for the charging system in the evo to be revamped. This is my own opinion, but I think the charging system in the evo skips stage 2 of the charging process http://www.batteryuniversity.com/partone-12.htm which is why (this is what I think, I am no expert) so many people see the sudden drop from 100% down to whatever shortly after they unplug their charger.
It kind of makes sense as to why some people who charge their stock batteries in the ebay externals get better battery life, it's because they are actually being charged properly.
Again, this is just my opinion and I am in no way an expert on this. Just disclosing my experience and observations of my phone and it's behavior. Take from it what you will.

That's pretty amazing dude. Me personally would consider your use for this test to be pretty heavy. I'm more than impressed to see 37% battery life. And from what I've been reading up on the external charger is definitely the way to go. Although it's quite a pain to have to charge our evos like this just for maximum battery life. Hopefully in the future releases of phones we won't have tis do things like this. As mentioned in another post the switching of the battery to charge it will eventually make the back door loose or maybe even break sooner than planned, which is a problem for people who don't have extra doors. I guess it's not a bad investment to buy extra doors though.
Sent from my PC36100 using XDA App

lovethyEVO said:
From what I have seen, most battery life comparisons/stats are usually done with the phone in standby/screen off majority of the time.
I decided to do it the other way.
I am using the seidio extended battery
My opinion is that all these gimmicks that we have to go through to get good battery life while in standy are not necessary.
It kind of makes sense as to why some people who charge their stock batteries in the ebay externals get better battery life, it's because they are actually being charged properly.
Click to expand...
Click to collapse
Here is my take and i edited your post down to the points i am discussing.
First I like the fact you realize most battery tests and many of the people getting ridiculous battery life are idle most of the time (even if they say they are moderate use normally they have 1-3 hours of moderate use out of the 30 hours battery life they claim). I think showing actual usage time is much more impressive.
Now if you are going to do a battery post and talk about opinions and what your battery life is ... i don't suggest using an extended battery. you show that over aprox 8 hours of use (wont classify it as heavy moderate etc since you didnt) you lost about 50% the problem here is the extended battery from seidio has a much larger capacity then your standard htc battery that comes with evo (even if it doesnt actually have the 3500mah it is still a lot more). On a est i did i could play a movie on a stock battery for just over 5 hours before the battery drained using nothing but the stock install of a rom and without changing settings to turn things off etc. So in my opinion the battery life you are showing is actually a little low for that battery but that not really the point.
now as for the evo charging incorrectly. the reason why peoples batteries drop quickly the first 20-30 minutes (for most who have a correctly calibrated "battery") is because EVO doesn't have a trickle charge. this doesnt mean the evo isnt charging the battery correctly. the idea behind not having a trickle charge is it helps prolong the life of the battery it self at the cost of 0-10% charge depending on where it is when you take it off the charger.
While i personally would rather have the trickle charge and have to buy replacement batteries more often. it isnt that the evo charges incorrectly it. They jsut made the choice to try to make the battery itself last as long as possible at the cost of some battery use time depending on when you take it off the charger.

These are my latest seidio 3500 numbers with correct battery conditioning. Going to try and duplicate these numbers. Most of about 10 hours was slacker and pandora. This was from 100 to 14 percent on 3500 seidio. Pics for your pleasure and debate. I was able to get another 8 hours standby from this point and hour of lets golf before battery died. That was my 2nd conditioning of the battery. Going on 3rd full slow trickle charge up now. The trickle charge on battery wall charger takes about 12 hours wtf but worth it. I just use my cheap china 3000mah to cover the time.
Sent from my PC36100 using XDA App

omegasun18 said:
Here is my take and i edited your post down to the points i am discussing.
First I like the fact you realize most battery tests and many of the people getting ridiculous battery life are idle most of the time (even if they say they are moderate use normally they have 1-3 hours of moderate use out of the 30 hours battery life they claim). I think showing actual usage time is much more impressive.
Now if you are going to do a battery post and talk about opinions and what your battery life is ... i don't suggest using an extended battery. you show that over aprox 8 hours of use (wont classify it as heavy moderate etc since you didnt) you lost about 50% the problem here is the extended battery from seidio has a much larger capacity then your standard htc battery that comes with evo (even if it doesnt actually have the 3500mah it is still a lot more). On a est i did i could play a movie on a stock battery for just over 5 hours before the battery drained using nothing but the stock install of a rom and without changing settings to turn things off etc. So in my opinion the battery life you are showing is actually a little low for that battery but that not really the point.
now as for the evo charging incorrectly. the reason why peoples batteries drop quickly the first 20-30 minutes (for most who have a correctly calibrated "battery") is because EVO doesn't have a trickle charge. this doesnt mean the evo isnt charging the battery correctly. the idea behind not having a trickle charge is it helps prolong the life of the battery it self at the cost of 0-10% charge depending on where it is when you take it off the charger.
While i personally would rather have the trickle charge and have to buy replacement batteries more often. it isnt that the evo charges incorrectly it. They jsut made the choice to try to make the battery itself last as long as possible at the cost of some battery use time depending on when you take it off the charger.
Click to expand...
Click to collapse
50% loss over 8 hours of near constant use (my awake time shows that it did manage to sleep somehow even though I streamed pandora constantly) on any battery (extended or not) is actually a good thing as it shows that even with the phone fully bogged down (almost all radios on) it can last a full work day (which is what most people are concerned about).
I still believe the evo does not charge the batteries correctly and it is not solely related on the absence of a trickle charge.
Again, from my observations over the course of the past three weeks. I started with what my battery was calibrated to according to the phone. Let it drain down to about 15% (according to the phone) and wiped the battery stats and did a different charging method from the htc "rain dance".
Here is where my opinion of the evo not charging properly comes into play.
From 15% to 100% charge (charged while phone and screen are on to monitor voltage, temp, mA draw, etc.) took about an hour +/- a couple minutes. As soon as the led turned green (yes, I literally sat at my phone watching the percent slowly rise) I unplugged the charger and noted the resting voltage level and percent (according to three seperate battery status applications). Once noted, I powered down the phone. After the screen completely shut off I removed the battery and tested the voltage. I did this for my own information because I wanted to verify the phone itself was actually reporting the voltage levels correctly. It was.
Now, recall that I had just charged the phone to 100% and had wiped battery stats prior to charging.
Replaced the battery back into the phone and powered up. Normally people see a jump in battery percentage when they power down and back up. Not in my case. To my amazement, the evo reported my battery as being at 78% charge level. So I went from being 100% charged down to 78% percent charge all from powering down, removing the battery, checking voltage, and then replacing battery and powering up. Time to power down, remove, check voltage, replace and power up is somewhere around the one minute mark +/-.
Again, referencing the link I provided earlier about charging li-ion batteries, the evo seems to skip stage 2 of the charging process which usually results in about a 70% charge (according to the link).
Charged it again from the 78% mark to 100% and the charging time took just over an hour to get back to 100%. Same routine, check voltage on phone, power down, remove battery, check voltage on mmeter, replace battery, power on, check levels.
Second time around I dropped from 100% charge to about 89%. Voltage levels were always accurate. Charged again and took about another hour +/- and finally achieved a charge to where it would not fall or rise between a power down (97% seems to be my cap which is fine since I don't want to truly charge the battery to 100%).
To test the discharge rate I tried my best to keep the battery running condition identical for each discharge run.
I monitored the battery temp, cpu temp, battery voltage, amp draw, and cpu load.
Streaming only pandora and nothing else I usually managed to keep the amp draw to around 300 - 360mA with the screen on. This was my way of measuring the discharge rate without access to equipment that could give the battery a steady discharge load.
Every time the percentage dropped one I would note the volts, temps, amp draw and cpu load. Across the board temps and cpu load remained close to constant as the phone wasn't doing too much multitasking.
At this point, I have about 4 full voltage readouts from 100% down to 15%. Without wiping battery stats, if I charge the phone with my method (charge to 100%, power down, remove battery, replace battery, power up and recharge) my past voltage readouts coincide with my battery readouts on the phone (87% falls within a certain voltage range and so on) but if I just charge the battery until the phone says it's 100% then the readouts on the phone no longer fall within my past readouts until I go back to my charging method. This tells me that if I let the evo charge the battery the way it is programmed to (hardware or software) then it is not actually charging the battery to its full potential (not necessarily 100%).
Across the board the cpu load and the temps rarely drastically changed as it wasn't running multiple tasks at once. This is just my own observations and tests that I did/started doing for my own intellectual reference.
I have done the same charging method with my wife's evo and stock battery (1500 htc oem). I wiped her stats but only managed to get two full voltage readouts with her phone. She has stated that her battery does last longer than before and she is only rooted to remove bloatware. She is running stock rom, stock kernel, no task killers, no memory managers, and her radios and settings are close to mine (she gets more mail and facebook notifications than I do).
Again, this is just my opinion and personal observations. I did this solely because I got tired of having to constantly turn things on and off just to use them. My past phones never had this problem and I don't think the evo should have to be babied just to get good battery life. I still believe it all lies in the charging system of the phone and not necessarily the battery (extended versus stock).

Hey, what battery conditioning did you guys do? There's a ton of different suggestions and I am wondering if one or two have finally been proven to not be placebo.

I decided to do the HTC charging method when I changed roms to cm6. I went into hboot after and wipe stats. Turned on and took about 20 minutes to get to 98% using internet. Anyways I let phone die. Plug it in and I have system monitory with history monitoring. So I go to bed, and wake up to expect 100%. Nope 80%. Checked the monitor and trickled from 80% to 70% for 2 whole hours. I did the HTC thing again for full charge. Repeated. Only charges to 80%!!!! I changed roms. Same thing.
Sent from my PC36100 using XDA App

martyzidek said:
I decided to do the HTC charging method when I changed roms to cm6. I went into hboot after and wipe stats. Turned on and took about 20 minutes to get to 98% using internet. Anyways I let phone die. Plug it in and I have system monitory with history monitoring. So I go to bed, and wake up to expect 100%. Nope 80%. Checked the monitor and trickled from 80% to 70% for 2 whole hours. I did the HTC thing again for full charge. Repeated. Only charges to 80%!!!! I changed roms. Same thing.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Your situation also points to my opinion that the charging system on the evo does not charge correctly. I am also thinking that the battery stats dont play a huge role but I still jave more monitoring to do.

I also prefer the constant-use benchmarks, and did one myself as well. Charge to 100% and then stream DI.fm using XiiaLive (96Kbps MP3) through WiFi (router in same room) + full brightness + screen ON (no timeout). My poor Evo lasted 3:55 before forced shutdown . Btw, running Fresh v3.1.0.2 with netarchy v4.1.8-cfs, no SetCPU or any other "battery saving" tools.

frifox said:
I also prefer the constant-use benchmarks, and did one myself as well. Charge to 100% and then stream DI.fm using XiiaLive (96Kbps MP3) through WiFi (router in same room) + full brightness + screen ON (no timeout). My poor Evo lasted 3:55 before forced shutdown . Btw, running Fresh v3.1.0.2 with netarchy v4.1.8-cfs, no SetCPU or any other "battery saving" tools.
Click to expand...
Click to collapse
I am at work now and when I get home I plan on charging the stock battery as best as I can and doing another constant use run to satisfy the crowd who run the stock battery.

Battery Calibration process

Is this the definitive way to do it?
http://hemorrdroids.net/battery-calibration/
Those steps came from here, xda devs.
1. Run the device down until it turns itself off.
2. Turn it back on and wait for it to turn itself off again.
3. Remove the battery for 10 seconds.
4. Replace the battery, but leave the device off.
5. Charge the device until full and then for another hour.
6 **Root users only** Using a Terminal Emulator, type “su” enter, followed by “rm /data/system/batterystats.bin”
7. Run the device’s battery down until it turns itself off.
8 .Turn the device on and charge for at least 8 hours.
9. Unplug the device, turn off, then charge for another hour.
10. Unplug the device, turn on, wait 2 minutes.
11.Turn off again and charge for another hour.
12. Restart and use as normal.
Quite a performance! Does it preserve battery lifespan, or is it more to do with slowing down battery drain and does it really work?
He mentions 2 interesting things:
"Generally charge them before they get lower than 50%". I didn't know that, so it's actually better to charge more often and not let it drain down?
"USB charging is actually better for the battery and you may get up to 1 hours more standby time." So you gain an hour standby but it takes twice as long to charge the phone.

Nice manual
Will try it
Sent from my GT-I9100 using Tapatalk

Some will say that its complete nonsense .
Overcharge for 8 hours ??? how does the battery not turn charging off at 100%
Recharge 50% the accepted figure is not to go below 20% to often .
They may be right or wrong their are so many contrasting views on battery charging .
jje

Discharging battery and then reloading it fully, it's the normal procedure for battery calibration for almost all the devices in the world (including computers, etc.).
Step 8 to 11 seems quite a bit strange however.

hm, just seen a different way to calibrate the battery. basically, you drain the battery, take it out for a couple of minutes, put back in, then try to turn it on to make sure it's completely flat.
then you charge it fully, then boot to recovery and wipe battery stats then drain and fully charge. so... which one is more likely to be the better?

that guy also advises to repeat that 12 step, 1-2 day long tedious procedure "every month or so".
it is lunacy honestly speaking

does it work? did he died ?

LOL I dont understand .... I just read in another day that NEVER LET BATTERY GO LOWER THAN 15% and know I read "drain drain drain" Oh welll ...
I also thought that at 100% the charging process stops.

Although this thread is about battery calibration, these questions about battery charging always pop up.
Battery calibration is the process by which you set your device with your battery data.
Every single battery is slightly different. Although there are minimum stantards to every spec of the battery, each battery is different.
Calibrating your battery is nothing more than setting your phone to the real specs of your own battery (since the phone comes configured with the battery factory standards). For example, your phone may be set to use a battery which maximum charge is 1650 mAh, but your battery has a maximum charge of 1625 mAh. That may be within the acceptable factory standard, meaning you have a normal battery, but that also means that your phone will never indicate a 100% charge after you unplug the charger.
If you calibrate that hypothetical battery, you will "tell" your phone that its maximum charge capacity is actually 1625 mAh, meaning from that on your phone's battery indicator will be more accurate.
For that reason, it is necessary to fully discharge and fully recharge your battery for the calibration process, since your device must read the actual specs (minimum charge, maximum charge, charging current, etc) of the installed battery.
I don't know about how many times this full cicle (discharging and recharging) must be performed, but that is the reason why it must be performed for the calibration to succed.
A DIFFERENT THING is the normal discharging and charging process during normal use of the phone.
In this case, you should NEVER let your battery go under 20% and, what few people know, it also should never go over 95%. This stresses the battery and diminish its life time.
Also, and there's a lot of doubts about this, the lower the charging voltage, the slower the charging process, but the longer the battery life.
High charging voltages (like the one used by the charger sold with the phone, which is around 5V) stress the battery, diminishing considerably its life time.
That is true for all lithium-ion batteries!
Therefore it is better to charge your phone through USB (which uses around 4,3V) than to do it using the charger provided with the phone.
You may be asking "If the charging voltage of the charger provided by the manufacturer stresses the battery, why does the manufacturer provide such charger?"
For purely commercial reasons! Higher voltages mean shorter charging cycles, which please the consummer. Moreover, the battery capacity loss with the factory provided charger is around 15-20% a year (considering "normal" to "heavy" use). That is to say that after a year your battery will only reach 80-85% of the maximum charge it used to reach when it was new. And by that time your manufacturer expects you to consider buying a new phone, with more features.
Summing it up:
- calibration is just the process by which you "tell" your phone what the real specs of your battery;
- in normal use, charging your phone through USB is better than doing it with the manufacturer provided charger;
- try not to let your battery charge go under 20% nor above 95%;
- if you're interested, read more about it at batteryuniversity.com

Spin three times in clockwise direction with left middle finger on your nose while blinking your eyes with the phone plugged in.
Jump in the air 3 times.
Unplug phone.

Thats some messed up instructions.
Do you have any idea what kind of strain you're putting on the battery while doing all that?
All you're gonna get is some extra minutes, maybe an hour but is it really worth it because you're just reducing overall battery lifespan by doing that procedure over and over.
Specially when you constantly keep the battery at 4200mV (full charge) for a long time. You're practically killing it by overcharging.
Transmitted from a Galaxy far far away via XDA telepathy.

m2smoe said:
Spin three times in clockwise direction with left middle finger on your nose while blinking your eyes with the phone plugged in.
Jump in the air 3 times.
Unplug phone.
Click to expand...
Click to collapse
that made me chuckle

Never done a calibration on a battery and most of the time i even didn't let battery to discarge very much and then load it again. Never had a problem with battery life it last how long it should last every time and i've used that battery for years. So the battery "calibration" are kinda useless.

Matriak31 said:
that made me chuckle
Click to expand...
Click to collapse
Well then, my job here is done

m2smoe said:
Well then, my job here is done
Click to expand...
Click to collapse
it is indeed...i should follow you just to have more laughs like that cheers

RenatoN said:
Although this thread is about battery calibration, these questions about battery charging always pop up.
Battery calibration is the process by which you set your device with your battery data.
Every single battery is slightly different. Although there are minimum stantards to every spec of the battery, each battery is different.
Calibrating your battery is nothing more than setting your phone to the real specs of your own battery (since the phone comes configured with the battery factory standards). For example, your phone may be set to use a battery which maximum charge is 1650 mAh, but your battery has a maximum charge of 1625 mAh. That may be within the acceptable factory standard, meaning you have a normal battery, but that also means that your phone will never indicate a 100% charge after you unplug the charger.
If you calibrate that hypothetical battery, you will "tell" your phone that its maximum charge capacity is actually 1625 mAh, meaning from that on your phone's battery indicator will be more accurate.
For that reason, it is necessary to fully discharge and fully recharge your battery for the calibration process, since your device must read the actual specs (minimum charge, maximum charge, charging current, etc) of the installed battery.
I don't know about how many times this full cicle (discharging and recharging) must be performed, but that is the reason why it must be performed for the calibration to succed.
A DIFFERENT THING is the normal discharging and charging process during normal use of the phone.
In this case, you should NEVER let your battery go under 20% and, what few people know, it also should never go over 95%. This stresses the battery and diminish its life time.
Also, and there's a lot of doubts about this, the lower the charging voltage, the slower the charging process, but the longer the battery life.
High charging voltages (like the one used by the charger sold with the phone, which is around 5V) stress the battery, diminishing considerably its life time.
That is true for all lithium-ion batteries!
Therefore it is better to charge your phone through USB (which uses around 4,3V) than to do it using the charger provided with the phone.
You may be asking "If the charging voltage of the charger provided by the manufacturer stresses the battery, why does the manufacturer provide such charger?"
For purely commercial reasons! Higher voltages mean shorter charging cycles, which please the consummer. Moreover, the battery capacity loss with the factory provided charger is around 15-20% a year (considering "normal" to "heavy" use). That is to say that after a year your battery will only reach 80-85% of the maximum charge it used to reach when it was new. And by that time your manufacturer expects you to consider buying a new phone, with more features.
Summing it up:
- calibration is just the process by which you "tell" your phone what the real specs of your battery;
- in normal use, charging your phone through USB is better than doing it with the manufacturer provided charger;
- try not to let your battery charge go under 20% nor above 95%;
- if you're interested, read more about it at batteryuniversity.com
Click to expand...
Click to collapse
You should post the source for your info, cause I am seeing a lot of incorrect information in here.
If you guys want to learn about your battery, visit the site Battery University

The OEM replacement battery is worth about $10.
Save yourself the stress....use it...charge it when you need to...if the battery ever fails cough up $10.
Sent from my GT-I9100 using XDA App

The way I would calibrate my batteries is a bit different. Lithium ion batteries don't need to be drained then charged to full AFAIK, and I even remember reading somewhere that draining it is actually only for NiCad batteries. It used to be relevant when phones were using NiCad but not anymore.
Read: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
As such I have read that the universal way to 'calibrate' batteries is by charging to full, using for a couple of mins and charging again.
What I have been doing is:
1. Charge to full when phone is switched off (doesn't matter if it's from 0% or 99%).
2. Switch on the phone, use for 5 mins.
3. Switch off then charge until full.
4. Repeat step 2 once more
That's it! It seems pretty simple but it seems to have worked for me.

The way i do it is different. Firstly i have the battery calibration app from the market by Nema..then i fully charge my phone and when it says its fully charge i go into the app. There it gives me the instructions on how to calibrate...First i wait till i charge the phone without any interruptions. then click on the app and wait til the battery goes to 4200MV and then i press the calibrate button and then the app does it for me. Then i drain the battery again without any interuptions or breaks during that time and then charge it again once battery dies down and thats it.
there are so many ways being touted on the forums you really dont know which one to go for...but whatever works for each person then who are we to tell someone different just thought i share that

If my battery dies, or gets significally lower capacity after 1 or 2 years of usage, I'll just buy a new one if I plan to keep the phone longer.. Going through these rituals and painstakenly monitor my battery % so that it never goes below 20 % or above 95 % is just not worth it.. Doesn't increase the life THAT much anyway.. I use the phone until I hear the beep for low batt, and from there until I have a charger available.. Most of the time it's before it reaches 10 %, thats good enough for me.. Once in a while it might even go so far that it dies.. Then I charge it till it says 100 %.. Most of the times I plug it when going to bed, and let it charge over night.. This is normal usage and what the battery should be designed to handle, and so far it does..

>Zerolemon Proper Charging Instructions + Loss of Battery Power from Drop Fix!‹

When charging The ZeroLemon battery, you should always charge at the "Lowest Amperage" meaning Fast charge should "always" be turned OFF when charging any ZeroLemon batteries. Leaving the fast charge turned on will charge the battery faster, of course. However, it will "kill" the ZeroLemon battery over time, reducing it's charging life to a mere crappy timespan, and also reducing it's ability to distribute a charge for the device over the original intended time cycle. >This info is straight from ZeroLemon themselves. This is not just my opinion.<I have purchased many batteries from ZeroLemon, on my business account, and this is what they themselves, and their USA distributor instructed us to do for the absolute best performance of their battery.
Another thing to keep in mind is when charging the battery on the slow, non fast charge cycle. To always charge with the phone off. No, this isn't so the phone can charge the battery faster. It's so the battery will get the "Full Charge" it's intended to receive. What do I mean, you might ask? When charging the OEM factory battery, the software is programmed to look at the /data/system/batterystats.bin file to determine calculative information and statistical information about the battery itself. This information guides the system on where the battery is at its charge cycle along with various other related task.
Zerolemon clearly states: "Shut down, plug in the power supply and charge until full. (Preferably continuously charge overnight to ensure maximum power. Remember to not switch the phone on, until battery is fully charged.)"
So how do you know if this monster of a battery is fully charged? Well, there's a couple ways. You can look at the whitepapers or on the battery and get the full amperage/voltage cycle information, or you can simply use some simple math to determine what amount charge you're charging at and then determine the amount of hours it will take for a complete full charge.
Now, I can make this a little easy for you and help you out with this. If the battery is brand new, meaning it just literally arrived and you just opened it from the box. Charge for afull 12-18 hoursfor the first charge. Do this with the phone off. When you hit that time mark, you can turn the phone on for use. Now keep in mind I said 18-24 hours for the first charge. Since Zerolemon sends out the battery with some bit of a charge on it, it's impossible to get the exact amount of charge for sure. So when in doubt, charge it fully out. That means 18-24 hours. Yes, yes, that's one hell of a long charge. But let me tell you. I use my phone all day. Full screen brightness, everything turned on, Bluetooth, Wi-Fi, etc. Watch videos, games, hit the forums, obviously . And I always get 3 to 4 days of use. That's right baby. 3 to 4 days of use. The secret is the long slow charge. These batteries are not single cell, they are a tricell makeup. The slower and longer the charge, the longer the battery will last.
Now back to the charging cyle info. You've already charged the phone up completely for the first time. Now use that sucka! And I mean use it till it completely gets to 5% and the system forces you that crappy power save mode where it dims the display etc. Power the phone off. Remove just enough of the rubber TPU case to lift up the battery from the contacts. Count to 3, then replace the battery, TPU, etc. Don't be shocked when you power it back on and you've got 80% full battery again. Remember this is a tricell, so it doesn't report correctly what the exact amperage/voltage is to the android system. Now continue to use the battery and repeat until the battery is at 5% all the time when reinserting it again.
Now, the step above is where everyone messes up and just depletes the battery to 5% only "one time" and then goes to charge the battery again. Don't do it! You're cheating yourself out of precious battery life.Follow the above cycle exactly as I said and you'll be thanking me later, that I promise. If you've already had the battery for a while and been charging it incorrectly, don't worry. Deplete the battery as outlined above, then charge for 18-24 hours, remove battery, insert battery, repeat till stays continually at 5% then recharge.
OK. Now let's move on. Once you continually hit that 5%, Start the charge cycle over again by charging the phone with Fast Charge turned OFF, the full 18-24 hours. Then repeat the steps outlined above again.
>>IT'S EXTREMELY IMPERATIVE THAT YOU DO THIS 5 CYCLES.<< (Sorry for the caps, but really need to stress the importance of this.)
Once you have completed the five cycles, you're on your way to always leaving that blasted charger at home, and never again being thought of as a "Wall Hugger" if you've seen the commercials .
=> Don’t stop charging even it shows 100% charged. And if you're seeing this 100%, then you didn't turn off the phone during the charge as indicated above, lol. A true "Full Charge" is only performed when the battery has been charged for 18-24 hours.
Charging Scenario
When you are doing the first "5 Full charge and Deplete cycles", the phone must be powered "off" while charging. This is due to the android operating system and the Note 4 thinking the phone is fully charged when it reaches 100% even though in reality it's truly not. The Zerolemon battery may only be in reality at 30%, 40%, 50%, etc. Remember, the device believes it has the OEM factory battery in it, and not the massive Zerolemon battery. Unfortunately if you're not rooted with a Developers Edition Note 4, it cannot differentiate between the two batteries. So for the first 5 full charges, (this is referred to as the conditioning of the battery,) turn the phone off when charging.
Now after the 5 cycles have been completed, and the conditioning has been done. You can charge the battery with the phone on. However its important to remember that:
1. When your little battery icon shows full, or if you have the battery % on, & it shows 100%, don't stop charging. It thinks you have the Factory OEM battery in place. To ensure that you have a "True Full Charge" the total noninterrupted charge time must be no shorter than 18 hours and no more than 24, if the battery is truly fully depleted.
2. Properly charging a battery of this size works as follows. The battery has been charged 18-24 hours and is fully charged. You use the device depleting the battery over a period of a few days, while in the process, when it hits 5% you remove the battery and then reinsert as mentioned earlier, then continue to use the device till the battery is actually fully depleted. This means the phone won't power on anymore.
Now at this point, you'd start the charging process again, for 18-24 hours.
Do not charge at every day or every night just because the battery is a little low. (Because almost devices are powerful hungry and batteries depletion is very quick, people are in a habit of just throwing it on charge whenever and however.) Only charge when the device is completely and fully powerless.
Routinely charging the Zerolemon battery in different increments will cause a severe and nonreversible battery retention that will prevent the battery from not only being able to give full use, but prevent it from being able to be fully charged anymore.
TIPS:
Zerolemon batteries for the Note 4 are notorious for prematurely shutting down the phone by means of loss of power if the phone is dropped or in some cases even bumped. The reason this occurs is because their is a small discrepancy in the exact battery size where the contacts meet the pins on the phone. In layman's terms, the Zerolemon battery is just a bit short. No, it's not gonna fall out of the back of the TPU case or anything like that. However, if you drop the phone, or even in some reported cases, bump the phone, the Zerolemons battery loses connection with the gold contacts from the device from within the battery compartment.
Reports have been made to Zerolemon concerning the issue, however Zerolemon has failed still yet, to resolve the problem accordingly. Most likely because just a simple change of plan, would literally open the door for thousands of recalls, refunds, etc, not to mention cost thousands of dollars to remap the sizing and make the correction to future batteries.
Well with this said, all is not lost. I've found, if you remove the TPU case, leaving the battery in place, you can insert a small shim of paper at the proper place, and this will totally resolve and eliminate the problem 100%.
You can use paper, plastic, Thin gasket material etc. Whichever is most convenient for you at the time.
The proper placing of the paper is crucial. Because you don't want to cover up the path to the speaker phone compartment any more than it already is.
Here's the easiest way to fix it.
Power off your phone. Now remove the TPU case and lay the phone carefully screen down so the battery compartment is facing upwards. Position the phone where the bottom of the battery compartment is closest to you, and the camera is furthest from you. Now remove the battery. On the bottom right side of the battery compartment you will want to insert your paper, plastic, "fix" etc to the bottom right side of the compartment. The paper thickness I'd recommend would be the thickness of a regular matchbook cover, or about 2 sheets of construction paper. The dimensions I used was about 1/8 inch tall, by 1 inch long. Don't lay the paper flat inside the battery compartment, doing so will cause the battery to be a little "thicker" and not make connection. You will want to "Stand Up" the little piece if paper, or if you're feeling savy enough, permanently afix the paper to the housing. Now when you go to reinsert your Zerolemons battery, you'll notice that it not only actually first a little tighter and snugger, like it should have been on day 1. But it also doesn't let the battery wiggle a little like before. Replace your TPU case, and power on your phone.
I'll upload some pics for you to show you how I did mine. If you got any questions on any of this, just ask.
Don't worry if you're a newby, a senior XDA member, or a Developer. You won't get any flaming or criticizing from me. Asking for help is always welcomed as far as I'm concerned.
The only dumb question is the question that's not asked.
Don't forget to hit the "Thanks Button!"

Your post was written on the same day that the Retail unlock was released, about maybe 6 hours earlier, and I'm just noticing this post this morning. First of all, I'm actually now on CM13. Secondly, I've disabled any automatic screen dimming at 5% and 15%. I still get warnings, which I do swipe away. My phone did reboot when it thought it got down to zero, only to find out that I was at 11%. I continued to drain again to 0%, tried to start up, no luck. It was drained. When I was fully charged, I did try deleting batterystats.bin as well, and apparently that did nothing. I'm about to try a mod for battery calibration. The difference between the time of your post and now, is that we're unlocked and rooted, so the mod would not have worked, then, but POSSIBLY, now. I guess I'll be a guinea pig, here.

JOSHSKORN said:
Your post was written on the same day that the Retail unlock was released, about maybe 6 hours earlier, and I'm just noticing this post this morning. First of all, I'm actually now on CM13. Secondly, I've disabled any automatic screen dimming at 5% and 15%. I still get warnings, which I do swipe away. My phone did reboot when it thought it got down to zero, only to find out that I was at 11%. I continued to drain again to 0%, tried to start up, no luck. It was drained. When I was fully charged, I did try deleting batterystats.bin as well, and apparently that did nothing. I'm about to try a mod for battery calibration. The difference between the time of your post and now, is that we're unlocked and rooted, so the mod would not have worked, then, but POSSIBLY, now. I guess I'll be a guinea pig, here.
Click to expand...
Click to collapse
Hey, I saw that you mentioned in the other thread about someone had posted a beta file. I believe that you are absolutely correct. I'll do my best to dig around and see if I can find that file for us to test. I have tried depleting my battery literally till 0% is true. At that point I checked the mv on the battery and then fully charged using no fast charge cycle and also without turning the device. I have 5 converted DE's and now 6 true DE's. I'm going to test each device at the same time to get an average and also a very accurate account on the validation of the battery stats. Lol at the guinea pig that you mentioned. I've felt that way too. I'll start testing the devices at the same time in the morning about 8:00 am here in Hawaii. I'll report back what my findings are. Post back your findings and I'll do the same. Hopefully we can modify the file properly to meet the requirements for us Zero Lemon users.

Android.Ninja said:
Hey, I saw that you mentioned in the other thread about someone had posted a beta file. I believe that you are absolutely correct. I'll do my best to dig around and see if I can find that file for us to test. I have tried depleting my battery literally till 0% is true. At that point I checked the mv on the battery and then fully charged using no fast charge cycle and also without turning the device. I have 5 converted DE's and now 6 true DE's. I'm going to test each device at the same time to get an average and also a very accurate account on the validation of the battery stats. Lol at the guinea pig that you mentioned. I've felt that way too. I'll start testing the devices at the same time in the morning about 8:00 am here in Hawaii. I'll report back what my findings are. Post back your findings and I'll do the same. Hopefully we can modify the file properly to meet the requirements for us Zero Lemon users.
Click to expand...
Click to collapse
I don't know if this is significant or not but the manual states the capacity at 3.85V/3850mV. The Battery Calibration app I tried this morning said my battery was about 4380mV at 100%. I don't think that this was correct on the app's part. I could be wrong. What do you think? BTW, I'm at 58% right now after 9 hours of heavy use, I don't think that's right.
Sent from my SM-N910V using Tapatalk

3850 from 4380, that is a good difference. What app did you use? I'll check using another app and we'll compare results. However also thinking about it, if I remember correctly, 3850mV should be correct. I was an original tester for ZeroLemon thats based out of china. They use BaxtelWireless as their Wholesaler / Distributor who is located in lower Texas, and I signed up as a tester / reviewer for them when they first started implementing the battery. BaxtelWireless contacted me later on to test out the battery. The only thing I really dislike, is the fact that it's a tri-cell battery and not single cell. if I remember correctly. They mentioned they were working on the possibility of making a single cell, however I'm positive the price would also increase of they do. After checking I think that 3850mV should be correct, but let me ask someone who works there to get a definite answer. I'll get back with you.
Sent from my SM-N910V using Tapatalk

I got the 3850 figure from the manual
Sent from my SM-N910V using Tapatalk
---------- Post added at 08:47 PM ---------- Previous post was at 08:45 PM ----------
Lookup Battery Calibration on the play store, it's by NeMa. That's what I used.
Sent from my SM-N910V using Tapatalk

@47%, 3924mV.
Sent from my SM-N910V using Tapatalk

Yup, that's what I'm seeing as well. 3850mV is what they say it should be.
Sent from my SM-N910V using Tapatalk

Have a look at this thread. This is the guy I was referring to that was trying to make a mod for this battery. I don't really understand what all he was doing but I don't think he's supported it in almost a year.
http://forum.xda-developers.com/not...nt/reserved-zerolemon-fuel-gauge-fix-t3131705

I feel like I've made some small progress, but honestly, I doubt it. Still seeing the 1% problem. I don't know if that will ever iron itself out or not.
First discharge:
my phone turned off at 0%
I turned it back on, it had 11% left over.
Both occasions, @1%, draining the battery seemed like an eternity.
Did not test battery pull
Tried using BatteryCalibration from the Play Store, it did nothing.
Second Discharge:
Battery drained down to 0% the first time through
Battery Pull did nothing. Turning off and on did nothing. Battery was in fact, dead.
Calibrated using Battery HD Pro. (I think you can do the same calibration with the free version but I'm not sure)
1% battery drain seemed like an eternity, again
I have my phone plugged in, now and I'm going to let it charge for about 21 hours before I turn it on, again. I'll check it when I get home from work in the evening.
Question: Would there be any difference in using the stock charger vs the charger that came with previous Note's with different voltages? I don't know enough about electricity to understand this or not.

thanks to OP for sharing!
i have an original samsung battery charger.
could i use it to charge my zerolemon 18-24hrs for those first 5 charges, while i use my phone with my old original 3220 mAh batteries in the meantime?

After the 5 cycles of 18-24 hrs of charging will I always charge this battery for 18hrs or more and do I always charge it with the fast charging off? After the 5 cycles will my note 4 % sign read true. Any help would be appreciated thanks.

Android.Ninja said:
When charging The ZeroLemon battery, you should always charge at the "Lowest Amperage" meaning Fast charge should "always" be turned OFF when charging any ZeroLemon batteries. Leaving the fast charge turned on will charge the battery faster, of course. However, it will "kill" the ZeroLemon battery over time, reducing it's charging life to a mere crappy timespan, and also reducing it's ability to distribute a charge for the device over the original intended time cycle. >This info is straight from ZeroLemon themselves. This is not just my opinion.<I have purchased many batteries from ZeroLemon, on my business account, and this is what they themselves, and their USA distributor instructed us to do for the absolute best performance of their battery.
Another thing to keep in mind is when charging the battery on the slow, non fast charge cycle. To always charge with the phone off. No, this isn't so the phone can charge the battery faster. It's so the battery will get the "Full Charge" it's intended to receive. What do I mean, you might ask? When charging the OEM factory battery, the software is programmed to look at the /data/system/batterystats.bin file to determine calculative information and statistical information about the battery itself. This information guides the system on where the battery is at its charge cycle along with various other related task.
Zerolemon clearly states: "Shut down, plug in the power supply and charge until full. (Preferably continuously charge overnight to ensure maximum power. Remember to not switch the phone on, until battery is fully charged.)"
So how do you know if this monster of a battery is fully charged? Well, there's a couple ways. You can look at the whitepapers or on the battery and get the full amperage/voltage cycle information, or you can simply use some simple math to determine what amount charge you're charging at and then determine the amount of hours it will take for a complete full charge.
Now, I can make this a little easy for you and help you out with this. If the battery is brand new, meaning it just literally arrived and you just opened it from the box. Charge for afull 12-18 hoursfor the first charge. Do this with the phone off. When you hit that time mark, you can turn the phone on for use. Now keep in mind I said 18-24 hours for the first charge. Since Zerolemon sends out the battery with some bit of a charge on it, it's impossible to get the exact amount of charge for sure. So when in doubt, charge it fully out. That means 18-24 hours. Yes, yes, that's one hell of a long charge. But let me tell you. I use my phone all day. Full screen brightness, everything turned on, Bluetooth, Wi-Fi, etc. Watch videos, games, hit the forums, obviously . And I always get 3 to 4 days of use. That's right baby. 3 to 4 days of use. The secret is the long slow charge. These batteries are not single cell, they are a tricell makeup. The slower and longer the charge, the longer the battery will last.
Now back to the charging cyle info. You've already charged the phone up completely for the first time. Now use that sucka! And I mean use it till it completely gets to 5% and the system forces you that crappy power save mode where it dims the display etc. Power the phone off. Remove just enough of the rubber TPU case to lift up the battery from the contacts. Count to 3, then replace the battery, TPU, etc. Don't be shocked when you power it back on and you've got 80% full battery again. Remember this is a tricell, so it doesn't report correctly what the exact amperage/voltage is to the android system. Now continue to use the battery and repeat until the battery is at 5% all the time when reinserting it again.
Now, the step above is where everyone messes up and just depletes the battery to 5% only "one time" and then goes to charge the battery again. Don't do it! You're cheating yourself out of precious battery life.Follow the above cycle exactly as I said and you'll be thanking me later, that I promise. If you've already had the battery for a while and been charging it incorrectly, don't worry. Deplete the battery as outlined above, then charge for 18-24 hours, remove battery, insert battery, repeat till stays continually at 5% then recharge.
OK. Now let's move on. Once you continually hit that 5%, Start the charge cycle over again by charging the phone with Fast Charge turned OFF, the full 18-24 hours. Then repeat the steps outlined above again.
>>IT'S EXTREMELY IMPERATIVE THAT YOU DO THIS 5 CYCLES.<< (Sorry for the caps, but really need to stress the importance of this.)
Once you have completed the five cycles, you're on your way to always leaving that blasted charger at home, and never again being thought of as a "Wall Hugger" if you've seen the commercials .
=> Don’t stop charging even it shows 100% charged. And if you're seeing this 100%, then you didn't turn off the phone during the charge as indicated above, lol. A true "Full Charge" is only performed when the battery has been charged for 18-24 hours.
Charging Scenario
When you are doing the first "5 Full charge and Deplete cycles", the phone must be powered "off" while charging. This is due to the android operating system and the Note 4 thinking the phone is fully charged when it reaches 100% even though in reality it's truly not. The Zerolemon battery may only be in reality at 30%, 40%, 50%, etc. Remember, the device believes it has the OEM factory battery in it, and not the massive Zerolemon battery. Unfortunately if you're not rooted with a Developers Edition Note 4, it cannot differentiate between the two batteries. So for the first 5 full charges, (this is referred to as the conditioning of the battery,) turn the phone off when charging.
Now after the 5 cycles have been completed, and the conditioning has been done. You can charge the battery with the phone on. However its important to remember that:
1. When your little battery icon shows full, or if you have the battery % on, & it shows 100%, don't stop charging. It thinks you have the Factory OEM battery in place. To ensure that you have a "True Full Charge" the total noninterrupted charge time must be no shorter than 18 hours and no more than 24, if the battery is truly fully depleted.
2. Properly charging a battery of this size works as follows. The battery has been charged 18-24 hours and is fully charged. You use the device depleting the battery over a period of a few days, while in the process, when it hits 5% you remove the battery and then reinsert as mentioned earlier, then continue to use the device till the battery is actually fully depleted. This means the phone won't power on anymore.
Now at this point, you'd start the charging process again, for 18-24 hours.
Do not charge at every day or every night just because the battery is a little low. (Because almost devices are powerful hungry and batteries depletion is very quick, people are in a habit of just throwing it on charge whenever and however.) Only charge when the device is completely and fully powerless.
Routinely charging the Zerolemon battery in different increments will cause a severe and nonreversible battery retention that will prevent the battery from not only being able to give full use, but prevent it from being able to be fully charged anymore.
TIPS:
Zerolemon batteries for the Note 4 are notorious for prematurely shutting down the phone by means of loss of power if the phone is dropped or in some cases even bumped. The reason this occurs is because their is a small discrepancy in the exact battery size where the contacts meet the pins on the phone. In layman's terms, the Zerolemon battery is just a bit short. No, it's not gonna fall out of the back of the TPU case or anything like that. However, if you drop the phone, or even in some reported cases, bump the phone, the Zerolemons battery loses connection with the gold contacts from the device from within the battery compartment.
Reports have been made to Zerolemon concerning the issue, however Zerolemon has failed still yet, to resolve the problem accordingly. Most likely because just a simple change of plan, would literally open the door for thousands of recalls, refunds, etc, not to mention cost thousands of dollars to remap the sizing and make the correction to future batteries.
Well with this said, all is not lost. I've found, if you remove the TPU case, leaving the battery in place, you can insert a small shim of paper at the proper place, and this will totally resolve and eliminate the problem 100%.
You can use paper, plastic, Thin gasket material etc. Whichever is most convenient for you at the time.
The proper placing of the paper is crucial. Because you don't want to cover up the path to the speaker phone compartment any more than it already is.
Here's the easiest way to fix it.
Power off your phone. Now remove the TPU case and lay the phone carefully screen down so the battery compartment is facing upwards. Position the phone where the bottom of the battery compartment is closest to you, and the camera is furthest from you. Now remove the battery. On the bottom right side of the battery compartment you will want to insert your paper, plastic, "fix" etc to the bottom right side of the compartment. The paper thickness I'd recommend would be the thickness of a regular matchbook cover, or about 2 sheets of construction paper. The dimensions I used was about 1/8 inch tall, by 1 inch long. Don't lay the paper flat inside the battery compartment, doing so will cause the battery to be a little "thicker" and not make connection. You will want to "Stand Up" the little piece if paper, or if you're feeling savy enough, permanently afix the paper to the housing. Now when you go to reinsert your Zerolemons battery, you'll notice that it not only actually first a little tighter and snugger, like it should have been on day 1. But it also doesn't let the battery wiggle a little like before. Replace your TPU case, and power on your phone.
I'll upload some pics for you to show you how I did mine. If you got any questions on any of this, just ask.
Don't worry if you're a newby, a senior XDA member, or a Developer. You won't get any flaming or criticizing from me. Asking for help is always welcomed as far as I'm concerned.
The only dumb question is the question that's not asked.
Don't forget to hit the "Thanks Button!"
Click to expand...
Click to collapse
18-24 hrs??? seriously???
---------- Post added at 06:50 AM ---------- Previous post was at 06:47 AM ----------
IssacEsco said:
After the 5 cycles of 18-24 hrs of charging will I always charge this battery for 18hrs or more and do I always charge it with the fast charging off? After the 5 cycles will my note 4 % sign read true. Any help would be appreciated thanks.
Click to expand...
Click to collapse
Definitely don't use the Samsung Adaptive Fast Charging adapter if you turn off the phone. Find another charger that is 2.0, otherwise, even if you have fast charging off in the settings...it will fast charge when the phone is charging when it's off and it will say it when you see the charging going on. Read that somewhere else on this forum and he was absolutely correct!

Correct me if I'm wrong here, but if your phone believes the battery is at 100% doesn't it stop charging the battery and only draws a trickle charge? what good is leaving your phone plugged in when your phone itself will not charge it fully? there must be a way we can physically charge the battery itself. I'm about to take apart an old charger and alligator it into a regulated power supply. someone stop me if they think that's a bad idea.

How can you turn off your phone and not use it for 12hr+? kind of ridiculous if your cell phone is your main source of contact.....

Hi, I've had my Zerolemon 10000 mAh Battery & case for just over a year. Using it in a Note 4. Not being tech savvy I initially charged it to 100%. and I have done the plug it in every night thing & had it on fast charge. Now, I have a question, since I have done all these things wrong on this battery the battery is running out of charge within 3 to 4 hours at least. Can I reprogram this battery or have I ruined it?

Beckyboombang. said:
Hi, I've had my Zerolemon 10000 mAh Battery & case for just over a year. Using it in a Note 4. Not being tech savvy I initially charged it to 100%. and I have done the plug it in every night thing & had it on fast charge. Now, I have a question, since I have done all these things wrong on this battery the battery is running out of charge within 3 to 4 hours at least. Can I reprogram this battery or have I ruined it?
Click to expand...
Click to collapse
I would also like to know

Charging advice

Hello, so I just got a new Moto X style about a month ago, I need your advice from something, should I charge my phone at 30-40%? if yes then will it have long term damage/worn out my phone?
Thank you

The golden rules are
Don't ever go below 10%
The battery is happiest (most chemically stable) around 40%
Try to spend as little time above 90% as practically possible, especially when charging/using the device. This means never leaving the device plugged overnight
Avoid heat i.e., Do not overtax the phone in an environment like a small, hot room; Avoid simultaneous charging/GPS in the car with the phone in direct sunlight
To combine the last two items, especially avoid high temperatures at higher battery levels. This will degrade the battery very quickly
I've also read stuff about the discharge depth. Something to the tune of discharging the battery from 80% to 60% before charging is better than discharging from 80% to 40% before charging. I've never paid that much attention, because nobody wants to charge their phone 3 times a day, but apparently topping up is better than charging from near empty.
I've had my Pure for a little more than 6 months now. I have been consistently plugging in when my battery hits 30%. My battery life is as good as it has always been.

QuantumFluxx said:
The golden rules are
Don't ever go below 10%
The battery is happiest (most chemically stable) around 40%
Try to spend as little time above 90% as practically possible, especially when charging/using the device. This means never leaving the device plugged overnight
Avoid heat i.e., Do not overtax the phone in an environment like a small, hot room; Avoid simultaneous charging/GPS in the car with the phone in direct sunlight
To combine the last two items, especially avoid high temperatures at higher battery levels. This will degrade the battery very quickly
I've also read stuff about the discharge depth. Something to the tune of discharging the battery from 80% to 60% before charging is better than discharging from 80% to 40% before charging. I've never paid that much attention, because nobody wants to charge their phone 3 times a day, but apparently topping up is better than charging from near empty.
I've had my Pure for a little more than 6 months now. I have been consistently plugging in when my battery hits 30%. My battery life is as good as it has always been.
Click to expand...
Click to collapse
IMO charging overnight dont do anything to the battery, phone stops charging at 100% and start to use energy from the charger, but im with you with the 10%.

I think all these "rules" are all just bunk and superstition... If you make it through the day, plug it in overnight, and start again in the morning, if not when the battery is low, charge it when it is convenient, don't be scared of "overcharging" as that isn't really possible anymore with electronics in batteries and devices. The device is meant to be used, not babied.

These lion lipm battery do not actually ever charge to their full capacity. This is by design so 100 % is really around 80 in reality and 0 is around 8 to 10%. Again this is by design the chipset monitors the battery temperature and charge load as well as discharge load and compensates for heat and load. All this crap about charging at different rates and in different situations is bunk written by people that don't realize battery design is constantly changing. And since quick charge 1 things have changed a ton.

RK2116 said:
IMO charging overnight dont do anything to the battery, phone stops charging at 100% and start to use energy from the charger, but im with you with the 10%.
Click to expand...
Click to collapse
Sooo does this mean I can charge my phone over night using the Turbo charger 25W that comes with the phone?

acejavelin said:
I think all these "rules" are all just bunk and superstition... If you make it through the day, plug it in overnight, and start again in the morning, if not when the battery is low, charge it when it is convenient, don't be scared of "overcharging" as that isn't really possible anymore with electronics in batteries and devices. The device is meant to be used, not babied.
Click to expand...
Click to collapse
So does this mean i can charge it over night with the turbo charger?

HerySean said:
So does this mean i can charge it over night with the turbo charger?
Click to expand...
Click to collapse
Yes

acejavelin said:
Yes
Click to expand...
Click to collapse
+1
---------- Post added at 06:55 PM ---------- Previous post was at 06:54 PM ----------
HerySean said:
Sooo does this mean I can charge my phone over night using the Turbo charger 25W that comes with the phone?
Click to expand...
Click to collapse
Yes.

I won't argue with anyone here, but I would advise all of you to research lithium ion battery technology. The OP asked how to prevent long term damage to his battery. My friend and I bought our Pure's at the same time. I charge the way that I indicated, he leaves his phone plugged in all night, every night. We're both on Verizon, and I've noticed that his battery drains much more quickly than mine does.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Take care, all.

QuantumFluxx said:
I won't argue with anyone here, but I would advise all of you to research lithium ion battery technology. The OP asked how to prevent long term damage to his battery. My friend and I bought our Pure's at the same time. I charge the way that I indicated, he leaves his phone plugged in all night, every night. We're both on Verizon, and I've noticed that his battery drains much more quickly than mine does.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Take care, all.
Click to expand...
Click to collapse
Have you verified that he is running exactly the same apps as you with exactly the same service throughout the day. If not then your supposing that charging is the issue is simply a guess. The only way to determine exactly would be a to set them up exactly the same and run them exactly the same in exactly the same conditions for a week or more and log the battery life..

autosurgeon said:
Have you verified that he is running exactly the same apps as you with exactly the same service throughout the day. If not then your supposing that charging is the issue is simply a guess. The only way to determine exactly would be a to set them up exactly the same and run them exactly the same in exactly the same conditions for a week or more and log the battery life..
Click to expand...
Click to collapse
I run more than he does. He is older, and does not use social media. I use FB/Messenger, Snapchat, Twitter, and Instagram with push notifications enabled. Our standby battery drains are very different from 100%. His device hits 90 while mine is reading 94. The devices are physically next to one another. I only know this because he's at my house every weekend. He always plugs my phone in when he plugs in his even though I've told him not to a hundred times. There are probably other factors involved, but I always attributed the difference to him constantly leaving his phone plugged in for hours on end.

Have you looked at his screen timeout? Screen brightness. Or checked to see if he has a misbehaving app? Does he have wifi at his house ? Or is his doing all it's updates at your place? See there are tons of variables that have nothing to do with charging that are simply more likely to be causing the issue you are noticing

autosurgeon said:
Have you looked at his screen timeout? Screen brightness. Or checked to see if he has a misbehaving app? Does he have wifi at his house ? Or is his doing all it's updates at your place? See there are tons of variables that have nothing to do with charging that are simply more likely to be causing the issue you are noticing
Click to expand...
Click to collapse
I mean, I wouldn't describe what I'm observing as an 'issue'. I understand where you're coming from though. I have gone to war against errant battery drains in the past. Lollipop/Marshmallow's mobile radio drain is something I surely won't miss. He does have Wifi at his house for app updates and such.
Just for the clarity's sake, we're talking about:
2 identical devices, running the same version of Android and the same ROM, which are connected to the same mobile and wifi networks, in the same physical location - so service quality is not a variable, unless there is a hardware issue. Both devices are [simultaneously] charged to 100%, and then they are unplugged and their screens remain off. Upon checking both devices a little while later, mine is at 94% while his is at 90%. My device is encrypted, rooted, has custom kernel settings relating to the governor, read ahead, and entropy, and runs various GCM social/messaging apps, and has an extensive Tasker setup. His device is untouched. Both devices have been fully drained and recharged at least once in the past 60 days.
I have looked at his battery usage, which I log with 3C Toolbox. There is no excessive drain from any apps, the cell radio, the kernel, etc...
Regardless of what is causing it, the observable evidence is curious.

QuantumFluxx said:
I won't argue with anyone here, but I would advise all of you to research lithium ion battery technology. The OP asked how to prevent long term damage to his battery. My friend and I bought our Pure's at the same time. I charge the way that I indicated, he leaves his phone plugged in all night, every night. We're both on Verizon, and I've noticed that his battery drains much more quickly than mine does.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Take care, all.
Click to expand...
Click to collapse
Not saying you are wrong, but the scenario you give is at best circumstantial with the given info. It does not account for other factors such as apps installed, network connectivity, how the phone is being used, etc.

Screen brightness can drastically change how long until you have to recharge. Mine is usually only 1/4 of the way up.

Database Users

welcome