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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..
I have read some phones getting very hot during some game and programs. My case is somewhat different. Charged my phone fully when i was going to bed. I heard battery full notification and unplugged it. After 6 hours or so sleep I saw the battery almost depleted and phone very very hot. I use green power and my batteries were behaving quite well. Battery information was showing that friendcaster was using %48 whereas it should generally be AOS. I think something is wrong with batterystats too, because I popped out the battery and reinserted, put it on charge but it still shows 6 hours and more battery use. I remember that every time I restart charging the on time would fall to zero. During the last week I've been using 1900 mah Anker batteries charged on their charger. This one is the original battery. I charged it on the charger, but put some more juice when it fell to %90, but on the phone this time. This is when I heard battery full notification. Now it is on charge, but the on time is stuck to 6h 32m 42s. How do I reset it? And what can be the reason of this strange behavior?
If you have used an iffy 3rd party battery you may have roasted the chip on the SGS2's mobo that monitors the battery.
The way to clean the SGS2's battery history is to:
Charge to 100%
Discharge till the phone turns itself off
Charge to 100% in one sitting.
If its still not playing ball, then your best bet is to put it back to stock (if you have rooted/installed newer stock or custom roms via odin) use a USB jig to reset the flash counter, and take it in (just take it in with the original battery, don't say anything about the 3rd party one.)
Thanx for the reply, but I replaced samsung battery with anker %100 charged and battery time fell to zero. Working as it should be and the phone is cooled.
Sent from my GT-I9100 using xda premium
Please discuss everything related to battery or charging in this thread
Great! So I got myself thinking about the dock charging situation: Why is it so that the dock charges the pad instead of the pad drains the dock?
In my opinion it is better (or more logical) that the pad sees the dock as rendundary battery and drains it at need. F.e. the pad runs till 50% then drains the dock completely dry and then uses the rest of its 50%.
Btw: I wonder if the dock charging logic is realized with hardware or software by Asus...
UncleManuel said:
Great! So I got myself thinking about the dock charging situation: Why is it so that the dock charges the pad instead of the pad drains the dock?
In my opinion it is better (or more logical) that the pad sees the dock as rendundary battery and drains it at need. F.e. the pad runs till 50% then drains the dock completely dry and then uses the rest of its 50%.
Click to expand...
Click to collapse
Um, at the end of either scenario, aren't you left with the same overall usage time and 2 dead batteries?
And isn't your preferred scenario almost exactly what happens in real world use?
what widgets drain battery?
i know widgets like weather, email, news drain battery because they need to update, use internet connection, so i don't use them to save battery.
but what about "offline" widgets like google play music, clock,... do they drain battery too? they don't update information using internet, but they do update "offlinely" - i mean, for example: google play music, now it shows the song "A", then you open the app and skip to song "B", when you go back to homescreen the widget will show song "B". so it has to update, does this drain the battery?
lol i guess i worry about battery too much, and just figured out that i created the thread "should i use battery saver app", i should have post it in this thread, sorry
and does leaving the charger plugged in to the wall outlet when not charging the tablet harm the charger or waste electricity?
nooktablet said:
and does leaving the charger plugged in to the wall outlet when not charging the tablet harm the charger or waste electricity?
Click to expand...
Click to collapse
CHARGING/DISCHARGING TIP:
LET THE DEVICE (THIS GOES FOR ANYTHING WITH A RECHARGABLE BATTERY) FULLY CHARGE.
UNPLUG, THEN LET IT FULLY DISCHARGE...ALL THE WAY!-- JUST LET IT DIE WHERE IT WONT TURN ON.
Doing this will increase battery time, decrease battery wear/tear, possible damage done by overcharging.
Do this on a regular basis, and youll start to see it will last longer then 10hrs
Because of this, i run alot of widgets, on performance mode, i have around an extra 30MIN, so 10hrs 30min is my batterys life.
*leaving the device plugged in,charging when its full, is bad!
*using the device, while charging, burns up the battery, youll notice it getting hot.
Picked this tablet up the other day. I noticed that when I took it in the car and plugged it's charging cable into my car usb charger (kengsington powerbolt) that it did not show that it was charging. Is this common? The charge has worked for all the phones I've plugged into it.
CyberdyneSystems said:
CHARGING/DISCHARGING TIP:
LET THE DEVICE (THIS GOES FOR ANYTHING WITH A RECHARGABLE BATTERY) FULLY CHARGE.
UNPLUG, THEN LET IT FULLY DISCHARGE...ALL THE WAY!-- JUST LET IT DIE WHERE IT WONT TURN ON.
Doing this will increase battery time, decrease battery wear/tear, possible damage done by overcharging.
Do this on a regular basis, and youll start to see it will last longer then 10hrs
Because of this, i run alot of widgets, on performance mode, i have around an extra 30MIN, so 10hrs 30min is my batterys life.
*leaving the device plugged in,charging when its full, is bad!
*using the device, while charging, burns up the battery, youll notice it getting hot.
Click to expand...
Click to collapse
I believe you are mostly right, but letting the battery constantly drain and recharging from 0-10% makes it work really hard and it makes in turn the life of the battery less. But in terms of life we are talking about a couple of mins less every half a year or so, since these devices get replaced by new ones every 1-2 years I guess it is ok.
If you want to sustain the most battery life just charge it from time to time when it gets lower than 40%. If you are having problems with battery duration, charge to 100% let it discharge completely then charge again until 100% without interruption. I do the full discharge and charge every month or so.
CyberdyneSystems said:
CHARGING/DISCHARGING TIP:
LET THE DEVICE (THIS GOES FOR ANYTHING WITH A RECHARGABLE BATTERY) FULLY CHARGE.
UNPLUG, THEN LET IT FULLY DISCHARGE...ALL THE WAY!-- JUST LET IT DIE WHERE IT WONT TURN ON.
Doing this will increase battery time, decrease battery wear/tear, possible damage done by overcharging.
Do this on a regular basis, and youll start to see it will last longer then 10hrs
Because of this, i run alot of widgets, on performance mode, i have around an extra 30MIN, so 10hrs 30min is my batterys life.
*leaving the device plugged in,charging when its full, is bad!
*using the device, while charging, burns up the battery, youll notice it getting hot.
Click to expand...
Click to collapse
i heard many people say letting it fully discharge (use until it turns off) and charge back to 100% will harm the battery, (or battery's lifespan). i read many guides online and all of them say this. i asked other people in other forums and they said the same thing.
but i guess you're right that it will improve battery life, in about a half year or a year (depending on how often you charge), then the battery won't be able to hold a long charge anymore. it won't be a problem it you plan to change/upgrade your device next year anyway.
The best battery tips that I use
Remove unnecessary widgets
Use a clean rom
Set your CPU to ondemand and put it on lowest frequency
Turn of wifi when you are not using your device
If you don't need your device for longer than an hour, turn it off
I use it for about an hour during the mornings up until dinner, then it gets a workout and I have never had my tablet die on me, or a need to rush for a charger.
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Click to expand...
Click to collapse
this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
Click to expand...
Click to collapse
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Click to expand...
Click to collapse
NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Click to expand...
Click to collapse
Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
Click to expand...
Click to collapse
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.
junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
Click to expand...
Click to collapse
No, I do not have a QI charger. I was always using a USB wall charger.
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