Database Users

How long does your G1 last with 2% battery?

I've been slowly draining my G1 since yesterday, with wifi on and auto-check email every 10 minutes. It lasted almost 24hrs before 2%.
I noticed it slowly went to 2% around 12pm today and at around 5:30pm, it finally shutdown. That's almost 6 hours using the last 2% of battery. I did check battery status a few times and also checked websites/market for a few minutes during the last 2%.
Is this odd? Should I wipe my battery stats? It doesn't seem calibrated to me.

Does it happen often that it hangs at 2%, if so wipe the stats and drain and shut off and recharge. Could just be the new battery breaking in.

aceo07 said:
I've been slowly draining my G1 since yesterday, with wifi on and auto-check email every 10 minutes. It lasted almost 24hrs before 2%.
I noticed it slowly went to 2% around 12pm today and at around 5:30pm, it finally shutdown. That's almost 6 hours using the last 2% of battery. I did check battery status a few times and also checked websites/market for a few minutes during the last 2%.
Is this odd? Should I wipe my battery stats? It doesn't seem calibrated to me.
Click to expand...
Click to collapse
When you wipe stats you should let the battery die out then fully charge to 100. You should be happy you get so much time out of 2% though

Actually this has happened to me, it seems that once the phone enters the 5% range, it lasts just as long as everything else put together.

i wish i were that lucky to claim any of these things. My phone under very very moderate usage lasts about 2-3 hours from fully charged. It has been like this for a while and the ROM i'm running now is just making it worse. if i dont touch and send a couple texts messages it'll last up to 4 hours but that's it. I'm going to reset the stats and see if that corrects it before i go and buy a new battery.

bdveteran18 said:
i wish i were that lucky to claim any of these things. My phone under very very moderate usage lasts about 2-3 hours from fully charged. It has been like this for a while and the ROM i'm running now is just making it worse. if i dont touch and send a couple texts messages it'll last up to 4 hours but that's it. I'm going to reset the stats and see if that corrects it before i go and buy a new battery.
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Click to collapse
Which is weird because using the stock battery I can get 12+ hours with moderate usage, this includes browser and wireless tethering.

I've been recharging it for a few hours now. The phone is off. It'll charge for another 10 hours before I turn it on.
Should I have wiped battery stats before I started charging? Or can I just wipe it before I boot up Android?

aceo07 said:
I've been recharging it for a few hours now. The phone is off. It'll charge for another 10 hours before I turn it on.
Should I have wiped battery stats before I started charging? Or can I just wipe it before I boot up Android?
Click to expand...
Click to collapse
I guess wiping them at full power wont hurt, but then you must then let it fully die again and recharge it fully.

I just unplugged it from the charger. Booted into recovery, wiped battery stats, then rebooted. It now says it's at 87%. Somehow it took 13% to do those 2 things.

Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.

AroundTheWorld said:
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
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Click to collapse
How do you overcharge it? Shouldn't it stop when it think it's full?
This morning I used 'battery info' in the settings area and it only said the voltage was 4.05v or something and at 91%. This was for at least 9hrs with phone off and using HTC usb charger. I plugged it back in, while the phone was on, and it charged to 'full' in 10 minutes.
I'm recharging with phone on now tonight. I'm also currently using my motorola razr usb charger. It seems to charge faster than the HTC usb charger. It's voltage is now 4.15v and 61% now.

AroundTheWorld said:
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
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Click to collapse
How do you overcharge a battery? If you mean leaving it plugged in long after it's fully charged, that is such a common thing to do it seems like lots of people would have battery problems. Almost everyone I know plugs their phone in before bed, and unplugs it in the morning. Most phones are fully charged in under 4 hours, so that leaves roughly 4-5 hours of being plugged while already fully charged every single day.

Well I'm basing that claim off of a t-mobile rep (hahah reliable isnt it?) who told me that overcharging the battery, or keeping it plugged for the majority of the day (which is what i tended to do) could harm the battery, causing it to give off false percentages or making it unable to hold a charge.
And also, from personal experience, my battery did begin to bulge outwards, and would not hold a charge for more than 4 hours. So I just assumed it was because I had a tendency to plug my g1 in when it wasn't necessary, and keep it charging. So perhaps my previous claim wasn't so well supported. I just based it off of my experience and what the reps told me.

aceo07 said:
I just unplugged it from the charger. Booted into recovery, wiped battery stats, then rebooted. It now says it's at 87%. Somehow it took 13% to do those 2 things.
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lol haha that sucks
since i download a font pack, keyboard skin and better keyboard once my battery hits 10% it usually dies within 5-7 minutes if i have swift running in the background
but before the most recent updates my battery would last about a hour or more with just swift updating in the background and the music player on pause

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.
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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..

General Battery Bug Observation Nexus S

I've noticed if I have the phone partially charged, lets say 50%
I reboot with the phone still connected to the charger, it will jump the charge percentage reported to 70% or so.
This can explain why the phone doesn't charge completely and why people experience shorter run times.
Has anyone observed this?
I've seen this happen from Gingerbread, to ICS. Nexus S 9020T

Actually yes, I've seen this too. I put it down to the handset recharging when it was rebooting...
Sent from my Nexus S using XDA

Same thing has happened to me with AOKP roms. It doesn't seem to throw my battery stats out of whack, but I've still made a habit out of unplugging the phone prior to rebooting.

I hope to bring attention to this because I've seen the bug since gingerbread but no one has reported it
Perhaps a talented developer can take this cause up and look into the issue.

It is more a shortcoming of the method used to find the state of charge. Our phones initial finding can be quite far off (after a reboot with varying conditions, for example), however as time goes on and the phone is on it will get closer and closer to the real state of charge. This is done by the battery to my knowledge, not android.
I've mentioned this a couple times, check the battery benchmark thread.

The simple answer is the phone charges much much quicker when off. The mere minute while the phone is shutting down and booting and time all hardware components are off line is enough to bring the 20% battery load. Lithium batteries charge the quickest from mid point to about 80% or 35% to 80%.
If you want to do a test discharge the battery to about 20% and turn the phone off and leave it on AC charge for 15-20 minutes. A good battery should be charged to about 80-85%. Try doing this while the phone is on and it will take at least an hour.

How and when do you charge your battery?

Do you let your battery drop down to 5% before connecting the charger? Or do you charge every moment you get the chance to keep battery at max?
Sent from my SM-G935F using Tapatalk

Battery łasts a long time as it usually goes off the charger at 7 a.m. I charge it while sleeping. Occasionally out of habit I will charge it while I'm driving in the car but for about 15 minutes. Otherwise, I am very happy with the battery.
Sent from my SM-G935V using Tapatalk

markwebb said:
Battery my a long time as it usually goes off the charger at 7 a.m. I charge it while sleeping. Occasionally out of habit I will charge it while I'm driving in the car but for about 15 minutes. Otherwise, I am very happy with the battery.
Sent from my SM-G935V using Tapatalk
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Click to collapse
I'm not an expert, but all I've heard is charging over night or after it hits 100% is bad. Why I don't know, but I try to charge my phone when it reaches everywhere from 15-30 to 95-100 then remove the charger.
Sent from my SM-G935F using Tapatalk

I'm not constantly on my phone, so usually charge it up to 80% and recharge when it drops to 40%. I only charge it to 100% when I am out and about for the whole day. See the following link for charging advice:
http://www.pcadvisor.co.uk/how-to/mobile-phone/how-charge-phones-battery-3619623/

Namyep said:
I'm not an expert, but all I've heard is charging over night or after it hits 100% is bad. Why I don't know, but I try to charge my phone when it reaches everywhere from 15-30 to 95-100 then remove the charger.
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
Overcharging won't happen on a advanced device like the S7.
Sent from my SM-G935F using Tapatalk

Namyep said:
I'm not an expert, but all I've heard is charging over night or after it hits 100% is bad. Why I don't know, but I try to charge my phone when it reaches everywhere from 15-30 to 95-100 then remove the charger.
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
Nah, that's old news. Modern chargers and devices know when they've hit 100%, so they stop charging at that point and lets the battery dip down to 98-99% before trickle charging up to 100 again, and so on until you unplug. It's completely safe, and you shouldn't trust all those garbage click-bait articles out there. Do not, however, go down to 0% before you recharge it. That can actually damage the cells in your battery, so plug it into the charger before that. If you notice some funky behavior from the battery, like if it's jumping from 30% to 20% in five minutes, or is stuck at 10% for an hour, then it's a good idea to completely drain it to 0% to calibrate the battery since the OS has no idea how much battery is left (so it knows where 0 is again). This will usually happen after flashing a different ROM. Charge it up to 100 again and it should be back to normal.
I personally charge it normally at night, without quick charge, since there's no point in having it quick charge while I'm a sleep for around 8 hours. I'll only quick charge it in the middle of the day, which is almost never, since the battery is freakin' awesome.
Don't worry about the battery too much, but don't reach 0% too often, and you'll be good. By too often, I mean every 3-4 months or so is OK. I base these things from my Sony device which I've had for almost 3 years. The (sealed in) battery was very good out-of-the-box, and it's still very good after nearly three years, so I won't mess with a proven success.

To be safe on the longevity of the battery I use one of these with my wireless charger :
http://www.amazon.com/gp/aw/d/B003P...mer+outlet&dpPl=1&dpID=31OAEbif0lL&ref=plSrch
My battery is usually around 30-40% at the end of the day. I use the regular speed Samsung Charging Pad and set the timer on this outlet for 3 hours when I go to bed. So after 3 hours it stops charging and I don't have to worry about the possibility of damaging the battery (I know about trickle charging, but I think this is better)

Ive read somewhere that the new s7 edge charger doesnt have a power inverter so it keeps charging and wasting power which could damage the charger or possibly device. So know if thats correct.

eric150 said:
To be safe on the longevity of the battery I use one of these with my wireless charger :
http://www.amazon.com/gp/aw/d/B003P...mer+outlet&dpPl=1&dpID=31OAEbif0lL&ref=plSrch
My battery is usually around 30-40% at the end of the day. I use the regular speed Samsung Charging Pad and set the timer on this outlet for 3 hours when I go to bed. So after 3 hours it stops charging and I don't have to worry about the possibility of damaging the battery (I know about trickle charging, but I think this is better)
Click to expand...
Click to collapse
I just purchased one of those...thanks for the advice. I charge my device when get around 20%-30% of battery and left charging over night ( when sleeping) on my standard Samsung wireless charging. My battery is just ok.. I'm not so heavy user and sometimes I have to charge around 8pm or so. I take off from the charger at 100% all morning around 8am.
Sent from my Galaxy S7 edge

At home. I do wireless when ever i can. If im not using the phone then i sit it on a wireless charger.
Battery hasnt drop pass 30% in the week i had the phone.
My note edge would drop pretty low because i didnt use wireless charging. So my phone would just sit in my pocket slowly draining.

ssgunner20 said:
Ive read somewhere that the new s7 edge charger doesnt have a power inverter so it keeps charging and wasting power which could damage the charger or possibly device. So know if thats correct.
Click to expand...
Click to collapse
Whatever you read, either you misunderstood, or the person that typed it was a bumbling idiot. A power inverter converts DC power to AC. Your source/utility power is already AC. A USB charger is merely an AC adapter made for USB. The phone has integrated circuitry that controls when and when not to charge the battery and at what amperage.

I usually let mine get to around 5% everytime. Then charge it back fully to 100%.

J.Biden said:
Nah, that's old news. Modern chargers and devices know when they've hit 100%, so they stop charging at that point and lets the battery dip down to 98-99% before trickle charging up to 100 again, and so on until you unplug. It's completely safe, and you shouldn't trust all those garbage click-bait articles out there. Do not, however, go down to 0% before you recharge it. That can actually damage the cells in your battery, so plug it into the charger before that. If you notice some funky behavior from the battery, like if it's jumping from 30% to 20% in five minutes, or is stuck at 10% for an hour, then it's a good idea to completely drain it to 0% to calibrate the battery since the OS has no idea how much battery is left (so it knows where 0 is again). This will usually happen after flashing a different ROM. Charge it up to 100 again and it should be back to normal.
I personally charge it normally at night, without quick charge, since there's no point in having it quick charge while I'm a sleep for around 8 hours. I'll only quick charge it in the middle of the day, which is almost never, since the battery is freakin' awesome.
Don't worry about the battery too much, but don't reach 0% too often, and you'll be good. By too often, I mean every 3-4 months or so is OK. I base these things from my Sony device which I've had for almost 3 years. The (sealed in) battery was very good out-of-the-box, and it's still very good after nearly three years, so I won't mess with a proven success.
Click to expand...
Click to collapse
Thanks for the details information. I figured the technology is so advanced with batteries that overcharging is in the past.

t12icky0 said:
I usually let mine get to around 5% everytime. Then charge it back fully to 100%.
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Click to collapse
+1 :good:
J.Biden said:
Nah, that's old news. Modern chargers and devices know when they've hit 100%, so they stop charging at that point and lets the battery dip down to 98-99% before trickle charging up to 100 again, and so on until you unplug. It's completely safe, and you shouldn't trust all those garbage click-bait articles out there. Do not, however, go down to 0% before you recharge it. That can actually damage the cells in your battery, so plug it into the charger before that. If you notice some funky behavior from the battery, like if it's jumping from 30% to 20% in five minutes, or is stuck at 10% for an hour, then it's a good idea to completely drain it to 0% to calibrate the battery since the OS has no idea how much battery is left (so it knows where 0 is again). This will usually happen after flashing a different ROM. Charge it up to 100 again and it should be back to normal.
I personally charge it normally at night, without quick charge, since there's no point in having it quick charge while I'm a sleep for around 8 hours. I'll only quick charge it in the middle of the day, which is almost never, since the battery is freakin' awesome.
Don't worry about the battery too much, but don't reach 0% too often, and you'll be good. By too often, I mean every 3-4 months or so is OK. I base these things from my Sony device which I've had for almost 3 years. The (sealed in) battery was very good out-of-the-box, and it's still very good after nearly three years, so I won't mess with a proven success.
Click to expand...
Click to collapse
I reach 5% max, is it a problem for the battery's life?

turtuv said:
+1 :good:
I reach 5% max, is it a problem for the battery's life?
Click to expand...
Click to collapse
Not at all, but just try to not discharge the battery completely to the point where it turns itself off. It won't ruin the battery to the point where you actually notice it there, but it's better if you just turn the phone off if you're able to (unless it's an emergency, of course).

J.Biden said:
Not at all, but just try to not discharge the battery completely to the point where it turns itself off. It won't ruin the battery to the point where you actually notice it there, but it's better if you just turn the phone off if you're able to (unless it's an emergency, of course).
Click to expand...
Click to collapse
I never discharge the battery completely, like I said I use until battery is max at 5% [emoji3]
Sended from my Samsung Galaxy S7 Edge Gold Platinum

I charge it when it hits 20%. But i dont use the fast charging unless i need a quick top up

Does it hurt the battery to charge the phone with a different charger ?
Sent from my SM-G935F using Tapatalk

I never used the fast charging, I think that slowly charging a battery is better for the lifetime. Most of the time it is below 10 % before I plug it in and I also want it to be at 100% and ready (green LED) when I unplug it.
my note 3 battery is still superb and I got the phone since 2013

Best way to keep a battery in good health is to charge it to full before you start using it. Also, try and never charge it until it's less than 50%. Charging it overnight is perfectly fine it won't hurt anything but once ina while, at least say once a month let the battery drain all the way, try to turn it back on if it goes off sometimes there is still some juice left and it might start up, once it won't start anymore try and charge it without turning it on to full. I wouldn't do it more than say a couple times a month any more than that is overkill and may do more harm than good. These are the guidelines I use and I have never had battery issues. I currently am waiting for my S7 Edge and on my Nexus 6 I usually get 48+ hours with 4+ hours SoT. I'm just an average user currently.

What can happen if the battery reach 0% and the phone shutdown?

Hi guys, I usually lost about 3% overnight with 4G and power saving mode. But tonight a strange thing happened. For the first time, I got a huge battery drain. I leave the phone at 01:30 am with 25% and this morning I found it turned off. I think that is impossible to lose 25% over 7 hours, what could be happened? I would like to know if the fact that the battery has reached 0% and the phone shutted down can damage the battery.
I am a little bit worried since I read a lot about the fact that the battery never should reach 0% and the phone doesn't have to shutdown.
Inviato dal mio SM-G935F utilizzando Tapatalk

No it can't damage the battery. At least not if you charge it in the next few days. Here's the thing. The battery voltage should never reach under 2.5v. If this happen, the small chipset inside the battery will completely turn it off in order to prevent further loss of voltage. When this happens, the battery pins will be unresponsive, meaning that it can't provide electricity and can't get electricity either. It means you won't be able to charge it with your regular charger. At this point it's not even completely dead, but it would need some professional chargers to in order to revive it.
With that being said, your phone shuts down well before reaching 2.5v. Unless you leave the battery it at 0% for days (or probably weeks) you can still charge it and everything will be perfectly fine.

ZeroCGTI said:
No it can't damage the battery. At least not if you charge it in the next few days. Here's the thing. The battery voltage should never reach under 2.5v. If this happen, the small chipset inside the battery will completely turn it off in order to prevent further loss of voltage. When this happens, the battery pins will be unresponsive, meaning that it can't provide electricity and can't get electricity either. It means you won't be able to charge it with your regular charger. At this point it's not even completely dead, but it would need some professional chargers to in order to revive it.
With that being said, your phone shuts down well before reaching 2.5v. Unless you leave the battery it at 0% for days (or probably weeks) you can still charge it and everything will be perfectly fine.
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First, thank you for the explanation, I don't know so much things about batteries, but I do know that there are a lot of legends out there. Usually I charge my phone when I reach 4/5% not less. Is that a bad beavhiour? About my topic, like I said this is the very first time that the battery completely discharge and the phone obviously shut itself down. When I woke up I putted the phone into charge immediately. I just hope that it's all ok, but I don't understand how it is possible to drain 25% of battery over 7 hours or less.
Inviato dal mio SM-G935F utilizzando Tapatalk

It doesn't really matter for Lithium-Ion batteries. It's not bad, but it's not good either. Use the way you like it. There's no harm in charging it to 100% every time you see it under 50%. There's no harm if you don't charge it from 0 to 70% either. It really doesn't matter. The worst thing that can potentially happen is to get some odd numbers for the remaining charge. Like having 80% and in just 2 minutes to have 76%. The capacity of the battery will be the same, it will last the same, only the indicator might be a little inaccurate. If you ever notice this, do a full cycle. Discharge it to 0% (let the phone shut-down), charge it to 100% and that's it. It will show accurate readings again.
But you don't have to do that constantly. Only if notice wrong readings.

ZeroCGTI said:
It doesn't really matter for Lithium-Ion batteries. It's not bad, but it's not good either. Use the way you like it. There's no harm in charging it to 100% every time you see it under 50%. There's no harm if you don't charge it from 0 to 70% either. It really doesn't matter. The worst thing that can potentially happen is to get some odd numbers for the remaining charge. Like having 80% and in just 2 minutes to have 76%. The capacity of the battery will be the same, it will last the same, only the indicator might be a little inaccurate. If you ever notice this, do a full cycle. Discharge it to 0% (let the phone shut-down), charge it to 100% and that's it. It will show accurate readings again.
But you don't have to do that constantly. Only if notice wrong readings.
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Until now i didn't saw any wrong readings, except from 100% to about 94/95% where the battery drop faster. Except that i often let the battery reach 4/5%, but if it is not good i will charge it when it reach max 10%. About the 0% question i hope that this will not happen again and that the battery keeps its complete functionality after this episode

Don't worry, it's good. Li-Ion batteries are way more durable than the old Li-Pol batteries.

I hope so Thank you.

I had 37% battery drained overnight and wondered why...I turned off google photos backup and now is fine. I still lost about 9% overnight but it isn;t too bad as I get a lot of notifications through the night

thegame261 said:
I had 37% battery drained overnight and wondered why...I turned off google photos backup and now is fine. I still lost about 9% overnight but it isn;t too bad as I get a lot of notifications through the night
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In my case my phone drains about 3/4% overnight, but like i said this morning i found it turned off and i leave it with 25% of charge. Very weird, i don't have an explanation yet.

turtuv said:
In my case my phone drains about 3/4% overnight, but like i said this morning i found it turned off and i leave it with 25% of charge. Very weird, i don't have an explanation yet.
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Well on my 6s plus it seems to die when at 8% which it did yesterday. It never gets under 5% it does before that

thegame261 said:
Well on my 6s plus it seems to die when at 8% which it did yesterday. It never gets under 5% it does before that
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The S7 arrives at 1% tops.
It doesn't really matter for Lithium-Ion batteries. It's not bad, but it's not good either. Use the way you like it. There's no harm in charging it to 100% every time you see it under 50%. There's no harm if you don't charge it from 0 to 70% either. It really doesn't matter.
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About that, i read some topic on other forums where people says that is very bad discharge the phone until 4/5% and they says that the correct thing to do should be to discharge the phone when it reach 40% of charge, because under that percentage the battery's life became shorter. This seems really strange to me.