Develop Bugs

[Q] Odd Battery Charge Curve

hi all,
i noticed the charge curve on my evo is not linear. at first it's logarithmic and then linear (see pic). everything is off (3g/4g, wifi, bluetooth, sync) while charging (only turning on once in a while to check the %). is this normal?
ive wiped my battery stats and done all that. during use, the battery drops to 60% quickly and then discharges slower. im using deck's gb 1.3 rom, havent changed the kernel, no wake lock issues as far as i can tell.
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I was having the same exact issue. I bought a new battery and figured it must be bad when it would jump from 80 percent to full in a matter of minutes. Then it would discharge to around 70 percent in a matter of an hour. After it hit 70 percent it would discharge more slowly. This was a battery that the Sprint store gave me and I was led to believe it was new. After it did this weird charging discharging issue I went back to sprint and this time received a brand new battery in the package. The young lady behind the counter showed me a box full of all types of used batteries and explained they probably pulled one out of the box of the used batteries. I exchanged my original battery because it wasn't fully charging anymore but the weird charging spike I got with the replacement battery was a first for me. Anyway the "NEW" battery is working like it should so you may be looking at a bad battery.

I know you said you wiped battery stats but did you calibrate the battery at all?

oop. forgot all about this post. thanks for your responses.
i assumed something weird may have happened from my going stock to root so i checked out a friends battery. he never rooted his phone. unfortunately i get the same charge curve.
yes, i have calibrated my battery/ ie, charge to full, wipe stats, then drain phone til shut off.
i will try contacting sprint/htc for a new battery and see how that goes.
anyone else have this issue?

Me, all the time. Have yet to have a different curve ever. Mine happens a little higher though, around 70%. Try battery monitor widget and you can see the actual charging voltage
Sent from my PC36100 using XDA App

I use SetCPU with 3500mAh battery and last 28hrs on single charge
Sent from my PC36100 using XDA App

plobukt said:
oop. forgot all about this post. thanks for your responses.
i assumed something weird may have happened from my going stock to root so i checked out a friends battery. he never rooted his phone. unfortunately i get the same charge curve.
yes, i have calibrated my battery/ ie, charge to full, wipe stats, then drain phone til shut off.
i will try contacting sprint/htc for a new battery and see how that goes.
anyone else have this issue?
Click to expand...
Click to collapse
After you drain the battery completely, charge it to 100% without unplugging. Recalibrate with that method and see if it helps.
Supersonic Evo 4G | MIUI | Tapatalk

[Q] SOLVED! Battery loss after reboot- Any ideas?

I rooted my Evo for the first time 8 days ago and I really like the ability to control more features of the phone and being able to try different roms. Before rooting I had poor battery life and I had hoped that rooting would help. I have tried MikG's, Tomatos Classic, and I am currently on Decks 1.3 with the Lee kernel.
My battery life is still very poor. If I make some phone calls or use the web (even on wifi) it might last 3 hours. I've read for hours about doing radio updates, but I am on the current one as far as I can tell.
Also, when rebooting today I went from 53% battery life to 21%. The reboot was fast and took less than a minute. I will post some screens.
Any ideas on how to fix my issue?
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The only thing I can say is get a new battery cuz my bro has the epic and he had the same issue with it and he bought a hiperion battery and it hasn't did since .
Sent from my PC36100 using xda premium

I got a couple new anker batteries off ebay. They should be here monday or tuesday. I hope it does the trick.
Anyone have any other possible solutions?

Try calibrating your battery. Your batterystats.bin file is on the data partition iirc, so when you wipe data you wipe that file. Doing so creates a new file upon boot, and if you don't calibrate properly then you'll have weird issues such as the fluctuating battery reading. The best option is to either calibrate or only flash when you're at 100%. Try calibrating to get there, then when you wipe and flash only do so fully charged. If not wiping data, you should be fine.
There are guides available on calibrating the battery, as well as a battery calibration app.
If you're getting extra batteries, I'd invest in a wall charger as well if you don't get one with the batteries you ordered. Charging your batteries in an external charger will eliminate any battery stats issues in the future.
Good luck!
Supersonic Evo 4G | MIUI | Tapatalk

Thanks. A wall charger is included with my batteries. I have wiped battery stats and it didn't seem to help. I will try again in a few hours when I need a charge.
Sent from my PC36100 using XDA App

EvoJake said:
Thanks. A wall charger is included with my batteries. I have wiped battery stats and it didn't seem to help. I will try again in a few hours when I need a charge.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Be sure to follow the full calibration technique. Charge to 100, wipe batterystats, drain without breaks, charge fully without breaks. Incorrectly calibrating will keep your phone in the same condition it was.
However the wall charger should eliminate those problems. If problems persist with all batteries after charging externally, it's something with your rom or your phone.
Supersonic Evo 4G | MIUI | Tapatalk

Im going to assume that the roms you are using are sense roms i know mikg is i tried it out with the anthrax kernal and had pretty good battery life. i have noticed though if you go with cm7.2 and a tiamat kernal i had the best battery. not sure if that will help or if it is a battery calibration issue.

I got the new anker batteries in the mail today. Charged one up and am trying it now. I will update later with the results.

Ok. So it was definitely a battery issue. On my second charge with my new anker batteries and after 11 hours of use im still at 68% battery life. So it has a potential to last 30 hours on one charge. I guess it just goes to show you that these batteries are meant to be replaced periodically. Thanks to all who tried to help me out!
Jake

I had very bad battery issues with my Evo 4g. bought 2 new batteries and now I get great battery life

Im currently at 40% battery life after 30 hours since charge. Little use though. Only 1.5 hours on calls and 1.5 hours with display on. And this is with a sense 3.5 rom! I wish I had bought new batts a while ago.

[Q] Sudden Dead at 65% battery, anyone can help please?

Hi All,
I have experienced something wrong with my HTC one x (upgraded OTA). It is off automaticly when reached around 40-60% battery. it happens randomly but mostly around it.
when i turn on again, it is just start till the unlock screen and it suddenly OFF again.
I have to plug the charger first and start again to make it live.
when i checked the battery while charging from the sudden death. it is charging from 35% power which it means there is still a lot of power.
when it is charged full to 100% it is automatictly off again when reach around 40-60%. In these case it off at 65%, please take a look at my battery log at the attachment.
Does anyone experience the sama thing, please help me to figure these out.
thank you so much for the attention.
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kn33cow said:
Hi All,
I have experienced something wrong with my HTC one x (upgraded OTA). It is off automaticly when reached around 40-60% battery. it happens randomly but mostly around it.
when i turn on again, it is just start till the unlock screen and it suddenly OFF again.
I have to plug the charger first and start again to make it live.
when i checked the battery while charging from the sudden death. it is charging from 35% power which it means there is still a lot of power.
when it is charged full to 100% it is automatictly off again when reach around 40-60%. In these case it off at 65%, please take a look at my battery log at the attachment.
Does anyone experience the sama thing, please help me to figure these out.
thank you so much for the attention.
Click to expand...
Click to collapse
Uhm I'd suggest you try a battery recalibration, it might be some issue with the software! Try letting your battery drop to 0 % (I really mean that the phone falls out because of zero power, then reboot it untill it no longer reacts), then the phone is completely empty.
Then recharge it again to 100 % (let it charge for about 8 hours).
But to make sure you bettery just google "battery calibration" for a good guide on it!

H-Cim said:
Uhm I'd suggest you try a battery recalibration, it might be some issue with the software! Try letting your battery drop to 0 % (I really mean that the phone falls out because of zero power, then reboot it untill it no longer reacts), then the phone is completely empty.
Then recharge it again to 100 % (let it charge for about 8 hours).
But to make sure you bettery just google "battery calibration" for a good guide on it!
Click to expand...
Click to collapse
thank you so much for the tips, right now i will try to make it really empty and charge. one question when it is already full should i unplugged the charger first and then calibrate or i just calibrate with the charger plugged on?

it is still happen and my phone shuts down by itself randomly around 40-60%.
is there any other solution i can do to get rid these battery case anyone?

Have you tried clearing Battery stats in recovery, then let it drain till the phone shuts down, then charge till full while the phone is still off... The LED will turn green once it's full...
If still same problem, charge till full again, turn on Airplane mode and run the battery test, on your dialer key in *#*#3424#*#*, click "Accept" then on bottom right tap on "More", select Battery test and click run

my battery pass the test but the status of it still error. it will shut down by itself when comes to 40-60% randomly. TT i have never experienced my phone low battery or red. it dead already around 40-60 so i should charge it.

I posted that then I saw your thread:
http://forum.xda-developers.com/showthread.php?t=1706811

Galaxy S3 AT&T Battery Going Crazy

Hey all,
Let the following speak for itself:
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This started happening out of nowhere, a couple months back. My phone will lose battery at an incredibly fast rate, then swoop back up (without being plugged in), then fall, etc etc until it hits 0%. I can then turn it back on and it says 50% or what have you, and the same process repeats. These are the things I've tried:
1. Bought a new ZeroLemon battery because I thought my battery might be broken. All this served to do was increase the number of swoops. The battery still barely lasts half a day.
2. Cleaned the contacts of the battery and on the phone.
3. Installed all kinds of battery helpers and battery recalibration apps. Here's a screenshot of an app telling me, after I charged the phone to 100% (with a separate battery charger so I know it was at 100%).
It appears the phone is just reading the battery incorrectly. Not only does it report 60% but it also reports 3800 mV, which a fully charged battery should be around 4200 or 4300 correct?
4. Now here's the weird one: I blew on the contacts. This made things work better for a week or two. The new battery lasted about 3 days, which I thought was pretty good. Now it's back to where it was again.
It seems like I've tried just about everything, and it's a problem with the phone. Only problem is, as you can see, I have CM installed and the phone is over a year old, so any kind of warranty is long bye bye. Any suggestions my fellow S3 owners? I've tried googling this problem everywhere and it seems I'm the only one with it.
Thanks so much

dyno0919 said:
Hey all,
Let the following speak for itself:
This started happening out of nowhere, a couple months back. My phone will lose battery at an incredibly fast rate, then swoop back up (without being plugged in), then fall, etc etc until it hits 0%. I can then turn it back on and it says 50% or what have you, and the same process repeats. These are the things I've tried:
1. Bought a new ZeroLemon battery because I thought my battery might be broken. All this served to do was increase the number of swoops. The battery still barely lasts half a day.
2. Cleaned the contacts of the battery and on the phone.
3. Installed all kinds of battery helpers and battery recalibration apps. Here's a screenshot of an app telling me, after I charged the phone to 100% (with a separate battery charger so I know it was at 100%).
It appears the phone is just reading the battery incorrectly. Not only does it report 60% but it also reports 3800 mV, which a fully charged battery should be around 4200 or 4300 correct?
4. Now here's the weird one: I blew on the contacts. This made things work better for a week or two. The new battery lasted about 3 days, which I thought was pretty good. Now it's back to where it was again.
It seems like I've tried just about everything, and it's a problem with the phone. Only problem is, as you can see, I have CM installed and the phone is over a year old, so any kind of warranty is long bye bye. Any suggestions my fellow S3 owners? I've tried googling this problem everywhere and it seems I'm the only one with it.
Thanks so much
Click to expand...
Click to collapse
I'm not sure exactly how to fix your problem, but just wanted to state that battery helping apps and calibration apps are bogus, they serve no purpose!

DMF1977 said:
I'm not sure exactly how to fix your problem, but just wanted to state that battery helping apps and calibration apps are bogus, they serve no purpose!
Click to expand...
Click to collapse
I also forgot to mention that I have tried formatting everything and installing a different ROM etc etc. Is there any option short of buying a new phone?

[FP4][LOS20] Absolutely atrocious battery life. Phone dies every night it's not plugged in

Hi guys
I moved to LOS in the hopes of improving battery life but it's been pretty bad. I'm at my whits end. I tried using PhoneProfilesPlus to turn off all sensors and radios overnight but it didn't help. My phone literally burns through battery after every even small charging cycle. I used GSam Battery Monitor but couldn't identify any specific app to be the culprit either.
Last night I even used "Battery Tool" to stop most all apps as well as "SaverTuner" to change the Doze mode settings but even still I get the following usage curve:
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Btw the times seem to be completely off too. The last charging spike was around midnight.
I also noticed that Wifi won't show as "off" in the stats unless I reboot my device. But doing that didn't change anything either. As you can see, after I rebooted in the evening, the curve was practically flat. After charging a bit and unplugging before sleep though the phone immediately started draining again.
Any help is very appreciated. It seems I can't go back to stock bc of the A13 bootloader but battery life wasn't much better on stock either.

You also have other helpful charts in Gsam.
What do you mean by "unplugging before sleep"?
Turn off your phone completely overnight and compare the charge before and after.

I meant that I don't leave the phone plugged in overnight. Sadly I can't really gleam anything helpful from the statistics. I'm going to try and charge it to full before this night and set a custom reference point

Looking at that graph, do you have your screen always on? The 2-3 hours around midnight show screen on, but no battery drop. I assume you had it on charge at that point?
What charger are you using? I use an Anker 5 port Quickcharge 4 charger with a USB-C cable that has an LED display to show the charging wattage. I usually get 18W (9V*2A) which pushes charge in quite quickly.
I can't speak for LOS20 as I'm on stock A12, but the battery does seem to discharge faster than you expect.
I use AccuBattery to monitor the power usage and charge/discharge history. Put it this way, I find I do a number of smaller charges through the day. Driving along, I'll have the phone hooked up to the Android Auto slow charging it while I'm using it. I get home and I'll stick it on charge for 45 minutes to boost it up from 20% to 80%.
The rated capacity of the battery is 3905mAh, and AccuBattery is estimating my current battry capacity at 3443mAh, a reduction of 12% in 9 months. That's with only charging between 15% and 80% most of the time. I'll give it a 100% once a month or so.

Thanks for your replies!
I'm thinking something is really wrong with deep doze in my case. I charged my phone fully and got to 50% in a day's use. I made a point of not plugging it in at all because normally you'd expect it to survive on half a battery but no dice. it just starts burning through battery suddenly.
I'm honestly unsure about this graph too. I certainly didn't use the phone and the screen until 2am. I might need to look at other apps too but that doesn't change that my pone went from 55% to 0 in about 6h.

NiPfi said:
(...) I certainly didn't use the phone and the screen until 2am. (...)
Click to expand...
Click to collapse
You didn't have to use. Apps and services do it for you.