Battery stuck at 100 percent

[ralphx10]

I've got a strange problem on my n7. After fully charging and unplucking, the battery indicator will show 100 percent for about an hour. Better battery stats is also reporting 100 percent for an hour.

I'm currently running pa 2.20 but also had this problem on slim bean and stock. I think it started after I used the Franco kernel for some time. At least, that's when I first noticed it.

Installing a new rom, a factory reset, relocking and unlocking the bootloader and reinstalling stock all did not help.

Does anybody have an idea what's going on here and how I can solve this problem?

Sent from my Nexus 7 using xda app-developers app

 

[auda]

I confirm this problem, happened to me a couple of times but a simple reboot fixes the problem

Sent from my Nexus 7 using xda app-developers app

 

[Turbotab]

I've got a strange problem on my n7. After fully charging and unplucking, the battery indicator will show 100 percent for about an hour. Better battery stats is also reporting 100 percent for an hour.

I'm currently running pa 2.20 but also had this problem on slim bean and stock. I think it started after I used the Franco kernel for some time. At least, that's when I first noticed it.

Installing a new rom, a factory reset, relocking and unlocking the bootloader and reinstalling stock all did not help.

Does anybody have an idea what's going on here and how I can solve this problem?

Sent from my Nexus 7 using xda app-developers app

Assuming you have CWM recovery, have you reset the battery stats, it worth a go.
> Advanced
> Wipe Battery Stats

 

[ralphx10]

Assuming you have CWM recovery, have you reset the battery stats, it worth a go.
> Advanced
> Wipe Battery Stats

Thanks, but I already tried it. And unfortunately it didn't solve the problem.

Sent from my Nexus 7 using xda app-developers app

 

[Turbotab]

Thanks, but I already tried it. And unfortunately it didn't solve the problem.

Sent from my Nexus 7 using xda app-developers app

I know that Franco Kernel use a custom Ramdisk, that even when flashing a new kernel it may not get overwritten, whether this could affect the battery stats, you would have to ask him.

I asked in bricked kernel dev forum, if it was required to flash a new boot.img when loading new custom kernel, and the answer was only if coming from a Franco Kernel, due to his custom ramdisk.

I know that following this guide will return you to stock everything, including the ramdisk
http://forum.xda-developers.com/showthread.php?t=1907796

. In theory you can just flash a stock boot.img via fastboot and achieve the same result, you lose root and all, but I've never done it, only restored a factory image via adb.

 

[simms22]

showing 100% for an hour or more is normal while using. if sleeping it could show 100% for several or more hours. it actually shows 100% when the real capacity is at 95%. if you leave it plugged in after it shows 100%, you can charge the battery a bit more.

 

[ralphx10]

I know that Franco Kernel use a custom Ramdisk, that even when flashing a new kernel it may not get overwritten, whether this could affect the battery stats, you would have to ask him.

I asked in bricked kernel dev forum, if it was required to flash a new boot.img when loading new custom kernel, and the answer was only if coming from a Franco Kernel, due to his custom ramdisk.

I know that following this guide will return you to stock everything, including the ramdisk
http://forum.xda-developers.com/showthread.php?t=1907796

. In theory you can just flash a stock boot.img via fastboot and achieve the same result, you lose root and all, but I've never done it, only restored a factory image via adb.

Thank you. I will give this a try. Maybe it really is the ramdisk.

Sent from my Nexus 7 using xda app-developers app

 

[ralphx10]

showing 100% for an hour or more is normal while using.

Could you elaborate? I didn't have this on any other android device i used and I can't really see how giving obviously false battery stats could be normal.


Sent from my Nexus 7 using xda app-developers app

 

[simms22]

Thank you. I will give this a try. Maybe it really is the ramdisk.

Sent from my Nexus 7 using xda app-developers app

you are being lead astray.. what you are seeing is NORMAL behavior. why not check to see if your trashcan in your kitchen is full, that might be the cause of your long 100% too :silly:

---------- Post added at 05:59 PM ---------- Previous post was at 05:45 PM ----------

Could you elaborate? I didn't have this on any other android device i used and I can't really see how giving obviously false battery stats could be normal.


Sent from my Nexus 7 using xda app-developers app

while sleeping and not being used..

notice the long 100% while the device wasnt being used?

nearly 40 minutes screen on time before it dropped to 99%

 

[ralphx10]

Thank you. So it really seems to be normal.

Sent from my Nexus 7 using xda app-developers app

 

[superchilpil]

Assuming you have CWM recovery, have you reset the battery stats, it worth a go.
> Advanced
> Wipe Battery Stats

Someone has come forward and proven that the battery stats get wiped every time you reboot so doing it in clockwork is redundant

Sent from my HTC One XL using Tapatalk 2

 

[simms22]

Thank you. So it really seems to be normal.

Sent from my Nexus 7 using xda app-developers app

yes. instead of worrying about it, enjoy you device and its awesome battery life