Android has always had a battery drain issue, but here is one method which might solve your problem and will give you a better battery life than before. This method is only for rooted devices and the devices which have custom made Recoveries on it.
The battery stats file in your device tells your device how much battery it has got left. Sometimes this file will tell your device the battery is full even if it is not. This problem can easily be solved by wiping the battery stats. The procedure is easy if you have custom made recoveries like Clockworkmod recovery and Amon_RA recovery.
All you have to do is boot into recovery mode and go into the wipe section and wipe the battery stats and then reboot or you can follow the steps here,
- Charge your device till the LED turns green
- Power off and reboot into recovery mode
- Wipe the battery stats
- Reboot your device
Well this method is not to be performed regularly because it might cause many side effects. May also reduce the battery life in the future. You can do this method while flashing a new ROM or once in a month or so.
