Battery Calibration

Battery Calibration


Requirements: Android 2.1+ | Root permissions

Calibration needs to be done after flashing a new ROM, but you can calibrate any time you think your battery is miscalibrated. This program does it by removing the batterystats.bin system file. The OS generates a new clean batterystats file soon, thus any fake information from the previous ROM is removed.
It's suggested, but not necessary, to let the phone fully discharge after calibration, then charged to 100% without break.

The app shows your actual battery status, and only allows you to start the calibration (i.e. removes the file) when it's fully charged, unless you force earlier calibration.
The voltage meter can be useful too. Full charge is around 4200mV.
There is an option to beep when 100% is reached so you don't have to closley follow the changes.

Recent changes:
- Option to beep when 100% is reached.
- Voltage meter added.
- New icon.
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Free
82
4.1
User ratings
27779
Installs
1,000,000+
Concerns
0
File size
47 kb
Screenshots
Video of Battery Calibration Screenshot of Battery Calibration Screenshot of Battery Calibration
About Battery Calibration
Requirements: Android 2.1+ | Root permissions

Calibration needs to be done after flashing a new ROM, but you can calibrate any time you think your battery is miscalibrated. This program does it by removing the batterystats.bin system file. The OS generates a new clean batterystats file soon, thus any fake information from the previous ROM is removed.
It's suggested, but not necessary, to let the phone fully discharge after calibration, then charged to 100% without break.

The app shows your actual battery status, and only allows you to start the calibration (i.e. removes the file) when it's fully charged, unless you force earlier calibration.
The voltage meter can be useful too. Full charge is around 4200mV.
There is an option to beep when 100% is reached so you don't have to closley follow the changes.

Recent changes:
- Option to beep when 100% is reached.
- Voltage meter added.
- New icon.

User reviews of Battery Calibration
deleting batterystats.bin does NOT calibrate your battery, the full charge and discharge that they recommend after is what will calibrate your battery. see this for info from an actual android engineer: https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT dont waste your time with this! batterystats,bin is recreated when you fully charge it is simply the info re: battery usage in settings
Oct 16, 2012
Works with SGS+
Jan 14, 2012
**USE THIS IF YOU FLASHED TO CM7 / CYANOGENMOD 7.1.0 AND YOU'RE HAVING BATTERY DRAIN ISSUES** Works as advertised, after I upgraded from Eclair 2.1 to Gingerbread 2.3.7 on HTC Hero CDMA (Sprint).
Jan 3, 2012
After the battery calibration; it started restarts.. Especially, when I am charging. :( BTW Samsung Gio 2.3.5 Rooted original rom. :(
Nov 20, 2011
Simple. Needs root! Only required when you changed your OS.
Nov 19, 2011
Android Market Comments
A Google User
4 days ago
cool cool
A Google User
5 days ago
Helpful
A Google User
Apr 27, 2015
U dont need an app to recalibrate the battery readback If it is giving false charge values or nfc errors then u onlyneed to remove the battery for 30seconds and upon switching back on hold sownthe far left touch menu button forcing safemode. Let fone boot up dont touch it for a minute minimum .. press and hold in power key for +10secs and phone shuts down again rebooting itself. That forces test mode to clear the log files and re-writes a fresh current set of logs including battery cal
A Google User
Apr 24, 2015
Needs root
A Google User
Apr 24, 2015
Works battry was being drained so fast wth this get 12 hours screen time and days standby
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