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[Guide] Battery calibration for s3 mini

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Aronuser's Avatar
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Thumbs up [Guide] Battery calibration for s3 mini

Some say battery calibration is a myth, I'm quite sure it works!

You can give that a try after flashing a new rom to improve your battery life!

(the guide is tested but still i'm not responsible for any demage to your phone)

1. you need a recovery to access a specific file

twrp works

2. you need the xposed app: disable low battery warning (or a likely name)

(for that you can fully dischage your phone)

3. you need a battery discharger app this one: Fast discharge

(for that you can faster discharge)

4. you activate the xposed app and discharge your battery with the app (set the app to discharge to 0%)

(i wouldn't activate the light or the vibration since i don't know if they can overheat for discharging the battery)

5. set the governor to performance to have a faster discharge

6. your phone will kind of be fully discharged and just turn off at maybe 5% battery or later

7. charge your phone just plug it in until it's 100%

(i couldn't boot like that to the system so i had to reconnect after 100% charging which isn't the right way to calibrate battery)

(so if you can then boot whilst charging or plug back in after booting on 100% quickly)

8. enter the recovery and search for this file:

> /data/system/ batterystats.bin

then reboot

thats all!
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mauam's Avatar
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More info about the myth here. I only calibrate my bat when I feel it needs to be calibrated, even being a myth

P.S: or you can download a battery calibration app from Playstore.
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Jonny's Avatar
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The myth of "calibrating the battery makes it last longer" was dispelled by Google's own engineers. All calibrating the battery does is wipe the battery statistics file that keeps the usage history you see in settings. This is something that happens when the device nears 100% charge anyway so its pretty much useless to do it.

As for "the right" way to calibrate the battery, the OP clearly has no idea what he's talking about... its the battery usage history file, there are 2 ways to delete it - manually or just charge the battery to 100%, neither of those does any harm to the device and neither is better than the other seeing as this whole thing of calibrating the battery is utter nonsense.

To which end I don't really see a reason or need for this thread.
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