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How to calibrate the battery on the Android device

Battery life a major concern for Android smartphone users and the greater versatility of our devices has made the demand on them much more than it was a year ago. After a while, you may notice a decrease in the battery performance of the device. It is normal to notice a slight decrease in battery performance over time, but if this deterioration occurs drastically and you are sure that the battery is not the problem, you can recalibrate the battery.

This problem typically occurs due to irregular billing models or abnormal applications. Flashing a custom ROM is also a known cause of drastic battery depletion.

What does it mean to calibrate the battery?

The Android system has an integrated indicator that tracks the remaining charge level on the battery and in this way knows when full or empty.

Sometimes, this data gets corrupted and starts showing incorrect information due to incorrect battery level detection. For example, the phone may suddenly turn off when the battery is still charged.

If this happens, it is absolutely necessary to calibrate the battery. What the battery calibration does is simply reset the battery statistics and generate a new batterystats file to eliminate all false information and cause the Android system to start displaying the correct data.

Before you start with battery calibration

1. Check if the battery is the problem

If you have a removable battery, take it out and check if it is not swollen or swollen as it could indicate a damaged battery which, in this case, the calibration will not make any difference. need to replace the battery if physical damage is found or at least take it to a workshop for expert advice.

2. Clear the cache partition

Battery drain is a common problem when updating to a new version of Android or flashing a custom ROM. Before calibrating the battery, be sure to empty the cache partition.

To do this, restart your device in recovery mode, scroll down to " Clear data / restore settings of factory "and click on the option" Wipe Cache Partition ".

Once done, you can proceed with the rest of this tutorial.

Calibrate the battery on a non-rooted Android device

For non-rooted Android devices, calibration is manual and may be a little cumbersome. There is no guarantee that it will work and sometimes it may further damage the battery. But if you're facing serious battery problems, you can decide to take the risk.

Follow the steps below:

  • Let your phone drain until it shuts down due to the low battery.
  • Charge the battery until it reads 100%. Do not switch on the device while charging!
  • Unplug the charger and turn on the phone.
  • Let it sit for 30 minutes, then recharge it for an hour. Do not use the device while connected.
  • Unplug the device and use it normally until the battery completely discharges again.
  • Then upload it 100% again.

What gets this procedure is to back up the batterystats file so that the battery is now calibrated.

Calibrate the battery on a rooted Android device

For rooted users, the process is much simpler. Make sure the battery is fully charged before continuing:

    1. Go to the Google Play Store and download the battery calibration app.
    2. Launch the application.

  1. Click the calibration button. Grant application root access.
  2. Restart your phone and use it normally until it reaches zero percent.
  3. Recharge your phone up to 100% again.
  4. Now you should have a correct reading from the Android operating system.


that's all to calibrate your Android battery. If this works for you, please let us know in the comments section below. If none of the above methods work for you, the battery is likely to be damaged and may need to be replaced. Seek expert advice and make sure you get an original replacement.