How to calibrate battery on Android devices

How to Calibrate Battery on Android

So what does calibrating your Android battery mean? It means getting the Android OS to rectify the false data, so that it shows the correct data back again. Do you know how to calibrate battery on your Android smartphone/tablet? If not, let us help you do it.Image result for calibrating battery android app

If you have recently updated OTA, flashed a ROM, restored a full backup, or changed your phone’s battery, there are nice chances that your Android will display false charge level. So we are here to help you fix this problem by calibrating the battery.

The problem, and its cause

Before you go ahead to calibrate your phone’s battery, it is better to track the source of the issue; could either be the OS or just your battery that has neared its end-life. If your device has a removable back cover and battery, analyze the battery for any bulges. On a phone with a unibody design, you would be able to see the bulged battery forcing the rear of body. In any such scenario, it is better to take your phone to a repair centre.

But if there’s no such symptom, it simply means your phone’s battery needs a bit of calibration.

Due to increased activity of the android phones, the battery starts draining fast. The users need to calibrate to maintain a State of Charge (SOC) mismatch.  So what is SOC?  There might be times when you plug in your phone to the charger and it shows 100% just within a few minutes. But in reality, your phone wouldn’t even have been charged half way despite the fact it shows 100% charged. What happens now is, as you start using the phone, the battery drains quickly and you will ultimately need to plug in the charger again (It will display wrong low-battery levels, while the device will work normally until it consumes the full charge). The battery capacity is tracked by a feature of the Android operating system called BatteryStats. SOC arises when this becomes corrupted and starts showing you false data.

Why would you need it?

A thing you need to understand is that, you can’t really calibrate the battery itself, as it is just a cell that stores power temporarily and then discharges. In the case of Android it is lithium- ion batteries, that include a printed circuit board, which prevents it from exploding or deep discharging.

Basically once you’ve calibrated, you’ll get to know the proper battery charge of your phone. Your phone will no longer show false data and cause unwanted trouble for you.

How to calibrate battery on Android devices

» Non-rooted devices

Users who have a non-rooted Android device are limited to the manual process that requires cycling the battery charge a few times.

  1. You need to use your phone so much that it reaches a point where it turns itself off.
  2. Now turn it on and let it turn off again on its own.
  3. Then plug in your phone into the charger. You need to be really patient and need to have a lot of self control, as your phone will tempt you to switch it on before its 100%. If it does so, instantly power it down and plug in the charger.
  4. Now unplug the charger and turn on your phone, but don’t use it. There are chances that the battery indicator doesn’t say 100%, so plug in your phone into the charger again. Let it charge until it says 100% on the screen.
  5. At once, unplug your charger again and restart it. If by chance it doesn’t say 100%, and then plug in the phone into the charger again until it reaches 100%.
  6. You have to repeat these cycles until it shows 100% when you start it up without being plugged in.
  7. Now that you have reached the full charge level, discharge it again back to zero. Then fully charge the battery again without any disturbance. What it does is, cycle the charge in the battery and reset the levels back to normal.

When you switch on the battery after it’s fully charged, you must have reset your Android system’s battery percentage.

» Rooted devices

The calibration process on rooted Android devices is carried out by apps. We recommend Battery Calibration app by NéMa. While clearing the batterystats.bin to solve the issue is still considered a myth, there are users who still find it useful to the date.

  1. Use your phone as you would, until it fully discharges and turns OFF. Then turn it back ON and wait for it to turn OFF again automatically. What we are doing is, we’re making sure that the device’s battery is levelled down completely to zero.
  2. While your Android is switched off, plug in the charger (Use a genuine OEM charger) and let your device charge to FULL.
  3. Now unplug it, and power ON your device. There are high chances that your Android will still not show that it has been charged completely. So grab the charger, plug it in again, and let it charge all the way up to 100%.
  4. In case the charge level gets stuck at a certain percentage, you will have to refollow the above steps and repeat them until it finally shows 100% charge.
  5. Once you have achieved that, download the Battery Calibration app from the Play Store.
    Battery Calibration
    Battery Calibration
    Developer: NéMa
    Price: Free+

    How to Calibrate Battery on Android
    Left: Grant root permissions | Centre: Tap on “Start calibration”
  6. Run the app and follow the on-screen instructions to calibrate battery on your Android device. You must grant root permissions to the app for it work.
  7. Once the calibration process is complete, reboot your device and discharge it back to zero. Now charge it to 100%, while the device is powered down.

There is a long list of available apps on the Play Store that could help you calibrate your rooted Android’s battery. But, we personally recommend the one we mentioned above.

Those were our tricks to help you calibrate battery on Android devices. If you know of any more solutions that may prove useful to others, then let us know by dropping a comment below.