How to calibrate the battery on your Android phone or tablet

Battery problems are one of the biggest concerns for smartphone users which is why we offer many useful tips and tricks to solve battery drain problems. If you notice that your battery performance and duration has decreased, it could be time to consider calibrating it, before resorting to buying a new phone if your battery isn't exchangeable like the Nexus 5. Today we will explain in detail what calibrating the battery of your Android actually does and how to do it!

Your battery might start slowing down and acting up: you should calibrate your battery!  

First of all, if you have had problems with the performance of your battery, you can consult our 16 tips and tricks to extend battery life on your Android smartphone. If you notice that the performance continues to decline, then it’s time to try to calibrate the battery. One of the most obvious signs that it’s time is when your mobile battery drains quickly or the device won’t charge.

Users that have encountered these problems may think the battery or device is damaged. This may be the cause, but before doing anything drastic, we highly recommend trying to calibrate the battery properly.

What does it mean to calibrate a smartphone?

The Android operating system has a setting called Battery Stats which indicates the battery capacity, when it is full or empty. The problem is that it sometimes become corrupted and starts displaying data that isn’t real, which causes the phone to turn off before reaching the 0%. The process of calibrating the battery would correct the information.

How to calibrate Android device battery without root access

Method 1

First you must check the capacity of your battery, which you can see on the battery or by searching for its specifications on the internet. Check our hardware section for your device.

CurrentWidget: Battery MonitorINSTALL

This application will show the battery charge in milliamps (mAh). Charge your smartphone for the duration of time needed until you reach the total milliampere amount indicated for your specific battery.

When the required amount is achieved, turn off the phone and restart it. The battery will now be charged to 100 % and in theory shouldn’t cause any more problems.

Current Widget: Battery Monitor will show your battery charge in milliampere. 

Method 2

Fully charge the battery with the phone on and when the phone is fully charged, unplug the charger and turn it off.

When your phone is off, plug it into the charger and let it charge to 100% again. The green LED light will indicate when this is done.

Next unplug the charger, turn on your phone and set the option to ensure that your screen doesn’t turn off, if you have this option. Then reconnect to the charger and wait for it to charge again to 100%.

Once loaded to 100%, unplug the charger again and do not load until the smartphone turns itself off after reaching a 0% battery level. Once off, fully charge it again and it should work properly. The screen setting can put back to normal again (meaning turn off after a certain amount of time).

How to calibrate Android device battery with root access

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Method 1

First, install the Battery Calibration app :

Battery CalibrationINSTALL

To start, connect your device to charge until the battery reaches 100%.

Then open the Battery Calibration app and check the number of 'mV ' that are next to the percentage, a number that will continue to rise. If the number continues to grow even if the battery is at 100 %, continue to charge the phone.

When the numbers stop rising and the battery is charged to 100%, press the Battery Calibration button and then restart the device. The current level will be recorded as the point of maximum capacity and the old information is deleted in the Battery Stats when a new one with the correct data is created.

If this method didn’t work, try method 2.

Method 2

Go into recovery mode on your Android and navigate to the Advanced section where you will find the "wipe battery stats" option. This will erase any previously made ​​calibration either by the user or when having installed a ROM .

Second, you have to fully drain the battery and then connect the phone to the charger. Charging must be carried out without interruption and with the device off.

When the load reaches 100%, turn it on again without disconnecting from the charger and open the Battery Calibration application. Click on the center button, which will prompt SuperUser permissions to pop up that you will have to accept. Shortly after a message saying ‘calibration succeeded" will appear. Press OK, unplug the device from the charger and close the application.

That's it. Have you tried any of these methods? Do you know an alternative way to fix battery problems?