How to Calibrate the Battery on an Android Device
Battery calibration is a topic that confuses many people. Many people are unsure of the steps that are required to calibrate a battery. In truth, battery calibration is a very easy process, and everyone should be able to follow the simple steps. It is an important process, especially where cheap Android tablets are concerned, and it should not be delayed.
Step 1 – Use Your Device as Normal
When you buy a new phone, you will probably be shocked at how bad the battery life is. If you do discover this, don’t panic, as it gets a lot better. Use your new phone for 7 to 10 days. You don’t have to worry too much about how you use it or how you charge. The important thing is that you get the battery up and down, from full power to low power, a few times through the 7 to 10 days period.
Step 2 – Use the Device Until the Battery is Flat
After the 10 days have passed, run the battery in your phone all the way down, literally to the point of failure. There are a few things you can do to help this process along. If you’ve got a torch app for example, you could turn that on. That will burn quite a bit of battery. You might want to turn on GPS, Bluetooth etc. Take whatever means are necessary to drain the battery.
Step 3 – Remove the Battery for 10 Seconds and Replace
When your phone turns itself off, take out the battery and wait 10 seconds before replacing it.
Step 4 – Charge Overnight, While Off, for 6 to 8 Hours
When you replace the battery, charge your phone up overnight for a good 6 to 8 hours.
Step 5 – Gain Root Access Using VISIONary
You will need root access to complete the next stage. An easy way to get root access on a lot of phones at the moment is to use VISIONary. When you run the app it will give you the option of rooting your phone right away and an option to run it at boot. What this app does is gives you a temporary root. It’s a good thing that it is temporary. A lot of people panic that they might damage their phone if they apply a permanent root, which you can do if you’re not careful and don’t know what you’re doing.
Step 6 – Delete/ data/system/batterystats. bin.
After you’ve got root access there’s a few different options you can take. The way I like to go is with root explorer. Use root explorer to browse to/ data/system/ and delete the batterystats.bin file. Android will then write a new version of this file to the folder. After this is done, let your phone run down the battery as normal.
Another way to do this is by downloading an app called Android Terminal Emulator. This app is free and is available in the Google Play Store. Open the app and toggle the keyboard on. The get root, type su and press enter. A super user request will pop up. Allow access. We now have access to the necessary file that we need. Now type ‘rm/ data/system/batterystats. bin’ without the quotes and press enter. This will delete the batterystats.bin file for you. Simple as that.
Step 7 – Full cycle for 2 days. Down to 1 % Each Day.
Now unplug your charger and try to use up the battery right down to the point where it’s going to turn itself off. Then simply continue using your phone as normal and hopefully you’ll see that your battery life has improved.