Does your Android smartphone suddenly turn off? Does the battery indicator change abruptly from one percentage to another? You probably need to do a battery calibration.
Battery calibration is a procedure by which you reset the way Android “sees” the percentage of battery power. Its implementation is recommended when problems such as those listed above (sudden shutdown of the phone or changes in charge percentage) occur and when a new ROM is installed on the device. However, it is clear that this is not a miracle cure. If the phone’s battery is faulty or has suffered a physiological reduction of its autonomy, there is not much to do, you have to act on the hardware level replacing it.
Did we understand each other? Well, then I would say do not waste any more time and see in detail how to calibrate the Android battery. The tutorial is a bit ‘for all smartphones (and tablets) equipped with the operating system of the green robot. If the first procedure does not give the desired results, try the others illustrated below. Cross your fingers so that you can solve all the problems related to the autonomy of your device. Good luck!
Calibrate the Android battery – Method 1
The first step you need to take is to download your smartphone until it turns itself off. Next, you have to turn the phone back on and if it stays on, you have to wait for it to switch off again by itself. Repeat the operation until the battery charge reaches its minimum (to the point that when you turn the smartphone back on, it will turn off immediately after the first screen).
At this point, put the device in charge, when turned off, and wait until the battery indicator reaches 100% (or the charging LED turns on). Then let the phone charge for another two hours and ignore any messages that appear on the device screen. I recommend, this is an important step but you do not have to exaggerate: spend two hours, unplug the phone or you may damage the battery.
Now remove the battery from the smartphone for 10-15 minutes and then reinsert it. If your smartphone does not allow you to remove the battery, keep the device off for the same amount of time (10-15 minutes).
When the operation is completed, put the phone on again and wait a few minutes (5-10 minutes should be fine), then turn on the smartphone, wait for the main Android screen to be usable and unplug the terminal from the charger. This way you should be able to calibrate the device battery.
In the unfortunate event that battery problems persist, repeat the battery calibration procedure. Otherwise, try the alternative method shown below.
Calibrate the Android battery – Method 2 (requires root)
If you have not been able to calibrate the Android battery by following the procedure illustrated above, try this other method, which however requires the presence of the root. If you do not know what I’m talking about, read our tutorial on how to root on Android and evaluate whether to continue or not.
Have you decided to move on? Well, then immediately open the Google Play Store and install the Battery Calibration application on the phone on which you want to perform the battery calibration. Next, leave the device on and let it unload until it turns itself off. When the power is turned off, turn the smartphone back on and let it turn off again: you have to get to the point where the phone goes off after the very first screen (a sign that the battery has run out completely).
So connect the phone to the charger, when turned off, wait for the percentage of charge to reach 100% (or wait for the charging LED to turn on) and leave the device charging for a couple of hours more.
When the operation is completed, turn on the smartphone (if in the meantime you have not already turned on by itself), start Battery Calibration and grant the root rights to the application by pressing the Grant button. Check then that in the initial screen of the app the percentage of charge of the phone is 100%, presses the button Battery Calibration and disconnects the charger.
If the charge percentage is not 100%, reset the phone to charge until Battery Calibration indicates that 100% is reached in the current charge field. Then press the Battery calibration button and unplug the charger.
Finally, restart the phone, let it completely unload and charge it again until it reaches 100% charge. At the end of the operation, you should have been able to calibrate the phone’s battery.
Attention: the calibration procedure must be performed only in case of real necessity (since downloading and fully recharging the battery can negatively affect its performance). If the problem is not resolved after repeating the procedure a couple of times, consider replacing the battery and/or bringing the phone to service.
How to increase battery life on Android
The calibration of the battery has been successful but the autonomy of your smartphone continues to be uninspiring? In this case, you have to optimize the energy consumption of the device by acting on the apps and system settings.
Do you want me to give you some practical examples? Well, for example, you could install an application like Wakelock Detector and find out which apps “wake up” the phone by consuming energy; you could install a less resource-hungry launcher than you usually use and, more importantly, you could delete all those applications running in the background but you do not need them anymore.