Steps to Recalibrate Android Device Battery
collected by Jeffrey Sward
 
The following technique is much less intrusive than the "leave the device on until it shuts itself off" method.
 
  1. Turn device on and charge it for 8 hours or more.
  2. Unplug the charger.
  3. Turn device off and charge it for one hour while still off.
  4. Unplug the charger.
  5. Turn device on and wait 2 minutes.
  6. Turn device off and charge it for one hour while still off.
  7. Unplug the charger.
  8. Turn device on and use as normal. Your battery life should now be a lot better.
 
Sabatini, Matthew. "How To Calibrate Your Device's Battery and Achieve Longer Battery Life." Android Authority, 27 Oct. 2013, www.androidauthority.com/how-to-calibrate-your-devices-battery-and-achieve-longer-battery-life-43307/.
 

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