Kinga Krzeminska/Getty Images If you’re not using an iPhone, chances are you’ve got an Android phone in your pocket. Android is Google’s mobile operating system, and it powers a range of phones like the Samsung Galaxy and Google Pixel. One thing nearly all Android phones have in common is their lithium-ion battery. These batteries are powerful and efficient, but only when they’re healthy. As they age or wear out, you might notice your phone losing charge faster, taking l...