Ever since KitKat update, my Samsung Galaxy S3's battery is drained in less than 4hrs, with minimal usage. I have managed my apps, and battery usage to ensure it wasn't that. Then, my 3rd party car chargers (x2) no longer work, my wall chargers (x3) no longer work! I have one SG wall charger that works, but does not help me if I am traveling. It has put me in a huge predicament with my job and family. Help!