Samsung S4 Battery Drain

I hate to say it but back up everything you have on it (between KIES and Google you should get just about everything but some of your app data- scores/progress in none-"play games" cooperating games, sign-ins, etc.), and do a factory reset. Your battery calibration algorithm is either off or it is not dumping cache like it is supposed to when you reboot the device; if you're rooted you can clear the cache manually but if not rooted the only fix I know of is a factory reset.

sorry (I hate when I have to backup and restore)