iPad Air 2, about a year and a half old, without issues until a few days ago. I noticed the battery would drain a little faster than what it normally would, but hadn't really had time to really observe it. Today ( Saturday) I had that chance and something very funky is going on. For example: I have dropped 3% just typing these 5 lines. The battery % will randomly drop double digits within a minute or two (i.e., drop from 44% to 20%), but restarting the iPad will restore it back to 44%. I rarely ever leave any app running and have location services moderately restricted. Is my battery on its way out or is possibly something else going on?