So i was under the impression that these 5th gen were supposed to have a 20hr battery? im just curious, because even after a full charge, the bar still isnt full. and after less than 5 minutes it is down 1/4 of the battery. maybe it just needs a couple cycles? i dont know, but that sure is bothersome. its just annoying really, i havent really had it die on me in an inconvenient time yet.