I am a little disappointed in the battery for my 7th gen iPod nano. Apple says it lasts 30 hours but I think I am on track to get about ten. I do have EQ settings on and the volume is maxed out half the time as I listen to books on the train, which is a loud environment. With those in consideration, would a shorter than advertised battery life make sense? To get 30 hours I would image the reviewers used no EQ, halfway volume and no real changing of tracks and interactions with the player? I am just wondering if any other nano owners have experienced something similar.