Hers is a gen7 nano that got dropped on the power switch corner so it doesn't shut off. Its funny cause I put an aux plug in the left pocket and it charges fine there. Plug it into the USB in the bag and it'll play a 3-4 hrs. then die. On the rented wing the USB was in the trunk. She plugged in and road all day and it stayed charged the whole time. I'll see if it'll charge a cell phone or something.