I have been using mine on battery, but I am getting tired of recharging it. When I use it to control/monitor my music server I like to have it sitting on the table with cover opened so I can see what is playing, time left, etc. But that really drains the battery. The alternative is pick it up, open the cover, check whatever, and then close the cover. That extends battery life, but is not very user friendly. Today I added an extension cord to the USB charger, and that lets me run it off AC, so I can keep the mpod program active all the time. But it looks clunky with the cable dangling from the top. Obviously, we need wireless recharging for batteries.