I get 24hrs plus when never connected to GPRS (2.5G), using stock voltages, using wifi here and there to check mail, check for updates on facebook, etc, no calls, no sms, coulple games, when I'm bored at work, maybe some light reading in the PDF Viewer, but although 24hrs is a lot what I don't like is that, it could be less with constant use because battery level drops fast, but I think I'm just paranoid because with other devices (old old ones) u can't see the % of battery left, but with this device you have ways of keeping a good eye on it. I'm satisfied with my battery for now though. I'm satisfied with the device on the whole.