Yeah, 6 hours seems a bit short but having owned the N810 for a long time, I find that 6 hours is plenty (I never even get close to running it down). I never find myself on my tablet for 6 consecutive hours and it puts itself to sleep promptly. Perhaps that's just me, but this has never been a concern. But I agree, more is better. Hopefully there's a spare battery option, or bundled charging cradle for quick and easy charging when resting the device down.