I am wondering if I have a battery problem or if this is normal. I charge my n800 until it's fully charged, and it says 7 hours of use. I then use my tablet for about 1:45 hours and it starts giving me low battery warnings. What I was using it for during that time was some web browsing, playing a game, and chatting. After about 30 more minutes the low battery warnings become quite frequent. I have never waited for the battery to go dead before. My n800 was used altough in perfect condition so I'm not sure how much the previous owner used it. Is the battery just getting old, or is a little over 2 hours all I can expect from it? Or maybe it will go longer and I should just ignore the warnings? Also one other thing. I might buy off ebay a usb charger for my internet tablet that plugs into the charger port on the n800. Does anyone have one of these and do they work? THanks