I timed it this time. I knew the charge didn't last very long, but I had no idea it was this short. I used to get a full 45 minutes of use before going into sleep mode, but latlely, it's been quite short. Activity level is just surfing MacRumors with no applications open. Brightness is all the way up. This is the original battery however, maybe it's about shot, I don't know. Do you think it's time for a new battery? PowerBook G4 Ti 800 MHz/DVI/15.2"