Some iBooks circa summer 2001 at least had bad batteries. Even if you don't have AppleCare extended warranty on your (apparently > 1 year old) iBook, a new battery might be covered. With AppleCare, they just ask if you've tried a Power Manager reset, etc before they'll give you a free replacement. Failure on mine involved charging to ~"4 hours", then quickly dropping to ~3, then ~2 then ~1, then a sleep or shutdown without the usual warning to plug in quick. But it started not unlike your description. On Sun, 2 Mar 2003, Per Brodersen wrote: > I have my iBook (November 2001) for 14 months now and the battery is losing > quickly its power - on Mac OS X 10.2.3 without any hardware additions (more > RAM etc.), now I get only one hour of battery life according to the battery > display - although I can run some time on "0%". > Have reset the Power Manager - obviously, to no avail.