After I installed 10.3 on my iBook SE 466/320 MB, my battery times dropped a bit, and was down to an hour. It had been dropping steadily over the past few months, not related to system updates at all. I looked into it and found a good note on batteries using the Apple Care channel in Sherlock. Basically I had to re-calibrate the battery by draining it so much that the computer goes to sleep and then charge it fully. I used a small application named Xbattery to monitor what happened. When I began, I had a capacity of 1.276 Ah, then after the drain it reset itself to about 1.7 Ah. As the battery is supposed to be 1.875 Ah, I gave it another try, ending at 1.4-1.5 Ah, so the next day I tried again, and now it is up to 1.803, which gives me about 2.5 hours again. I don't know if that helps you, but I certainly got a new Mac out of it! Cheers, Kim On 30/11/03 0:38, "Richard McKay" <richard.mckay1 at virgin.net> wrote: > 3. My battery times (with 2 different batteries that were giving over 3 > hours before 10.2.8 and suddenly 10 minutes life span after 10.2.8) still > have not increased back to normal no matter what I do...