Ive had my ibook g4 for a year now. i just upgraded the ram to 512 about 2 weeks ago.
last night i was using it on battery power and all of a sudden it just shut off for no reason.
ever since then when it gets down to about 25 percent battery power it warns me that it is running on reserve and then shuts off right after the messege is displayed.
prior to that, it would operate on reserve untill the battery power went down to zero which would take another 15-20 minutes (i dont normally let it run down that low)
is there any reason it might be doing that? did the battery short out or something?


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