Hi everyone. I have a PowerBook G4 with a fairly old battery (not sure exactly, maybe around two years). Recently, the battery went from a maximum of holding about 16% (compared to original) charge to 12% to not holding any charge. If the computer isnt plugged in, it wont even stay in sleep mode, it will just shut off. When I click on the little symbol in the upper right corner of the screen, it says Battery is not charging even when it is plugged in. Ive had really old batteries before and they would barely hold any charge, but never before has it said Batter is not charging while its plugged in. Im wondering if there is any way to tell if this is just a bad battery, or if perhaps something is wrong with the way the computer charges the battery. Id like to order a new battery, but I dont want to pay a bunch of and have the computer not be able to recharge it. Any advice? I dont have any spare batteries to try, obviously, or Id just plug those in.