Het all, i have been having this problem for awhile, i have a PowerBook G4 1.67 superdrive 17" 120gb harddrive. The problem i am having is that it say Battery is charged and stays at 96% But when i unplug The mac from the Charger the monitor turns off and i cant see nothing or do anything with it, untill i turn it off and plug the Charger Back. I have tried Clearing the Pram but that did not work. Please help me Thank you all. Have a nice day.