View Full Version : Powerbook G4 turns off when AC Adapter removed

Feb 19, 2010, 01:46 PM
basically, my battery is 100% charged per the menu bar on the top right. but, when i unplug the ac adapter, the powerbook shuts off immediately.

i have a new 3rd party battery. it worked perfectly fine and then...baaam!!...now this.

i called apple care and they said that i might need a new battery. i don't believe what they are saying since this is brand new and it used to work like a charm until as of recent.

any help?

Feb 19, 2010, 02:07 PM
Usually if you have any laptop on AC and you unplug the AC, it's the battery. It may say 100% health, but the numbers can be wrong.

Feb 19, 2010, 02:26 PM
interesting. even if i bought this battery no too long ago. i also checked my istat and the battery health is at 85%, 65 cylces, 99% charged.

when i unplug the AC...poof!! the laptop shuts off immediately.

so, i dont think its the battery. any other suggestions on how to fix on my end?

Feb 20, 2010, 10:11 AM
Try borrowing a battery from a friend, and test it.

Feb 20, 2010, 01:31 PM
Just because the battery is new doesn't mean that it can't be bad. Test it with a different battery if possible, then contact whoever sold you this battery.