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PowerBook G4 Battery Issues
Posted by: macgeek18 on 2016-05-21 13:50:12
Hey everyone,

I'm having some woes with my 15" PowerBook 5,8.

I bought a replacement battery fron Newertech and just replaced the PRAM battery this morning. The computer will not boot or even run off the battery. It boots fine from AC and I'm typing this from it now. When the battery is installed, it just powers up the fans run full speed and the screen stays black. When I plug in the battery when the machine is on it won't charge and if I pull the AC adapter if shuts off. Anyone haved a good idea what is casuing this? 

Thanks
Posted by: asaggynoodle on 2016-05-28 13:50:31
You should try to reset the PMU/PRAM. It could be holding data from the old batteries etc. 

HOLD: Command+Option+P+R 

While booting up from a complete shutdown. The machine will restart, I usually hold it until it reboots after the second time.

If that fails:

  1. If the computer is on, turn it off.
  2. Disconnect the AC Adapter and remove the computer's battery.
  3. Press and hold down the power button for 5 seconds and then release the button.
  4. Reconnect the battery and AC Adapter.
  5. Press the Power button to restart the computer. 
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