3 Replies Latest reply: Jul 11, 2012 8:57 AM by Knucklesmac
johnthebuilder Level 1 Level 1

I see an icon showing it is plugged in and at 0%.  Another time it showed an "X" through the battery icon.  I updated the firmware with the battery updated 1.1 and still nothing.  The updater itself can't find the battery at all. 


Maybe I bought a defective battery???


Thanks for helping!

PowerBook, Mac OS X (10.5.8), 1.25 GHz Power PC G4
  • Knucklesmac Level 4 Level 4



    Is this replacement battery band new? Does the power adapter end change from green to orange when plugged in?


    I would rest the PMU first and see if that resolves the problem. To do that follow these instructions:



  • johnthebuilder Level 1 Level 1

    Thank you for your advice.


    The battery is brand new but is not an Apple battery so I may have bought a lemon on Amazon.


    The charger does change to orange when plugged in.


    The battery has charged while installed.


    I reset the PMU following the directions on the webpage you suggested.


    I still see the battery icon and a 0% indication.

  • Knucklesmac Level 4 Level 4

    Very odd,  as if your power adapter has gone orange it must be charging the battery.

    I assume you have left it for a while on charge? if so have you also tried powering the PowerBook on the battery after it has been left on charge for a while?


    But if it doesn't work then I would agree, it sounds like a dud battery and your be best to exchange it.


    Best of luck