Question about Apple iBook G4 14-INCH Series M7701LL/A Laptop Bat Mac Notebook
I'm baffled. I have a g4 ibook that works off the ac power supply but it does not work off the battery. The os indicates 75% charge and the system profiler knows when the battery is in and when it isn't. But ya unplug the ac cord from the wall and it goes black as night immediately. Tried the pmu reset to no avail. Been going on for a year. I had the case apart (to replace hinges) a week ago but found nothing loose under the hood. I have to admit it is driving me slowly insane.
Try removing the two screws by the battery connector.
I bought a dead ibook G4, when I got it the first thing I did was pressing the battery status button on the battery, it was dead allright. I figured it been stashed away for a while and bled out. So I hooked it up with the power adaptor, the connector turned orange telling me it was charging the battery, but the battery's indicator remained dead. I took it apart and found that someone less cunning put wrong screw (too long) in wrong place, namely by the battery connector shorting the anode on its' circuit board directly to the chassis. So when I took off the backside the battery indicator lit up.
Also checked the motherboard and found out that the battery connector didn't put out a charge voltage unless there is a battery to talk to, so it only shorted when there was a battery in the compartment. This seems a fit explanation for why yours won't turn on while there's a battery in the compartment :)
Posted on Feb 07, 2010
Replace your battery.
When a battery is dead, the charge level it reports is meaningless. When a battery reports a charge but still won't keep your machine running for more than 30 seconds, it's dead.
The fact that the OS knows when the battery is present or absent doesn't mean anything, as it it just reading the presence of the battery interface board.
Posted on Oct 28, 2009
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Posted on Jan 02, 2017
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