@Jambalah,

Unfortunately, my 15" G4 PowerBook 5.8 is the high res model, not the low res model, so that battery probably does not work, or they would not bother listing it only for the low res version of the 1.67GHz G4 PowerBook 15" LCD screen.

It is amazing how much smaller the PRAM battery for the 17" 1.67GHz G4 PowerBook 5.9 is, that I just replaced.

I'll keep looking for the correct PRAM battery for my 15" 5.8 PowerBook, and if I can't find one, I will open up my existing PRAM battery to look at the numbering on the battery itself and try to find just the correct replacement battery, instead of the whole PRAM battery assembly.

Thanks anyway for the link.