I have an Aluminum Powerbook G4 17" 1.33 GHz computer and need to replace the PRAM battery. This poses a problem. Typically they sell the PRAM battery/USB board as one replacement because the two rechargeable 3.7 v coin CGL 2430 batteries are spot welded & soldered to the USB board in parallel. The replacement part is 922-6064. When I look for a replacement, all I can find are used parts which mean that the batteries have a diminished life. Panasonic stopped making those batteries in 2005 and I can't find anything comparable. Even the places that advertise new parts say they only have used in the end. Next model up, the 1.5 GHz Apple made a battery pack that can be replaced. NewerTech makes that replacement. I would like to replace the batteries on my present USB board - new ones can be soldered or a plug can be added, but I have run into these problems. Those coin batteries are not available and I know the voltage, but not the amperage of those coin batteries that were used. NewerTech can't tell me the voltage/amperage of their battery pack for the newer version Powerbooks, so I don't know if jury-rigging one of those packs would work with my version of the Powerbook. I can't find Apple's specs anywhere for the voltage/amps that should go into the PRAM/USB boards in the 1.33 model and the 1.5GHz model so that I can figure how to do this repair modification. The USB boards for both models look the same, but I don't think that they are, but what is the difference? Anyone have an idea how I can do this modification to add PRAM power to my USB board?
Powerbook G4 17" 1.33 GHz, Mac OS X (10.5.7)