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I ran it about four times for each of my 3 batteries. Each time it said "The battery could not be updated. Please return it to your Apple dealer" or something similar. I guess I could try it a few more times... :-/

It has both ZIP and JAZ drives installed. I'll try unhooking those, thanks for the tip!

Well, the IBU that you gave me at least ran on my PB 540 & 540c machines, unlike the other version I had. But despite repeated attempts to revive my 3 old batteries, none of them are retaining any kind of charge large enough to keep the machine running without AC power. Too bad. There's a...

I'll try that pb, thanks. On my PRAM reset attempt I did indeed use CMD-OPT-P-R. Pretty sure I have TechTool floating around somewhere.

Makes sense, thanks Bolle.

What's the purpose of the little plastic sliders on the side of the intelligent batteries? They slide off quite easily. I've included pix with/without the sliders for reference.

Thanks Byrd, but still troubleshooting. I zapped the PRAM, no help there; and I tried to disable the startup memory tests, but as I recall that might be an option only on "later" vintage Mac OS'es? I tried it under both 8.1 and 7.5.5 and no checkbox appeared. I don't have any later OS's...

Hi all, Been having the following problem for a few months now. Prior to that, I had no startup issues. Here's my procedure to get my PowerMac 8600/200 up and running: 1) Hit soft Power button on keyboard. 2) Hear normal startup chime and HDD/fan spinup. 3) Watch as nothing, I mean nothing...

Much appreciated ILT! I'll give it a whirl.

Thanks for the info guys. Between my 520 and my 540c, I have three batteries, and I've managed to coax exactly zero hours of useful time out of them. :-/ When I've launched Battery Recondition, it says that it "cannot be used with this Macintosh." So maybe I have the wrong version? Looking...

Hi all, first post on 68KMLA and I'm thrilled to be here. Lots of good and useful reading here! So... I just bought a new-in-box PB5xx Intelligent Battery on eBay, for $60. (yes, waaay too much but I couldn't resist - working PB5xx batteries seem to be really hard to find!) The seller said s/he...