4.5v lithium battery?

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Hawaii Cruiser's picture
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Joined: Jan 20 2005
Posts: 1434

Hey, has anyone come across a 4.5v lithium battery to replace the old square PRAM alkalines used in so many old macs?

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themike's picture
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Joined: Jul 21 2004
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I just make one with 3 1.5v b

I just make one with 3 1.5v batterys in series. Its easier than trying to find one of the original ones.

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Hawaii Cruiser's picture
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Joined: Jan 20 2005
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double the life?

Yep, I noticed Tom had a guide earlier with your same idea:

http://www.applefritter.com/node/3240

Would three AA lithium batteries still give twice the life or more of one of the 4.5v alkalines?

macmedics's picture
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Joined: Jun 9 2005
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RAYOVAC 4.5 volt alkaline battery

The battery you're looking for is the Rayovac 4.5 volt battery and can be had for $10.79 (including shipping) from http://www.macbattery.com. I have not priced three AA lithium batteries, but that might be more than $10? I've seen folks use other types of batteries, and since they are in use for so long, you want insure you're not going have one that will leak.

Hawaii Cruiser's picture
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Posts: 1434
Good point

I've got a couple of Powermac 6500's and a 6400 with matching monitors. They make great computers for kids so I thought I'd try to sell them that way. I just wish I could sell them knowing the batteries aren't going to go out in a year or two, but I hadn't thought of leakage. That's a good point. The alkalines are probably the safest way to go. I wonder why the battery manufacturers didn't notice that there's a market there for 4.5v lithiums.