I've started to pull batteries from the Macs I put into storage, but for the ones I don't use much, I've had to be a bit on the careful side. My problem is with SEs with soldered batteries. I'm not the handiest with the soldering iron on this forum so I either swap the boards with FDHD boards (which have a holder) or just clip the batteries for good!

I'm thinking of replacing all my PRAM batteries in the little squad of Classics that I have in my closet. All of their batteries were installed in December 2005 and I know the batteries themselves are even older than that. I did buy a bunch of PRAM batteries in bulk a few months ago so they can be swapped without a problem.