a bunch.. (2) A3000s in "production" mode (one an 040/25), plus a couple more "out back" (one a UNIX model), an A2000 w/ flickerfixer and grandslam, and my first A500 ca. 1989, plus a CD32, and a mess of parts that could probably be wangled together to create another one.. I'm actually thinking about selling some stuff soon, so.......
This week I've been replacing the original 3v Vartas with the lithium battery hack.. the original *20 year old* battery from my 040 box looked brand new, no signs of leaking, but I figured I was puching my luck. The one from the A2000 was a little bulgy on one end, but not leaking. Tip: run (or store) them upside down - if the battery leaks the worst thing it can do is hit a card (in the A3000), or the bottom of the drive tray (in the A2000), or maybe just drip on the inside of the top cover.