Luckily, the battery acid only damaged the logic board. I was able to salvage the memory and the ROM SIMM, though. And the battery was? You guessed it, a Maxell. Not sure about the Classic II. I looked at the logic board, and there is very little capacitor leakage.
I got them from a guy that's local to me. He emailed me and asked me if I wanted them. If not, they were going to the local eScrap center. I had a craigslist ad up looking for "old, unwanted Macs".
2.5 i5 Mac Mini (Late '12), Dual 1.25 MDD, 1.42 eMac, 5500/275, 7600/120, 8500/120, 7100/80AV, 6100/66, LCII (w/LCIII Board), PB 520, a few PCs, and a 8GB Nook Tablet. More in my link --------->