latest pickup: a very obscure Microsoft product -- the PCjr BOOSTER!
@vwestlife @tubetime @compu85 Ah, they're all "Compact Macs", but I hadn't realized the first ones used a different battery. Though, the 3.6V ones aren't just in most Compact Macs; they're also in most (all?) other 68k as well as 601 to G3 PowerMacs (at least, I'm not certain when they stopped).
TL;DR: Get the batteries out!