about 71B's CMT 64K RAM modules

[Garth Wilson]

I believe I took the battery in mine out a few years ago and just left it out. It was 20+ years old and still good because it never got used since the 71's own batteries keep the memory alive as long as you don't unplug it, and I wondered if it would leak before the next time I check (which might be in another 20 years). As long as you never need to unplug the module, I think you can just go without its thin battery.