Lithium Battery CMT 64Kb

[KimH]

Hello all 71B friends

Recently returning here to see what is there for the 71B, which is my favorite when it comes to Mods - I have a stack of working "gutted" 71's (it almost always start with a battery acid clean up) traces resoldered and so forth (no pun on FORTH).

I play with the signals/bus to make the unit do things it wasn't really planned to do. The most obvious to Daisy chain modules on breadboards, just for fun, learning how the bus handles.

Next project is to build a sort of mini I/O - a mini 82166 with 8 bits through a latch - simple, but fun.

BUT

I have one of the great CMT 64KR Memory Modules, the one with the tiny Lithium BackUp battery.

Amazingly it still carries a charge of 3,2 Volt, but for how long.

Does anyone know where this battery can be found - purchased?

ADD 1: I found a link with a picture from Patrice



Best regards

KimH