Battery for CMT-71-64R RAM module, HP-71

[J-F Garnier]

It's strange that no reference of spare batteries can be found in CMT flyers or EduCalc catalogues.
It may be that CMT estimated that the lifetime of the battery would be long enough for no replacement needed, since the battery is only used to retain memory when the module is removed from the 71B. They obviously didn't think that some people would still use the modules 20-40 years later.

As many, I'm using my (only) 64K module without battery, and that's fine.

J-F