LISA 2/10 RTC battery-backed Static RAM (SRAM)?

[bmwcyclist]

Can I add a modern battery solution to my 2/10 to hold time and "date"?

[sigma7]

Can I add a modern battery solution to my 2/10 to hold time and "date"?

In the late '80s Dafax was selling a made-to-order COPS battery backup for the 2/10, but I never saw one. It used NiCd like the ones that leak in the 2/5.

IIRC, the 10 pin header on the 2/10 I/O Board has the +5 Standby voltage, but no ground, so there isn't a really trivial way to connect it.

As long as the Lisa is connected to AC power, the time should be retained, so if using a power bar to eg. turn off peripherals, perhaps you can power the Lisa separately.