71B MultiMod: MEMORY LOST when changing batteries?

[mfleming]

Dave, I did add a warning to the documentation (though obviously I should have posted it as well!) The MultiMod remains active for 2-1/2 minutes after you turn the 71B off before it goes into deep sleep mode. This is to allow you to flip the 71 over and connect a serial cable for programming. Once in deep sleep the processor is stone cold until awakened by the Daisy-In signal.

If you're going to swap batteries then wait a few minutes after turning it off. I usually replace one battery at a time to minimize disconnect time. I just tried a little test - pulled a battery for 10 seconds, no loss, 30 seconds and I did get a memory lost message. Obviously safest when the charger is connected, but for those without, one quick battery swap at a time.

Memory lost with the J2 power jumper removed is a puzzle. I'll try that out for myself to see what happens, but the processor shouldn't present a power load with the jumper removed.

Thanks for the report, others will benefit from the warning!
~Mark