Repair of an HP82004A Power Reserve Pack

[TomC]

Hello:

I too have wondered about the internal circuitry of the Battery holder - I'm surprised there does not seem to be a schematic online. Given time, I may sketch one out.

During normal operation, the LED illuminates only when the battery pack is inserted. There is no mechanical switch, so I believe the LED is illuminated when the battery pack is being charged. I hope that someone knows the cross reference for the transistor in that package.

Regards,
TomC