MPH-II Battery

Lose of power, reprogram PI again, replacement battery? anyone know where to get one, is it solder replacement,or another way.

couldbe a bad battery but before unter the battery has a jumper A B C
the jumper must be in A B to maint info

I have cut out and soldered in replacement batteries on these boards.it is a 2.4 volt battery.I got it from interstate batteries part no NIC1410 its not always pretty but its better than replacing a board that is working fine.

Thanks NOTIME, will check and let you know. PGL, thanks for place and part#

Jumper was on A-B, looks like a battery. Thanks all.