If I am reading it correctly, the option provided by Dallas @Dallas Joseph is to use the MTH RailKing Battery Charger for PS2 3V loco's that still have 2xAA or 3xAAA batteries fitted to them .
I just plug the "wall wart" into the 110V supply outlet, and then plug the white two pin Molex fitting into the lead of the BCR2??
When charging a BCR2 that is already fitted to a loco, I just wait 60 seconds with full track power on (19-20VAC), and then start pushing the + button on the hand-held remote to get the loco moving, and the BCR is charged in that one minute timeframe......right?
How long would I have to keep the MTH RailKing Battery Charger attached to the BCR lead, to get it fully charged.....one minute, one hour, one day????
Questions, questions, questions.......sorry, but I don't want to willingly damage any of these precious components.
Peter......Buco Australia.