I do not believe that I can use a BCR-2 because the engine now uses a 2.4v battery, do to the PS2 upgrade. I am going to get BCRs for some older PS1 engines that I've acquired.
As for the engine, I did recharge the battery for 6 hours. It did not work. Engine still conks out when using the horn, or when going forward or reverse for a few seconds. Could be the speaker or something else shorting it out? I'll let all know what the techs have to say about it.