I bought a spare charger for a Currie EcoRide (24 volt 2amp charger). I was hesitant about it (there is a fairly long thread about it somewhere around here) but got one for around $40 instead of the $150 that the dealer wanted. The XLR connection has three pins but only two were in use on the original one so I wired up the spare the same way and it works fine. In fact, since it's 4 amps, it seems to charge quicker but not so fast that I worry about it.