I just bought a Lester (sp?) 48 volt charger. 200 delivered. One of the reasons I have been holding back on upgrading and elec. is the 450 price tag I have seen on these chargers on e-bay. I have an old Westinghouse, but I don't know.
Speaking of Westinghouse carts and battery boosts, I have seen a few of these carts with a toggle switch on the dash labeled 'boost' or something similar. I have looked under the seat, there is not extra voltage, but there is an extra solenoid. Haven't figured that one out.