I recently converted a 36 volt EZGO electric golf cart to 48 volts with a 800 amp GE controller, 2 guage wires and a custom built motor. I can creep nice and get to 32 mph with 10 inch tires. its a nice setup. I am about to go to 72 volts boost on command to a switch. I'm planning to put 2 12 volt batteries behind, then direct wire 1st to solenoid then to motor directly coming from a toggle switch. Has anyone tries a setup like this?