Well, I just couldn't leave it alone. I did my research (Thanx to Andy, Nate, Caddiemaster, and quite a few others) and paid attention, and made the jump to 48 VOLTS. The controller was already rated for the voltage, and the rest was easy.
First, I visited Sam's club for 2 fresh 6v cells and a smart 12v charger. Charged the 2 new cells together as a 12v unit:
Placed one cell under the driver's seat and the other out back in the passenger side bagwell. Needed to make some new cables with the torch and the solder pellets. I improvised a safe work area in my shed at the campground:
Once the wiring was complete I took it out for it's first run. I am moving flat out FTTF around this curve, and as you can see, she is flying!
The torque gain was quite impressive
I am VERY pleased with the performance gains. Torque is up, top speed is up. Can't ask for more than that!
2 new batteries $130
New 12v charger $50
3 new 4g cables $0 (leftover from previous project)
Ability to outrun any cart in camp - PRICELESS