1978 ezgo 3 wheeler electric

[ccs122657]

I have an old 78 ezgo electric cart, problem that I'm having is it just runs half speed when pressing the pedal all the way down. I have 6.5 volts on all 6 batteries. But when I check pack voltage I'm only getting 20 volts, even after its fully charged. Why is it I'm getting full readings on the 6 batteries but can only get 2o volts after its charged. We put a new resistor board in it because the copper studs was messed up. How do I get 36 volts back in a old ezgo?

Thanks
Terry

[Cartmaster]

You are unlikely to get an answer in the gas Yamaha forum! You need to post in the electric Ezgo forum.

If your picture is how it is currently wired, I suggest you wire the full pack in series. There seems to be a lot of wires randomly connected to various places that do not make any sense to me. There is one battery post not even connected to anything as far as i can see. I think you need to find the relevant wiring diagram and re wire this thing from scratch.