artsar
+1y
I rewire my batteries from 36V back to 12V and charge them that way. I put one cheap charger on them and let it go. I found that I was charging them once every 2 weeks or so, but I have cheap batteries and I tend to play with the car.
Also I find my rewiring them it allows you to use the car if need be. I remember a few nights where the car would be in "charge" mode and I would get a call and needed to leave ASAP, with it wired to just lower voltage atleast I can get the car up and drive rather than have to wire the batteries back in before I leave.