OK Gordo I converted to 48v today cart was awesome for about an hour. Ran it about a mile to a friend house all was good. Headed home and as I pulled in the drive smelt something burning. Flipped the seat tha negative post on the last battery had melted terminal and the bolt was on the next battery over and melted the battery case. I guess I'm going back to 36v for now any idea on what happened? Or was it just to many amps from a 500 Alltrax controller?