If the controller can go up in voltage you will get more power and possibly more range. Just check your equipment for max voltage. Nissan Leaf packs are easy. Some hybrid packs are around 144vdc and that would make things easy if your controller can except that voltage. So many variables. Good luck.Cool forum. Just picked up 1991 Geo Metro already converted to electric. Needs batteries. Wondering what batteries to use. It had 10 12volt 100ah led acid batteries. Any suggestions? 120 volt system.