I have instructions to recharge the magnets using three car batteries. I was told by another modelt'r that that could damage the coils. He suggested using a battery charger instead. Any comments, suggestions or otherwise help would be appreciated. I have just "refinished" my 17 roadster and am getting ready to start on a 25 Canadian fordor. Terry Hoyt 17 Model T roadster 25 Model T fordor 37 Ford fordor deluxe