I just came back from a new customer. He has raymond pallet jack Md # 10F40L, this looks like it came of of Noah's Ark.the capacity tag said that it is 24 volts. It has two sets of six volt (golf cart type batteries). The way that it is wired is two six volts in series,but then the two sets are in parrellel to the truck. Someone just replaced the batteries. I need to know if this is 12 volt or 24 volt system. I think that the batteries should be 12 volts, then if would be correct. He keeps telling me that the six volt batteries are what it always had. One other thing is that his charger is 24 volts, but has a jumper to plug into both batteries.The jumper is connected in parrallel. This just does not look right to me. Any help would be apreciated. Ralph