On a loader at work we have 2 batteries tied togeather. The positve cable is on pos. side of one battery then there is a jumper bar that goes from that battery to the other pos. side of that battery then the positive cable runs from that. The Neg. cable (only 1 cable ) runs from the neg post of battery, The 2 negatives have a jumper bar on them also and just the one neg. cable running from battery. I hope i have explained this clear enough, I know it sure has me mixed up!! How would i hook up a battery charger to this? Would this be 24 volt? Is that what you would charge this, 24 volt?