Just installed a 36 volt minnkota on friends boat. He has two dual chargers he wants to use. Can one charger be hooked to cranking battery and one of the three trolling motor batteries and the other charger hooked to the remaining 2 batteries for the trolling motor. I'm assuming as long as you match pos to neg off of each charger to same on each battery or do I need a quick disconnect between the trolling motor batteries to make this work ?