Jeremy claimed in his first post he had two more batteries just sitting in the garage. So after all the talk he had it right , use two more batteries either draining all 4 at once or 2 at a time. I installed a minn kota precision charger on board and it charges three banks separately and puts out 15 amps per bank, and by only plugging into a 110 outlet. Im not electrical savy but im guessing theres an inverter inside making that able to happen . Sent from my SAMSUNG-SM-G730A using Lake Ontario United mobile app