Just bought a brushless cat that runs off 18 cells. But it is hook up with 1 dean plug. batterys are split up in two 9 cell battery packs and hook up with one dean plug for chargeing. They do unplug and plug up on the other end. I only have a 10 cell charger. how can i fix them to charge one at a time and be able to hook them up with the 1 dean plug that is in the boat without takeing the batterys apart and resoilderning them everytime. As you can tell i'm new to electric boats. Please help....