I've look at Basspro.com and found a few different on board chargers. They list Minn Kota, Guest, XPS(Bass Pro's). I was leaning toward a two bank Guest. Are they a good unit? The boat I purchased didn't have a on board charger, previous owner must of kept it. I'm starting to release that upgrading the boat to a true Bass boat is more then just the cost of the boat. A friend stated that owning a boat is like a black hole, always throwing money into it..