After coming home and getting the boat squared away, I accidentally knocked over a pile of Bassmasters and one of them fell to the side and opened up to a page where Larry Nixon discusses batteries and charging. (April 2003 page 75 Volume 36 No4) Try to read that article first. The article clued me in on something I already knew but saw in a different light. It brought out the fact that even though you have a state of the art on board charger, it was not enough to keep your batteries up to snuff. After applying what I read to my situation discovered that what he mentioned in the article was 100% correct. This prompted me to do a little more research and I did come up with some more information that was just scanned through in the article. The 2 main topics you should pay attention to in the article is equalization and battery charging voltages and currents . I hope this will answer any questions you may have had regarding batteries. If you have any questions that I may be able to help you with I will be more than happy to reply. With the electric lakes that we fish in New Jersey, battery management is more than key to a successful Tournament or fishing day!