[tsubaki]

I agree with MJ. The way he perceives batteries is more rational that others. A guy I know with a Contender and insists on dry cell batteries and changes them every two years. Generally if you depend on changeing the batteries every two years where is the rationalization in spending excessive money on batteries? Also most charging systems are not designed for deep cycle batteries. The best thing to do is determine the amp draw of your starter and go from there (automobiles do this).