:huh:Good morning. I am thinking on replaceng my old orig. battery charger. I run 3 group 31 batteries, and am wondering how many amp charger I really need? I have a 35 amp now, so its a little less than 13 amps per bank. but do I really need all that? I have kind of a tight budget. I see them anywhere from 13 -40 total amps. I use the boat only on the weekends, so it has all week to charge, twin 5.7s and have a Westerbeke 4kw gennie, just dont know what will fit my needs. Thanx.