Good general knowledge site for batteries May 17, 2012 1:49:30 GMT -5 Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by cowcharge on May 17, 2012 1:49:30 GMT -5 They're a commercial site, but it's written in an honest, objective manner, and they explain well the differences in battery types.www.windsun.com/Batteries/Battery_FAQ.htm#Industrial deep cycle batteries