Thor Forums

[Beau388]

If you are thinking about lead-acid, deep cycle batteries; only the weight matters. The heavier the battery (more lead) the more amps it can store. The voltage produced by a battery is a sum of the number of 2.1 volt cells in the case. Two 6 volt batteries each weighing 30 lbs will have the approximately equal rating of one 60 lb 12 volt battery. Starting batteries should not be discharged below 80% of their rated capacity for the longest life. Deep cycle batteries can be discharged to 50% of their rated capacity for the longest life. A discharge below 50% will shorten battery life. AGM batteries have four major advantages over flooded batteries: they need no water replenishment, they can be recharged much faster, they do not need equalization and they can be discharged to 30% of their rated capacity and this will not shorten their life (some manufactures say down to 20%). The worst thing you can do to any lead acid battery is let it go flat (zero voltage) and leave it in that state for several days.