If you need more useable juice, I would just put in a pair of 100AH lithium batteries and be done with it.
I have Dakota Lithium 100AH on my 24V Ulterra and have never even came close to killing them in a hard day "or two" of fishing...
I have Dakota Lithium 100AH on my 24V Ulterra and have never even came close to killing them in a hard day "or two" of fishing...