jFlips706

I wouldn't think it would have much of an effect on the fish except in extremely shallow water. I'd sooner think the reason you weren't catching fish was because you thought the ducks mattered. Basically if you think it's important, it is.

I actually will need a three bank charger. Thanks though.

I do have a 12V TM. A question though.. If I have my TM batteries wired in parallel, should they still be treated as two batteries and thus need a charger bank for each battery?

So if I end up with two trolling batteries and one cranking battery, a good way to wire it would be... Both TM batteries wired in parallel circuit(positive to positive/negative to negative) TM connected to only one battery All Sonar and other electrical accessories connected to cranking battery Outboard connected to cranking battery One Bank of charger connected to each battery(I assume each bank consists of a hot and ground wire) The attached provides visual reference.

Not sure where you got that, bud. But I definitely meant 'onboard' charger. So I need one bank per battery. I was thinking that to hook the batteries up in parallel would allow me to charge 2 or 3 simultaneously with one bank. Guess it doesn't work that way. I was hoping I would be able to do that because I thought it would divide the charging amps by the number of batteries reducing the heat generated in the cells and prolonging the life of the battery. I understand a 6 amp charge is still a pretty hot load. I wanted the charge to be something like 2-3 amps per battery. Like a trickle charge. Has anyone experienced lower battery life from a 5 or 6 amp charge on a battery. Thus far all I've ever used is a trickle charge from a portable charger.

I own a small aluminum boat currently powered only by a trolling motor on the bow. I am thinking of buying an outboard and using it along with an onboard charger to charge my trolling motor batteries. My question is what sort of charger do I need to charge two batteries? I was thinking a single bank 4 - 6 amp charger. Is it that simple? BTW, I'll be using somewhere between 25 and 50 hp outboard.