Thread: question

One bank will charge both but not very fast.I would disconnect the jumper wire and charge separately.There is no way to equailize with them connected.

I use a 6 amp charger and it charges em up just fine. If one of those battery's is to start your big motor your motor will charge both battery's as well. Best thing I ever done was hook those two batteries up.

Minn Kota says to hook one bank to each battery.

I have my charger hooked to one charging both in a 12 volt system. One leg of charger to trolling batteries and one to cranking battery. ProMariner says one leg to one battery only. Never had a problem keeping both charged. Hooking to one battery in a group tied together as 12 volt they will equalize. Ran 4 batteries as 12 volt in big trucks for 30 years with only one charging leg to one battery off alternator. Any time you check them they will be the same as long as nothing is wrong with any single battery.

Yeah both my batteries read the same voltage. I also run 4 batteries in my truck with 1 alternator.

It will work, but a three bank carger with a leg to each battery does a much better and faster job. You don't have to disconnect the jumper. I leave mine on all the time. I do check the water about four times a year.

Originally Posted by Big C

One bank will charge both but not very fast.I would disconnect the jumper wire and charge separately.There is no way to equailize with them connected.

there is no need in disconnecting the jumper !!! all you have to do is put the positive lead to positive on battery A and the negative lead to negative on battery B !!! now you are charging both batteries together !!!here is a diagram !!!and it will charge quicker then you think !!!