Originally Posted by
billnorman1
I have a 100 AH lithium starting battery and a 50 AH lithium battery. The TM batteries and starting battery are charged with a power pole charge. The 50 AH I just mounted separate charger.
This says you have two batteries. Later on you reference "trolling motor batteries" which would indicate two more, four total. It looks like you have two separate chargers.
It seems you want to run your accessories, the ones you would normally run off the starting battery (100AH) off the 50 AH, both Lithiums, for most of the day then switch to the bigger battery to get home.
You could tie both of the Lithium battery ground terminals together with a jumper wire. You should install a heavy duty two battery switch with a (L or R), or a (1 or 2) selection between both positive wires, and put the accessory wire to the boat + on the Common terminal which would normally be on the 100AH battery..
To do this you have to have all the wires that would normally go to the + terminal of the starting battery installed to the Common terminal of the switch.
A question I have is the "Power Pole" charger a charge on the run charger?