Ok you know that feeling when you arent sure if you just made a bomb?but I installed the 36v battery system anyway.
There has been a lot of thought go into this maybe to much. My crank and house batterys sit to the side at the back of the boat, the trolling motor I mounted on the bow to the opposite side of the crank and house batterys to balance themseves out. The trolling motor power batterys where going to be to heavy to put at the back so they are inside the cabin in the middle of the boat just in front of and under neath the cockpit. They sit inbetween mounted rails on the hatch that they sit on, The batterys are then strapped to the hatch.
The onboard battery charger is mounted so I just have to get home and plug the charger into the wall to take care of the whole lot.
The batterys are 12v connected in seires to make 36v, wiring is all 8 gauge
I chose AGM over flooded batterys, yes they are more expensive but are more durable and dont leak and or expel gases that are dangerous.
Lithiums would be the next bestest option but cost more than the boat itself.
The batterys are easily removable along with the trolling motor wich is on a heavy duty removable bracket. every thing is connected with Andersons so if I want to take all the trolling stuff off and have a wine and cheese evening with the wife I have the room in the cabin wich also converts into a doublish sized bed.