I too just got (2) Trojan 6 volt batteries rated at 225 AH each...that is substantially more than my 12 volt marine/rv deep cycle at under 100 AH by itself...They are tremendously heavy in comparison though and I am not sure I want to put that much weight
on the tongue to stress the frame of my '71 Boler
even though the frame is in good condition. I am considering a box on the rear bumper. One thing to consider though with a battery
setup is the distance and size of cable from the battery
bank to the charger/controller and/or inverter. To small a diameter/gauge or too long a cable and you can get voltage drop and/or generate heat if the cables are not sufficient to carry the load.