I went for a portable Ark power pack with a 105AH AGM battery in the back. Yeah it takes up room, but it'll make us pack lighter and has larger capacity.
I got a Redarc isolator installed in the engine bay with wiring to the back. I connect the power pack via an anderson plug. It gives me the option to move the power pack when I need, to run lights or even my portable compressor away from the vehicle.
Cheers,
goof

