I, like you, wanted dual batteries. I, like you, like to cut at virgin new sheet metal.
So after figuring where I wanted the bat system I saw that after upgrading my exhaust system I had this HUGE gaping area under the ass of my JK. This combined with that storage area being way to damm small I set to work.
Blessed be thine sawz-all
I found that a 40mm ammo can fits 2 Odysseys PERFECT. so instead of having to fabricate an entire new box from scratch I went and used one box and welded another cut down one to its end to make it as wide as the old storage area. this gives me a nice deep storage "box" next to it. the new storage area is bigger AND I get dual batteries
The ammo cans also have a diagonal reinforcement on them and are a decent thickness.
This is as I was tacking it all in place
Oh ya, I figured this would be a rock magnet so it got armor before installation. 3/16 plate bottom and front edge should keep damage to a minimum. I added speed holes to be like the cool kids
2 batteries, a Hellroaring isolator/combiner, a 500amp fuse and block for the 2ga running to the front, a breaker for the new amps all stuffed in a small package.
I went and tossed some plexiglass on top it just for the heck of it even though I have covered on every pos terminal. its better to be safe than sorry.
all holes are grommited, all wire armored and every connection (besides one ground that I am too lazy to fix) marine grade sealed.
Up front where the old battery was is a distribution block with everything connected there. that space I have not figured out what I want to toss there.
Oh and I ran a plug for when I need to jump start someone
I will add another to the rear later.
questions, comments, concerns?