We don’t have a need for 2 batteries as we only visit serviced campgrounds/sites, but there was room, so I got another matching box ($18) bolted in place with 1/4” hardware (both boxes) and used one as storage for gloves/Rhino blaster/sewer hose elbow and adaptor, along with a bottle of spray9. I put some drain holes in the bottom will keep it dry. I didn’t like having to find a place for the “gross” stuff so outside of the trailer and truck only seemed to make sense, and it was some unused space anyway! Also I cleaned up some the battery wiring, it entered through the front before but it looked weird and messy, I rotated some of the ‘P’ clamps to keep the wiring up more and tucked under the frame, they were more like ‘d’ clamps before, with some zip ties, and some better routing it’s a cleaner look and there was less chafe points.
Post ur comments and let me know what u think, cheers