I built one out of a pressure treated 2X10 and figured I'd just use it a while to see if it works OK. Painted it black so it didn't stand out like a sore thumb and next year I'll break out the welder and fab one a little more "refined".
Here's a pic
The wood is secured with two truck deck screws that are #12 self drill/tap on each end. The enclosure in the center is for a Blue Sea Battery Selector Switch (Off-One-Two-Both, 300 Amp). that was $32 at West Marine.
Since I already had two batteries stolen off my old trailer (right out of my back yard) I secured these with two Master "Python" cable locks. Cables are passed through two holes drilled in battery box lids so cables are snug against battery case. Even if you break the lid off you can't get enough slack to slide the batteries out from under the cables. Cables pass through a hole drilled in the wood on one side and a pair of screw eyes on the other (board not wide enough for hole
) and pass around the welded in battery rails under the frame. The cable locks merely need to be loosened to their "bitter ends" so the lids can be tipped up for battery service.
Found a Plastic utility box I'll incorporate into the welded frames I build next season that will provide some more beauty to the setup but this is very functional. Battery switch will eventually be moved inside as I put together some #6 wires and connectors to upgrade the entire 12V feed to and from the Converter and inverter mounted next to it.
BTW, the batteries are two Group 29 Deep Cycle 12V.
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"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change
)