Trailer tongue box battery setups?

Group 31 batteries weigh 60 lbs a piece, before installing two do a full power assessment before you install them. 120 lb of battery on the tongue causes a lot of tongue weight.





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Minimum set up, one battery (sealed AGM), one smart battery charger, one shore plug, two 12 volt outlets.
 
We recently completely rewired a Conqueror trailer for a customer:

This is the nose box after we had delved into the electrics to find out what worked and what didn't



This is what it looked like close to completion with a solar controller and battery charger mounted on the back wall and the battery recessed below them. On the front of the nose we mounted a junction box and the breakaway kit for the electric brakes:

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We added shore plug, and a resettable water resistant fuse box to the side of the nose box:

CIMG3458.jpg


And flexible LED lights for the interior of the main box:

CIMG3461.jpg
 
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Mine is kind of pieced together: I replaced batteries in both our Jeeps with Diehard Platinums so I moved the stock batteries to the trailer. Put them in a plastic waterproof tongue box I got from Northern tool with a smart switch between them. Added a batteryminder switch for both solar and shore charging and a flexible solar panel (mounted to the trailer lid with a flat screen TV mount so I can point it in any direction, yet invert it and tie it down for protection on gravel roads). Also added an inverter for those creature comfort items and a marine switch panel on the outside of the box so I can turn on lights or 12V charge stuff. One of the switches turn on a bunch of LEDs I have inside the box so I can find stuff at night (also store a fire extinguisher, road tools, and bear repellent in the box). I also have some exterior lights that help at night while setting up camp and inside the trailer I have a refrigerator and a 25 gallon tank with water pump so I need the juice. I've been out for a week without needing any 120V input so it has worked out well.
 

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Bump for an old post, but looking to do something in the front of my trailer. Here is what I'd like, but I dont want to mess anything up.

-Charge off the truck
-Shore plug to charge off the house/campground
-Possible solar charger down the road

Going to run a fridge, some LED lights, charging phones, etc.

Just not sure how this would be wired up.
 

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