Aluminum battery box on tongue

My aluminum box was on my trailer with four batteries and I never had any corrosion or battery cables flying around. It would be a good thing to add a battery disconnect switch so you can turn off the power to the trailer when in storage...

I might add that batteries seem to do fine under the hoods of our cars without off gassing or fear of corrosive gas...

It is my understanding and I could be wrong that car batteries usually only emit gas when they are in a over charged state...

Plastic / ABS / Poly battery boxes

http://www.allbatterysalesandservice.com/browse.cfm/4,576.html

http://midstatebattery.com/pdfs/accessories-quickcable/quickcable-battery-boxes-catalog.pdf

http://www.tank-depot.com/product.aspx?id=741

http://www.thomasproducts.com/batteryboxes.shtml

As much as I love the looks, aluminium is not too good material for the application.
It will corrode and any loose cable can end in disaster.
Interesting what weight distributing bars made to the trailer above.

Caution, isolate the aluminum from the steel frame to prevent galvanic corrosion. Aluminum is much more easily attacked by battery acid than steel so you might want to keep a heavy coat of paint on the inside of the box.

Old-Biscuit wrote:
Power Armor by TorkLift

I have a TorkLift box and really like it. Very well made. I got one large enough to also store the hitch equipment when it is not being towed.

Like the idea of the 48-inch side mount tool box (PEPBOYS) with a latch key lock.

The side internal tray area is ideal for dressing in your cable and adding a couple of vent holes.

I would also use round head bolts on the bottom of the mount with the bolts inside the box floor area. This will prevent cutting the bolts off and someone stealing the whole box.

A couple of GILLDAWG79 GOOGLE photos showing the 48-inch side mount tool box...







Roy Ken

I added a Delta Box. This model is made for the A frame of a trailer.



I added 3 additional deep cycle batteries which gave a total of 4. I stayed with 12 volt because my original battery was brand new and did not want to just throw it away. Plus I bought my deep cycle batteries at Costco and the 12's had a two year warranty and the 6' had one year.. If I was to replace them later I would have went with 6's. It would be about 340ah vs 440ah.

Note: After taking this photo I found out that I had it wired wrong. I moved the negative battery cable to the other end of the battery bank for more even use. You want to think of the bank as one big battery.




I vented the back and bottom of the box


I made a shelf that sits above the batteries that I used for storage of power cables, water hoses and tow bars...



You want to consider how much weight your adding to the tongue. My trailer was a heavy toy hauler and the tongue was designed to hold a generator where I put the battery box.

You can read all about the box I fabricated for my trailer here:

www.rvbprecision.com

It's in the solar install article

Can't answer your question directly but I have thought about same thing. At least one person on here has them on tongue and their tongue weight is around 1200 pounds. On my set up that would mean I had have to replace my hitch for the added tongue weight. Lots of examples here. Maybe some ideas for you?


https://www.google.com/search?q=batteries+on+tongue+%26+rv&biw=1188&bih=585&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjAqorEusbKAhVMxGMKHfVdDVcQ_AUICCgD

Be Careful about adding dense weight or stress depending on what you have.