Split battery bank to multiple locations?

What Roy said!!!

I am going to attempt a similar installation here soon...

My problem is not having enough room on my trailer tongue but having two separate battery banks requirements. One on the OFF-ROAD POPUP trailer for camping and another requirement in the bed of my Truck when running Emergency Radio OPS with just the truck by itself. Then I want to combine to the battery when camping to double my capacity. As indicated above the probelm is going to be when you need to re-charge them.

I originally had four BATTERY BOXES lined up on my trailer tongue area which extended out over both ends. I see no reason why you can't do the same thing with your HASH 22H 22'TT. Place some angle strips on top of the trailer tongue and extend out on both sides to mount four GP24 GC2 battery boxes or maybe just one 48-inch side mount lockable tool box from AMAZON like this...


This will mount on top of the trailer tongue and extend out on both sides and look very similar to this install. This lock box will hold four each 6VDC golf cart batteries just fine..




This should fit your Trailer just fine...


Always plan on using the BLUE SEA type BATTERY switches for this type of setup. It is sometimes necessary to isolate your two battery banks and charge one bank at a time...
I have used this brand of battery switches in my working years on many DC systems..


I also use the BLUE SEA PRODUCTS for fuse blocks and terminals blocks where needed... Everything I have in my DC Battery system is terminated into the proper sized ring terminals for the best of connections where needed...


Roy Ken

Chilly,
You can also add extra battery's up inside the frame rails right at or just before the dual axles, I can't remember where the electrical bay is located in the Nash, but it should make a shorter battery wire run to the bay.

This is what I am doing for my Desert Fox TH, as I have no outside storeage areas etc. I am adapting Kayak Mikes idea, who first did it.

If you head over to the Northwoods home base forum (afnash.com), there were several there that did the same mod for extra battery storeage etc. I think/believe that Adam put extra battery's along the outside frame rails to increase storage.

Tia,
Don

It will not be perfect but will certainly add capacity if that is what you need. I would use same wire size to connect the rear batteries. You may need to make some additional effort to verify all is 100% tip top charged upon return from a trip. I would not plan to run a large (500+ watt) inverter from this separated pair.

Yes just ground the second bank to the frame for the neg parallel link and connection to the "head" You now only need one positive wire to the "head" to be the parallel link and the connection there. You do need a fuse on that positive wire close to the batteries.

Yes to the above to have a switch so you can use the batteries as a four battery bank while camping but separate them for when not camping. Buy a small maintenance charger that stays at 13.4v (typical amount) to put on the second bank while the converter does the other bank when you have shore power. (If on solar for long periods of storage not camping you would need two separate solar maintainer sets )

That is going to be a rough ride on the back for batteries, acid leaks can be a real mess.

Chilly,

This is a question I dealt with a lot while I was still doing boat work. (Before the Depression) Lead/Acid battery simply do not play nicely together. There is no way to change that. They could have been together went they came off the assembly line, and they would soon be too different to behave well in parallel.

You can try to match the impedance to of the charging circuit, but as soon as you go the frame for a ground that is lost. Even if you completely match the charging circuits (I have tried) , you will never get the two banks to agree on what they should be doing. Just a few degrees of temperature difference will change the admittance of the banks.

Best Bet: Get a marine battery switch and keep your brain in gear. When trying to recover both banks, you can bulk charge with the switch at "Both" and you can run with there also, but you can't finish charge both at the same time and never store with both on.

And remember, copper is your friend and you only have to buy it once.

Matt