Lithium battery placement

[PLane]

I tried looking for related threads but didn’t find this specific question.

I am wanting some input on placing two lithium batteries and a inverter charger underneath the bed on a 2018 Classic 30 rear queen bed. I will be putting this at the end of the bed storage closest to the axles. The total weight is approx. 165 lbs. I will also be leaving the Factory AGM batteries in the battery box on the tongue. My concern is not being too heavy, the concern is weight distribution and how it may affect the structural integrity and towing characteristics. thanks in advance for any experienced replys.

[BigSxyWhtGuy]

We are adding solar to our rig and likely gonna place 4x lithium batteries under the bed. Only real place we can do it unless we eat up closet space. I am not concerned about the weight but I’ll follow this thread and see what people say.

[Froglips]

You do need to be mindful of reducing tongue weight as it will have an effect on towing stability. I would not think 165# would be significant but four batteries and a large inverter might. Before you spend a great deal of money and end up with a towing problem, estimate the added weight behind the axles (and lowered weight in front of the axles), buy a few 50# bags of sand to throw on your bed, and go for a drive.

PLane,
I have not seen a charger that will appropriately charge a mixed technology battery setup that you describe. What are you going to do to charge the two different types of batteries?

[GMFL]

Under the bed is a perfect place as long as you are ok with the loss of the storage. On the classics that’s about the best place to put them.

[lewster]

Under the bed is a good place unless you want to go below your front couch. I have done this in several 30 foot classics with great results! It's really where you feel it most comfortable.

[JonDNC]

Originally Posted by PLane

I tried looking for related threads but didn’t find this specific question.



I am wanting some input on placing two lithium batteries and a inverter charger underneath the bed on a 2018 Classic 30 rear queen bed. I will be putting this at the end of the bed storage closest to the axles. The total weight is approx. 165 lbs. I will also be leaving the Factory AGM batteries in the battery box on the tongue. My concern is not being too heavy, the concern is weight distribution and how it may affect the structural integrity and towing characteristics. thanks in advance for any experienced replys.

Why are you setting things up with 2 charging systems etc. I think you’ll have a much better system is you bite the bullet and make all 4 batteries lithium. Battle born makes a battery that drops in the factory bald with built in heaters. (I have them)

[waninae39]

up front and inside. the Lion do NOT vent, thus no health issue inside
the Lion are MUCH lighter that lead acid.

this also help to reduce tongue weight as it moves the weight close to the AS wheels

[dhroberts]

We placed our 600 amp hours of cells under one of our dinette seats. Didn’t want to use the space under our bed. Eliminated the OEM batteries in the tongue box. Conveniently, we had a plug connected to the lithium cells positioned in the tongue box - permits ready access to power for electric air pump, etc.

[rewillia]

Originally Posted by dhroberts

We placed our 600 amp hours of cells under one of our dinette seats. Didn’t want to use the space under our bed. Eliminated the OEM batteries in the tongue box. Conveniently, we had a plug connected to the lithium cells positioned in the tongue box - permits ready access to power for electric air pump, etc.

We pretty much have the same set-up battery-wise as done by AM Solar in our 2018 Classic M30 RQB whereby we eliminated use of the AGMs up front and had our 400Ah LifePro Lithium battery bank installed underneath the forward dining booth seat cushion along with the BMS, etc..

We now use the A-frame battery box for storage of our extended reach propane hoses and a heavy security chain & lock (we use to lock our Propride hitch OCLs together for security when leaving the AS unattended).

[PLane]

I wanted to clear up my original posts. When I stated I would leave the AGM batteries in the front battery box, I should have added that they would be disconnected and used as ballast to offset the 165 lbs. going under the bed. I would much prefer to place this equipment farther forward so I am very interested in the responses received so far. I did think the one dinette seat might be an option. I am also very interested in how the Lewster fit batteries and inverter under the front reclining sofa.

[lewster]

It is really not that difficult to place a solar control system with a Victron inverter and up to 400 A/H of LifeBlue batteries below your front sofa. I can tell you how or do it for you! Please get back to me at 4rvsolar@gmail.com for more information.