diy solar

diy solar

The travel trailer project begins.

ouldn’t want to try to put a panel on a plastic floppy A/C cover. That’d be pretty sketchy, lol.
It is. I’d do something inside to make it safe. Id never suggest depending on that cover on its own merits! ?‍?
 
The story:
I just purchased a new Wolf Pup 14CC. It comes with a “juice pack” that includes a 50 watt solar panel and a solar controller that looks like it cost $12.

I will be adding an additional 150 watts of solar, swapping the battery out for two 100ah lifepo4 batteries (one battleborn, one off brand). I’ll be adding a 2000 watt renogy inverter to one outlet I’m going to install in the travel trailer. The solar controller will be replaced by a Victron 100/30. Battery monitoring will be a Victron 712. The stock converter charger will be swapped over to a WFCO lithium compatible unit. The overall goal is to be able to leave the batteries in year round in MN (the battleborn is heated the off brand will get a heating pad of some sort or get pulled during the winter). Ideally the solar will be able to keep the batteries topped off and heated battleborn warm all winter. I’m hoping I can get 3-4 days of boondocking out of the rig. I do have a 100 watt portable I can use to supplement or a genny if really needed.

Everything is ordered and ready to go. I start installing tomorrow. It’s still winter so I’ll be taking my time but I have to start by creating a mounting board for everything in the storage compartment. I’ll be putting photos and updates here if anyone cares to follow along. All comments and criticism is welcome.

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An advertising photo of the same camper I purchased.

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My new rig on it’s way home. I got to purchase it on my birthday this year so that was pretty fun.

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The storage compartment where everything will go. The mounting panel will wind up behind the dinette on the right side of the photo.

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The pile of goods sitting in the living room waiting for a new home. I think the only thing not in the photo is the 250amp ANL fuse that should be in the mail tomorrow.

The only part of the project that’ll have significant wait is the solar panels. I’m not trying to mount them until it warms up in a few months. Everything else is going to go in as time allows. I should be able to make progress each week and update the thread. I posted the wiring schematic in another thread if anyone is interested in checking that out, nothing too fancy.

Thanks for having a look. Wish me luck!!
Hi there,

I have a 2022 14CC and plan on doing the exact same conversion. My biggest hold up is the power coming from the tow vehicle. I dont want to connect a Lithium battery to the 12V vehicle system. I have heard many bad stories about this. The plan was to wire in a DC DC charger but I am struggling to find a way to bring all the 12V wires from under the trailer to inside the trailer.

How and where did you drill the hole to make it from the bottom of the camper to the inside? Why did you decide not to get a DC DC charger for the vehicle connection?

edit: My WFCO came Lithium ready. It had the lithium AC DC converter already installed from the factory.

And I did actually see where you routed the wires up through the floor. What’s the black cable/hose next to the ground and positive battery wire?
 
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Hi there,

I have a 2022 14CC and plan on doing the exact same conversion. My biggest hold up is the power coming from the tow vehicle. I dont want to connect a Lithium battery to the 12V vehicle system. I have heard many bad stories about this. The plan was to wire in a DC DC charger but I am struggling to find a way to bring all the 12V wires from under the trailer to inside the trailer.

How and where did you drill the hole to make it from the bottom of the camper to the inside? Why did you decide not to get a DC DC charger for the vehicle connection?

edit: My WFCO came Lithium ready. It had the lithium AC DC converter already installed from the factory.

And I did actually see where you routed the wires up through the floor. What’s the black cable/hose next to the ground and positive battery wire?
There is no harm in the power coming from the tow vehicle....it is just the lack of power coming from it. I don't have a dc-dc as it does not suit my style of rving at this point. The lifepo4's do charge off the tow vehicle but very little at about 7amps per hour and I'm ok with that. I have a generator to top them off when needed and most of the time when needed we need the AC unit to run as well to cool the rig off so the lifepo just charge at that time at a rate of 50amps. We have one 200ah lifepo4 in our rig. Perfect for those overnight stays at a harvest host or cabelas between running from rv resort to the next.
 
Lithium battery to the 12V vehicle system. I have heard many bad stories about this
There is no harm in the power coming from the tow vehicle....it is just the lack of power
That, and the size of that charging wire. A lowered-voltage lithium battery is almost a short. In reality, if the charge wire is properly fused there isn’t a danger. The same resistance in the wire that keeps it from charging well is a buffer, too. That’s my view.
The plan was to wire in a DC DC charger but I am struggling to find a way to bring all the 12V wires from under the trailer to inside the trailer.
Use a plastic junction box made for this, and drill through the floor in a hidden spot under where all the electrical services are. Feed up from there. The box is made for the 7-wire trailer towing connector but it’s wicked handy for other low voltage purposes.
My preferred method is to drill a hole for a 3/4” plastic conduit connector and install it with 5200 (or 95% of the time: loktite polyurethane caulking which will outlast anybody reading this today). I use a conduit stub to go up through the floor and stick up about 6” through a tight-fitting drilled hole- no mice issues and you can caulk the underside.

You’ll want a selection of bare crimp #6 or #8 ring terminals in probably 2 or 3 wire gages. Very serviceable.
 

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