ouR escaPOD mods

That might be a consideration.

I opted to purchase a 200AH battery. It will be simpler if I don't have to try to connect another monitor. I will repurpose the 100AH battery, but I don't know for what just yet.

The battery arrived today so the modification will begin soon as I figure out where I am going to put it which will determine what materials I need.

Yes. I opted to turn it 90 degrees and build an addition to the compartment where the other one was. It will take away a bit of underneath storage, but it will mean that I won't have to run new wiring. I'll be able to use all the wiring that is there with the possible exception of the negative battery terminal wire. I might need to make a new one that is a bit longer. I'm not sure about that though.

Great write up and great job as usual. That is a pretty big battery. Hope you have enough storage space left to be useful What does it weigh?

I guess the other place to put it if someone wanted to retain the outside storage in the 179 would be to build a box in the under the bed storage area, perhaps also use that structure to create a better duct system for the furnace.

I assume the self heating is done internally using a 12v resistance heater run from the charger? Do the specs provide a current demand for that? Using it might require a charger upgrade.

Now that you have doubled your storage capacity so you have a place to put the energy it produces, you might want to add a permanently mounted solar module on the roof. My original plan was to get a 300-350 watt industrial sized mode and mount it crosswise behind the a/c. They can be had for around 50 cents a watt. If you pick the right one it could be the same length as the rpod is wide so could mount it at it's ends to the top of the side walls without compromising the trailer roof itself. Those modules produce around 35V at their max power point so you'd need an MPPT controller. Weight increase would be around 50 lbs.