I am awaiting delivery of my 2014 38FL and am starting to work out the details of how I want to configure my off-grid power. I've done a little bit of the math and given the limiting factor being water based on previous experience my wife and I can comfortable live 3 days on 100 gallons of fresh water, probably more depending on what we are doing.
So if I can configure my power source with enough to cover 3 days off grid then we'll be really happy.
With that said, I've done a bit of the math and unless we are in a very hot climate and need to run both A/C units 24/7, a set of 2 100Ah lithium batteries will more than cover our power needs. (Of course more experimentation required, but for now that is my #)
So as it would happen the cost of 2x 100ah batteries from http://www.lithiumion-batteries.com
actually cost less than the Onan 5.5k generator, are smaller and 1/2 the weight. So far no down side....
There's the back story, now my question, if I place these batteries in the area designated for the generator (yes they will fit very comfortable and I ordered the 38FL with hen-prep option), how do I charge them from my truck. I ordered the F350 with dual alternators so there theoretically is 384 amps to go around from the truck, but I'm a little lost how I get that power from the truck to the generator compartment.
Yes I know there is some power available in the 7 pin connector that runs the coach lights, charges the house battery and so forth, but I have no idea what the gauge of the wire is or how much current is available for charging other batteries.
Any help would be appreciated.