[Jack Houpe]

I will be doing a lithium conversion to our Newell down the road, I did to our class b rv and it was fantastic, I built my own litepo4 battery which gave use 600 ah at 12vdc with a 300A Daly BMS, used victron 3000w inverter charger, had 770 watts of solar with victron mppt solar charger and went 9  days once running everything off the sun. I built a 1 ton inverter heat pump that would run off the panels alone. The Newell has so much real-estate on top of the roof as we to have basement air that you could put a huge solar plant up there.

           

[Richard]

Absolutely LOVE the enclosure for the mini split on the Van. Very clever to incorporate the Mercedes emblem into the design.

[bestgenman]

You might be interested in this device.  Available at Battleborn. 
   

Intended to keep the engine alternator from overheating because of excessive current output.  Can be used instead of a B2B device.

[SouthernDevGirl]

Wow, Jack, I agree with Richard, that mini-split custom-case is the bees-knees!

How did you go about sealing the cutout that originally accommodated the conventional rooftop AC unit, welding a metal /or/ composite work?

I did something similar with our Leisure Travel and found that welding a steel plate was a very bad idea and went back to use composites (primarily epoxy w/ fiberglass/carbon-fiber)

@bestgenman - I've read about their solution; however, with the alternators used on Newell's and their high-output/cooling even at idle-RPM, I feel like it can be avoided. Worst-case, just isolate with a properly sized DC-DC charger which yields a lot more power because it's on on-for-50%/off-for-50% type of solution; plus it will compensate for other issues, such as a better charging curve/voltage and for those vehicles that use "smart" regulators which (incorrectly) interpret lithium's high-voltage to indicate 100% SoC.