Anyone made the dive to Lithium and had it in four seasons?

Good thing we have lot of choices.
When I used parts from my TC to build Sprinter conversion - I did not want hassle of propane.
Having 4-cylinder diesel who can run whole night on 1 or 1.5 gallons of diesel, I figured out I can always use Sprinter engine as generator (250 amp alternator).
Even I have couple of generators of different sizes- most of campgrounds don't allow running generators at night.
Never seen 1 who would forbid running the engine whole night ;)