Product review (5 stars): WORKS!  with new Dometic 13.5k AC with a 2000watt WEN gen
After installing, I couldn't get it to work.  This is with a brand new Dometic 13.5k BTU AC unit on my new camper trailer.  Gen was a WEN 2000 watt (the bright yellow one they sell on Amazon).

Tried it a bunch of times, but it would choke when the compressor turned on.

Decided to try something new.  Make sure no other AC appliances are running (ie fridge).  Let the gen run for about 2-3mins to "warm up".  Then I turned on the AC fan at low.  Let that run for about 2-3mins.

NOW turn on the AC (with fan still set to LOW).

It actually ran!  Ran it for a solid 10mins to make sure it worked and the camper was cool (it was!).  Even tried to turn on the fridge at this point.  While it did run as well, the red OVERLOAD light was softly lit, pretty much meaning I'm at the little gen's max - but it did run for a solid 3mins before I called it a successful run and stopped it.