I can run the basics to include the AC with my 2000's in combination even at 10,000 feet, although I only did it long enough to see that it worked. It wasn't hot enough to really need it. To run the AC I have to have both units in the Non ECO mode or they trip when the AC compressor cycles. I can't run the AC and microwave at the same time. I can't run the AC on a single unit, and can only run the microwave on a single unit if the battery charger has been going for a little while to where the draw there isn't too high, and it doesn't have the umph to power the microwave on a single unit if I'm above 6000 foot or so of elevation.
