Product review (5 stars): Works better than expected
This really helped make the startup of my 13,500btu RV AC unit much easier.  My 2000 watt Honda generator will start it most of the time at sea level ( I know thats asking a lot of a 2000 watt generator- but before it would trip the breaker every time).  At altitude I still needed to use 2 parallel 2000 watt Honda generators, but the initial load on my generators is noticeably less.