The Champion 3500-4000W Open Frame Generator is a gasoline powered portable generator that is powered by a 196cc Champion single cylinder, 4-stroke OHV engine that produces 3,500 running watts and 4,000 starting watts. It’s ideal for powering a trailer, RV – start and run 15,000 BTU RV AC. It can also run your essential items in a power outage – lights, sump pump, refrigerator, modem/router, fan, TV/DVD, and one or two small power tools. You get up to 12 hours of run time at 50% load and it puts out 68 dBA at 23 feet. It has an easy-pull recoil start and a low oil shut-off sensor. With the generator, you also get a spark plug socket and an oil funnel, plus it is RV ready because a TT-30R outlet is also included. The generator is 49 state compliant (EPA certified).