Lifan Energy Storm ESI 3600iER, 3300 Running Watts/3500 Starting Watts, Gas Powered Portable Inverter 3500 Watts maximum AC output/3300 Watts rated AC output 177cc 4-stroke OHV gas powered engine (Battery Included) Power sensitive electronic equipment, Safe Clean Power with 2% total harmonic distortion; ultra quiet - 57 decibels at 23 feet 3.5 gallon fuel tank runs 7 hours at 50% load; auto throttle feature - power on demand Receptacles 2 each- 120V 20amp, 1 each- 3 prong NEMA L5-30R twist lock 30amp AC, 1 each- 120/8.3amp DC, powers 13,500 BTU RV AC, quiet- 57dB