5500 surge watts; 5000 running watts389cc, 13 HP 4-stroke OHV engine with electric startVersatile 120V GFCI-protected duplex, 120V locking plug and grounded 120/240V receptaclesLarge 6.5-gallon fuel tank for up to 9 hours of continuous run time at rated loadIntegral battery tray (battery not included)Automatic low oil shutdownCircuit breaker protectionFull perimeter frame protection76dB sound rating120V AC rated Amp: 41.6; rated maximum: 45.8 Amps240V AC rated Amp: 20.8; rated maximum: 22.9 Amps12V DC voltage with 8.3 DC amperage