The Champion Power Equipment 201157 3650-Watt Dual Fuel Portable Generator with CO Shield features a convenient electric start and includes a battery. This unit includes 0.6-quarts of 10W-30 oil. Operate your Dual-Fuel generator right out of the box on gasoline or propane, and easily switch fuels with our patent pending fuel select dial. Using gasoline, the 224cc Champion engine produces 4550 starting watts and 3650 running watts, and will run for 14 hours at 50% load when the 4.7-gallon fuel tank is full. It produces 4100 starting watts and 3285 running watts, and will run for 10.5 hours at 50% load when using a 20-pound propane tank. Also included is a 6.5-foot propane hose with a built-in regulator. All the outlets have covers for protection and include 120V 30A locking outlet (L5-30R), a 120V RV outlet (TT-30) and a a 120V 20A household duplex outlet (5-20R). CO Shield technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by engine exhaust when the generator is running. If CO Shield detects unsafe elevated levels of CO gas, it automatically shuts off the engine. CO Shield is not a substitute for an indoor carbon monoxide alarm or for safe operation. DO NOT allow engine exhaust fumes to enter a confined area through windows, doors, vents or other openings. Generators must ALWAYS be used outdoors, far away from occupied buildings with engine exhaust pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.