The Yamaha EF1000iS inverter generator is the ultimate in lightweight portable electricity. The EF1000iS with its inverter system - features pulse width modulation (PWM). That means these generators deliver clean power so you can use them confidently for powering computers, solid-state appliances with built-in computer functions or microcomputer-controlled power tools. Lightweight design / easy to carry - newly designed exterior and compact lightweight inverter unit reduces weight to 27.9 lbs. Lightest weight generator in its class. Noise block acoustically designed sound reduction system - molded casing, noise-absorbing glass wool construction and a newly designed muffler produce unbeatable noise reduction. Long run time - runs continuously for up to 12 hours without refueling (at 1/4 load with "economy control" function on). Smart throttle load sensing throttle control - automatically adjusts engine speed to precisely match load, resulting in greater fuel efficiency and noise reduction. 12 volt DC output (battery charging cables included) - recharge 12 volt batteries for RV, auto, marine, aircraft, etc. Inverter system with pulse width modulation - industry-leading system produces higher-quality and cleaner electricity. Results in pure sine wave as clean or cleaner than commercial power and can operate products with built in microcomputers. Exclusive dual coil alternator stator - lower engine speed. Reduced noise, fuel consumption and engine wear. Centralized control panel - control panel enables easy access to controls. Fuel petcock - reduces carburetor contamination by turning off gasoline flow and allowing the carburetor to run dry. OHV 50cc engine (overhead valve) - provides improved efficiency, increased reliability, low oil consumption and noise-reducing operation. Large fuel fill access - wide mouth fuel fill reduces spilling and overflow during refueling. Type: inverter. Maximum AC output: 1000 watts. Rated AC output: 900 watts. Rated / maximum AC current: 7.5 / 8.3. Voltage stability: � 1%. Frequency stability: � 0.1 HZ. Engine: OHV MZ50, air-cooled, four-stroke, single cylinder. Displacement / HP: 50cc / 2.2 hp. DC output: 12 volt 8 amps. Overall length: 17.7". Overall width:9.4'. Overall height: 14.9". Dry weight: 27.9 lbs. Fuel tank capacity: .66 gallons. Continuous operation at 1/2 rated load: 12.0 hrs. Noise level: 47dBA - 57 dBA.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov