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The Lifan ESI4000iER-EFI is a portable inverter generator with a 270cc OHV engine, electronic fuel injection and a rated 3800 watts (4100 surge). It stands out for its remote key-fob electric start, pure sine wave output of 2% or less distortion, and a 57 dB rating at 23 feet. That makes it a fit for RV, camping and tailgating use where sensitive electronics need clean power. Against carbureted inverter rivals it adds EFI and remote starting, but it is heavier and louder than the quietest small inverter units and has no 30A RV outlet.
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This is a 4000-watt inverter generator powered by a 270cc 4-stroke OHV gasoline engine with EFI. It produces AC power with a pure sine wave and 2% or less distortion, so chargers can be powered without risk of damage. It is suited to camping, RVing, tailgating and general use around the house.
It starts with a recoil pull or with the electric start, which can be triggered from the included remote key fob. Auto Idle (power on demand) adjusts the engine to the load. Low oil engine shutdown and AC overload protection are built in. An exhaust spark arrestor allows operation in national parks. Sound output is rated at 57 decibels at 23 ft (7 m).
