... years, Blades: 2 years wind mill generator, wind generator, wind power,wind mill generator, wind driven generator, aerogeneratorwind turbine ,wind generator ... securityYESBattery offline protectionYESCoolingForce air cooling InverterApparent power3KWCharging voltage48V DCRated inverter output voltageSingle-phase AC220V/110V±10%Frequency50HZ±1% / 60HZ±1%Wave ...