Main Parameter: Wind Turbine Model: PM-300 Wind Turbine Portable 300W Wind Turbine Generator Wind Turbine Rotor diameter: 1.5m Wind Turbine Blades quantity: 3 pcs Wind Turbine Direction: Always downwind Wind Turbine Blades material: Glass fiber reinforced plastic Wind Turbine Rated output: 300W Wind Turbine Maximum output: 400W Wind Turbine Initial voltage: 28V Initial wind speed: 3m/s Nominal wind speed: 12m/s(27mph) Stormstand: Up to 35m/s Wind turbine type: PMG (on constant magnets) Working temperature: From -40 to +60 C Annual average energy production: 750kWh Recommended accumulators: 12V 120AH2PC Accumulators full charge time: About 8 hours Mast height (with guys): 6m optional Weight: 13kgs (without mast)