Green energy---300w wind turbine Model number: fd2.6-300w Rotor blade diameter: 2.6m Number of blades: 3pcs Materials of blade: glass fiber Rated rotation speed: 400(r/m) Type of generator: permanent-magnet 3 phase ac Rated power: 300w Max power: 450w Output voltage: 12v/24v Cut-in wind velocity: 3(m/s) Working wind velocity: 3-25(m/s) Survival wind velocity: 40(m/s) Tower height: 6m Output controlling system: electrified controller & inverter Recommended batteries: 12v100ah, 2 pieces Can load: light, fan and charge and tv within 29 inch Authentication: ce and iso certificate Ce, iso