Title: FD2.2-200W Power: 200W Blade diameter: 2.2 m R/min: 400r/min Rated speed: 8m/s Rated power: 200W Max power: 350w Output voltage: 24V Start up wind speed: 3(m/s) Work speed: 3-25(m/s) Security wind speed: 40(m/s) High of tower: 6(m) Top quality except tower: 45kg Tower type: Diameter 60mm steel tube Output controller system: Controller, Inverter Suggested batteries and it's capacity: 12V100AH 2PCS Can supply power for: Electric fans, Lighting