Rotor Diameter ( m) : 3.8 Material and number of the blades: Reinforced fiber glass* 3 Rated power/ maximum power: 2000/ 3600w Rated wind speed ( m/ s) : 10 Startup wind speed ( m/ s) : 2.5 Working wind speed ( m/ s) : 3~ 35 Survived wind speed( m/ s) : 50 Rated rotate speed( r/ min) : 350 Working voltage: DC24V/ 48V/ 120V/ 240V/ 300V Generator style: Three phase, permanent magnet Charging method: Constant voltage current saving Speed regulation method: Yaw+ Auto brake Weight: 100kg Tower height ( m) : 9 Suggested battery capacity: 12V/ 200AH Deep cycle battery 8pcs Life time: 15years