Hf2.8-600w Blade diameter (m): 2.8 Rated rotated speed(r/min): 400 Rated speed (m/s): 8 Rated power: 600w Max power: 1000w Output voltage (v): 24 Start up wind speed (m/s): 3 Work speed (m/s): 3-25 Security wind speed(m/s):50 High of tower (m): 6 Top weight except tower: 85kg Tower steel tube model (mm): 76 Speed regulation: leaning tail and electric brake Capacity and quantity of battery: 12v100ah2 pcs Can supply power for: color tv sets, washing machines, lighting, refrigerators 168kg