Rutland FM1803 Wind Turbine, Horizontal-Axis Wind Turbine (HAWT) Design, with Furlmatic Operation. Power Output: 52 Watts (3.77A) @ 5m/s, 840 Watts (60.87A) @ 15m/s. Voltage Output: 12V. Cut in Speed: 3m/s, Turbine Diameter: 1800mm, Turning Radius: 1145mm. Weight: 29.2Kg (net), Supplied with Marlec MPC2 12V Charge Controller with temperature sensor..