WindMill 400W Wind Turbine The 400W wind turbine is our economy level wind turbine, made specifically for off-grid residential use in mind. Its DIY set-up instructions and with all the materials needed provided for, you will be able to set the wind turbine up in no time at all. The 400W wind turbine is durable, low maintenance and the lightest wind turbine in our line up of wind turbine having weighing at only 16.8 lbs. Coated with special high weather tolerant protection spray to protect the wind turbine from the elements such as rain and salt water from the sea. It is a completely self-sustaining stand-alone device that will continuously generates 100% clean GREEN renewable energy, without you being present or around it. The Charge Controller of the 400W wind turbine is built within the wind turbine itself. The Charge Controller is specially designed for each individual wind turbine, the special design allows you to get the most power out of the wind turbine as well as to protect your wind turbine from overcharging. ✅ SPECIFICATION: Rated power: 400W Rated speed: 46 ft/s Voltage system: 12V Cut-in wind speed: 6.7mph Suggested battery capacity: 50A or larger Number of blades: 3 Rotor diameter: 4 ft Light weight: 16,8 lbs. ✅ INCLUDES: 1 x Center piece + tail (including generator + MPPT) 3 x Blades 1 x Nose cone 1 x Manual brake switch + voltmeter display box 9 x Hex bolts (Large) 2 x Hex bolts (Small) 1 x Hex key 11 x Nuts 20 x Washers 1 x Unilateral open wrench 1 x Operational installation manual ✅ WARRANTY: 1 Year manufactures warranty.