1. To control the battery charge of the wind turbine 2. Protect the wind turbine and prevent the battery from overcharging 3. Made of high quality material for long durability and stable performance 4. Easy to install and convenient to use 5. Single phase and three phase to choose Specification: Features: To control the wind turbine battery charging. Protect the wind turbine and avoid battery overcharging. Made of high quality material for long service life and stable performance. Easy to install and convenient to use. Single phase and three phase for you to choose. Specifications: tat: 100% brand new Shell material: aluminum + epoxy resin Color: black Type: single phase, three phase (optional) For single phase Rated power: 300W Battery rated voltage: 12V DC. Controller output current: ?15A Controller output voltage: 14.2 0.3V Start-up braking voltage: 14.5 0.5V Recover charging voltage: 13.5 0.5V Weight: approx. . 121g Connection method: 2 yellow wires are connected to the wind turbine, red wire for the positive pole of the battery, green wire for the negative pole of the battery. For three-phase Rated power: 300W Rated battery voltage: 12 V DC. Controller output current: ?10A Controller output voltage: 14.2 0.3V Start-up braking voltage: 14.2 0.5V Recover charging voltage: 13.5 0.5V Weight: approx. . 247g Connection method: 3 yellow wires are connected to the wind turbine, red wire for the positive pole of the battery, black wire for the negative pole of the battery. Package Included: 1 x Wind Turbine Generator Charge Controller