Features: To control the charge of wind turbine generator battery. Protect the wind generator and prevent the battery from overcharging. Made of high quality material for long durability and stable performance. Easy to install and convenient e. Single phase and three phase for you to choose. Specifications: Condition: Shell Material: Aluminum + Epoxy Resin Color: Black Type: Single Phase, Three Phase(Optional) For Single Phase Rated Power: 300W Battery Rated Voltage: DC 12V Controller Output Current: 15A Controller Output Voltage: 14. 20.3V Start Braking Voltage: 14. 50.5V Recover Charging Voltage: 13. 50.5V Weight: approx. 121g Connection Method: 2 yellow wires are connected to wind turbine generator, red wire for battery positive pole, green wire for battery negative pole. For Three Phase Rated Power: 300W Battery Rated Voltage: DC 12V Controller Output Current: 10A Controller Output Voltage: 14. 20.3V Start Braking Voltage: 14. 20.5V Recover Charging Voltage: 13. 50.5V Weight: approx. 247g Connection Method: 3 yellow wires are connected to wind turbine generator, red wire for battery positive pole, black wire for battery negative pole. Package Included: 1 x Wind Turbine Generator Charge Controller1To control the charge of wind turbine generator battery 2?Protect the wind generator and prevent the battery from overcharging 3?Made of high quality material for long durability and stable performance 4?Easy to install and convenient e 5Single phase and three phase for you to choose