Check the listing for details. Efficient 8000W DC 12V/24V/48V Wind Turbines Generator Charge Controller, Waterp. Color: 48v, Condition: New. Listed at 84.02 USD. 1. Verify that the wind turbines output voltage matches the rated voltage of the battery.2. Wire in the following order, first connect the positive and negative terminals of the battery, and then connect the three-phase voltage output of the fan.3. Please carefully connect the battery and the wind turbines to the controller according to the instructions. Connecting the reverse polarity or the wrong position will cause the system to work abnormally and may even cause damage to the system components.4. Although the controller has taken protective measures against various possible accidents, it is strongly recommended that users strictly abide by the operating procedures to prevent damage to the battery and controller.5.When the controller red (BRAKE) indicator is on, the battery is fully charged, the wind turbines is automatically braked, or the brake is automatically activated due to overcurrent protection Package list 1x Controller Specifications Rated battery voltage: 48V/24V/12V Wind generator braking voltage: 60V Wind generator recover voltage: 54V Protection class: IP67 Wiring: 1. Connect the “+” and “-” of the battery to the positive and negative terminals of the battery of the controller. 2. Connect the three-phase output voltage of the wind turbines to the three-phase voltage input terminal of the controller fan. 3. When manual brake is required, short the red thin wire to the positive battery, that is, complete the manual brake function. To cancel this function, just disconnect the thin red wire. Indicator status: - When the controller green power (BATTERY) indicator is on, it indicates that the battery is connected properly. - When the controller's green fan access (WIND) indicator flashes, it indicates that the wind turbines is connected. The speed of the flashing reflects the speed of the fan. - When the controller red (BRAKE) indicator is on, the battery is fully charged, the wind turbines is automatically braked, or the brake is automatically activated due to overcurrent protection.