Marsrock IP68 Waterproof 10Amp 12V 24V Auto PWM Solar Intelligence Charge Controller for Solar Panel and Storage Battery Charge System

Install step: 1.This controller can work under 12V or 24V system voltage, please connect the battery when using, the controller will automatically identify the battery voltage and start to work. If the digital tube of the 12V system displays "0"; If it is 24V, the digital tube of the system will display "1", and the indicator lamp of the battery will be on, otherwise, please check whether the connection is correct. 2.Connect it to solar panels' "+" and "-" poles: if there is sunlight, the solar panel indicator will be on, otherwise, please check whether the connection is correct. 3.Connect it to the load "+" and "-" poles: connect the load connection wire to the load output end of the controller, and the current shall not exceed the fixed current of the controller. Attention: 1. The controller will identify the battery voltage when it is powered on, please connect the battery when using, and ensure the connection is reliable.  2. The controller will generate heat during operation. It is recommended to install it in an environment with ventilation and heat dissipation.  3. The controller will test the ambient temperature to compensate the battery charge, and try to put the battery and the controller in the same environment.  4. Choose cable connection with sufficient capacity to avoid excessive loss on the line and wrong judgment of the controller.  5. The controller is designed with a common positive pole. If grounding is required, please ground the positive pole. It is very important that the battery is always full, at least once a month, otherwise the battery will suffer permanent damage. The battery can only be fully charged when there is more energy coming into it than the load USES. Keep this in mind when configuring your system.