20A PWM Solar Charge Controller, 12V/24V, Dual 5V USB Output, for Solar Panels

【Automatic Identification】The controller can automatically identify the 12/24V system voltage, connect the positive terminals of the solar panel, battery, and solar charge controller together, and utilize the MOSFET series negative control circuit. 【High Efficiency】The solar charge controller adopts an optimized control chip, which effectively achieves three-stage PWM charging, and the charging efficiency is 15% higher than comparable products. 【Good Heat Dissipation】The solar panel charge controller's casing is made of high-quality, flame-retardant PC material, which is robust and durable, and the back cover is made of aluminum alloy for heat dissipation, greatly improving heat dissipation performance. 【Easy to Operate】The solar controller's large LED display clearly shows the status and operation data, and two function power buttons allow you to switch modes and configure parameters. 【Multiple Applications】The battery panel regulator has a selectable charge control mode, a resettable night light timer function, discharge capacity control, and a discharge meter. (1) Connect the battery. Note: The battery terminals must be securely installed, and the recommended installation distance should not exceed 10 meters. The recommended installation distance should not exceed 150 mm. (2) Connect the load; (3) Connect the photovoltaic array; (4) Power on the controller and connect the battery. Identify the controller's system voltage and observe the battery status. If it does not function correctly, refer to the troubleshooting section. Voltage: DC 12V/24V automatic identification; Maximum input voltage: 50V; Applicable battery: Lithium ternary battery, lithium iron phosphate battery, 12/24V lead-acid battery; Self-consumption: 10mA; Charging method: PWM; Dual USB output: 5V/2.1A; Temperature compensation: -24mV/℃ for the 12V system