Feature: 1. HIGH EFFICIENCY: Built in maximum power point tracking algorithm can significantly improve the energy utilization rate of the photovoltaic system, and increase the charging efficiency by 15%‑20% compared with the traditional PWM method 2. HIGH CONVERSION: The product boasts an optimal MPPT tracking efficiency of up to 99.9%, and advanced digital power technology increases the energy conversion efficiency of the circuit to 98% 3. APPLICABLE BATTERIES: Support charging procedures for various types of batteries, such as gel batteries, sealed batteries, open batteries, customized batteries, etc. 4. AUTOMATIC ADJUSTMENT: Adopts limited current charging mode. When the solar panel power exceeds a certain level and the charging current is higher than the rated current, the controller will automatically reduce the charging power to make the charging current reach the rated value 5. INTELLIGENT IDENTIFICATION: Support capacitive load instantaneous high current start. Automatic recognition of battery voltage support. With fault LCD display, easy for users to identify system faults 6. OVER TEMPERATURE PROTECTIVE: The built in over temperature protection mechanism ensures that when the temperature exceeds the set value of the device, the charging current decreases linearly with the temperature and stop discharging, thereby reducing the temperature rise of the controller and avoiding high temperature damage 7. LONG SERVICE LIFE: Temperature compensation and automatic adjustment of charge and discharge parameters help to improve battery life. 0V Lithiumion battery charging function. Use metal shell, bring better heat dissipation performance 8. PERFECT ELECTRONIC PROTECTION FUNCTION: Solar panel charging input voltage is high, reduce the size of the solar connection line, reduce the system cost. The combination of multiple tracking algorithms can accurately track the optimal working point on l‑V curve in a very short time Specification: Item Type: MPPT Solar Charge Controller System Voltage: 12V 24V 36V 48V Auto No Load Loss: ≤0.4W Maximum Solar Input Voltage: 180V (25℃), 150V (-25℃) Battery Voltage: 9~70V Maximum Power Point Voltage Range: Battery voltage plus 2V~120V Rated Charging Current: 60A Rated Load Current: 20A Maximum Photovoltaic System Input Power: 720W 12V 1440W 24V 2160W 36V 2880W 48V Conversion Efficiency: ≤98% MPPT Tracking Efficiency: >99% Temperature Compensation Coefficient: -2mv/℃/2V(default) Operating Temperature: -10℃~+65℃ Waterproof Class: IP21 Altitude: ≤3000m Product Size: Approx. 214 x 115 x 50mm / 8.43 x 4.53 x 1.97in. Package List: 1 x Controller4 x Screw4 x Support1 x User Manual Note: 1. Because the voltage processed by the controller exceeds the maximum safety limit of human body.2. The controller has no internal components that need to be maintained. Therefore, do not attempt to remove or repair the controller.3. Install the controller indoors to prevent component exposure and water intrusion.4. During operation, the heat sink may reach a very high temperature. Therefore, install the controller in a place with good ventilation.5. It is recommended to install a fuse or circuit breaker outside the controller.6. Before installation and wiring, make sure to disconnect the photovoltaic array and the fuse close to the battery terminals, or circuit breaker connection.7. After installation, check whether all connections are firm and reliable to avoid dangers caused by loose connections.