Features 1、Advanced multiple synchronous rectification technology, high conversion efficiency in low power charging environment, the system adopts universal negative circuit, making the system work more stable and reliable. 2、Advanced MPPT maximum power point tracking technology, tracking efficiency is not less than 99.5%, compared with ordinary PWM algorithm, the efficiency is increased by 15% to 20%, using high‑quality components and advanced power conversion circuit, the maximum conversion efficiency can be 98 % above, the full load efficiency can be 97%. 3、The structure is made of aluminum and can be used under various harsh conditions. The combination of multiple tracking algorithms can achieve fast tracking of the maximum power point. 4、When the panel is partially blocked or a single block is damaged, the dual‑peak and multi‑peak tracking technology can accurately track the maximum power point, four‑stage charging method: MPPT balance charging‑supercharging‑floating charging. 5、12/24/48V automatic identification function, support data storage, storage time can be up to 10 years, in the current‑limiting charging mode, when the input power of the photovoltaic panel is too large and the charging current exceeds the rated current of the controller, the controller will limit the charging current to the rated current. 6、With internal temperature detection function, when the controller temperature rises to 70°C, the controller will limit the charging current to half of the rated current, when the temperature reaches 90°C, the controller will turn off charging and output, thereby control the temperature rise of the controller. 7、With battery temperature compensation function, it has a wide photovoltaic array operating voltage range (12V system, photovoltaic panel voltage up to 100V, 24V and 48V maximum voltage up to 150V). It has comprehensive protection functions such as overcharge, overdischarge, overtemperature, overload and reverse connection. Specifications Condition: 100% Brand New Item Type: Solar Charge Controller Material: Aluminum Model JN-MPPT-CL(50-120A) Current Rating (A) 50A, 60A, 80A, 100A, 120A (optional) System Identification Voltage Range (V) 12V System DC9V-DC16V 24V System DC18V-DC32V 48V System DC42V-DC60V Photovoltaic Panel Open Circuit Input Voltage Range (V) 20V-100V (12V System) 40V-150V (Recommend Below 145V) (24V System) 80V-150V (Recommend Below 145V) (48V System) MPPT Efficiency >99.5% Conversion Efficiency >96% System Rated Voltage (V) 12V System 24V System 48V System 12V System Default Value Over Voltage (Overcharge) (V) 14-18V 28-36V 56-62V Default 16V Over Voltage Return (V) 13-17V 26-34V 52-62V Default 15V Charging Limit Voltage (V) 12.9-16.9V 25.7-33.7V 51.6-62V Default 14.9V Balanced Charging Voltage (V) 12.7-16.7V 25.4-33.4V 50.8-62V Default 14.7V Boost Charging Voltage (V) 12.4-16.4V 24.8-32.8V 49.6-62V Default 14.4V Boost Charge Return Voltage (V) 11.2-15.2V 22.4-30.4V 44.8-62V Default 13.2V Floating Charge Voltage (V) 11.8-15.8V 23.6-31.6V 47.2-62V Default 13.8V Over Discharge Voltage (V) 8.8-12.8V 17.6-25.6V 35.2-51.2V Default 10.8V Over Discharge Return Voltage (V) 11.1-15.1V 22.2-30.2V 44.4-60.4V Default 13.1V Balanced Charging Time (H) 1/2/3 Hour Default 2H Boost Charging Time (H) 1/2/3 Hour Default 2H Device Address 1-99 Default 6 Light Control Turn-on Voltage (V) 5-11V Default 5 Light Control Turn-off Voltage (V) 5-11V Default 6 Light Control Delay (H) 10 Minutes Temperature Compensation (℃) 0-4 Default 4 Over Temperature Protection (℃) 70℃ current reduction, 90℃ off charging and DC load Working Temperature (℃) -20℃-50℃ Storage Temperature (℃) -40℃-80℃ Humidity (%) 10%-90%, no condensation Weight: Approx. 4545g / 160.3oz Package List 1 x Solar Charge Controller 5 x Screw 2 x Hanging Board