This series of products are based on polyphase synchronous rectifier technology and sharing-one-cathode design. Adopting the advanced dual core processor architecture and MPPT control algorithm, it has features such as high response speed, high reliability and high standard of industrialization, etc. It can quickly track the maximum power point of pv array and get real-time access to the biggest energy of solar panels in any environment.   Features: Advanced Maximum Power Point Tracking(MPPT) Technology: Tracking efficiency not less than 99.5%, 15%-20% higher than common PWM algorithm.  High Quality Components and Advanced Power Conversion Circuit: The max. conversion efficiency can reach more than 98%; full-load efficiency can reach 97%.  Combination of Various Tracking Algorithm: JN-MPPT series can track the maximum power point quickly.  Four Sections of Charging Ways: MPPT charge, equalizing charge, improving charge and floating charge.  12V/24V/48V Automatic Identification: Users can set the voltage according to actual need.  With Current-limiting Charging Mode: When the charging current exceeds the rated current, the controller will limit the charging current to the rated current charge.  With Internal Temperature Detection Function: When reaches 75°C, charging current is limited to half of the rated current; when reaches 90°C charging and load are shut off.  Multiple Protection: With over charge/over discharge/over temperature/over load and reverse connection protection.  The battery temperature compensation function.   Specifications: Current: 10A / 20A / 30A / 40A(Optional);  System Voltage: 12V/24V/48V;  *Photovoltaic Max. Input Voltage: 12V System: 20V~100V;  24V System: 40V~150V(suggest lower than 145V);  48V System: 80V~150V(suggest lower than 145V);  *Photovoltaic Max. Input Power: 10A: 120W/12V, 240W/24V, 480W/48V;  20A: 240W/12V, 480W/24V, 960W/48V;  30A: 360W/12V, 720W/24V, 1440W/48V;  40A: 480W/12V, 960W/24V, 1920W/48V;  Rated Working Current: 10A / 20A / 30A / 40A;  Output Rated Current: 10A / 15A / 20A / 20A;  MPPT Efficiency: >99.5%;  Conversion Efficiency: >98%;  Over Charge Voltage: 16~17V, *nV(Default 16V, *nV);  Over Charge Recovery: 15~15.5V, *nV(Default 15V, *nV);  Charging: 15.5~16V, *nV(Default 15.5V, *nV);  Equalizing Charge Voltage: 15~15.5V, *nV(Default 15.2V, *nV);  Boost Charge Voltage: 14~15V, *nV(Default 14.4V, *nV);  Boost Charge Recovery: 12.3~13.5V, *nV(Default 13.2V, *nV);  Floating Charge Voltage: 13.2~14.0V, *nV(Default 13.8V, *nV);  Over discharge Voltage: 9.8~11.8V, *nV(Default 10.8V, *nV);  Over Discharge Recovery: 12.0~13.0V, *nV(Default 12.6V, *nV);  Note: The above parameters are based on the 12V, "n" represents the integer multiple of the 12V(2, 4).