Features 1Advanced 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%. 2Using highquality components and advanced power conversion circuits the maximum conversion efficiency reaches over 98% and the full load efficiency reaches 97%. 3The structure is made of aluminum and can be used under various harsh conditions. Support data storage the storage time can be up to 10 years. 4Advanced multiphase synchronous rectification technology also has higher conversion efficiency in low power charging environment. The system adopts universal negative circuit which makes the system work more stable and reliable. 5In 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 for charging. Specification Condition: 100% Brand NewItem Type: Solar Charge ControllerMaterial: Aluminium Parameter Name Parameter Values (and Adjustable Ranges) Model JN-MPPT-BL (30-70A) Current Rating (A) 30 40 50 60 70 System Identification Voltage Range (V) 12V System: DC9V-DC16V 24V System: DC18V-DC32V 48V System: DC42V-DC60V PV Panel Open Circuit Input Voltage Range (V) 20V~100V (12V System) 40V~150V (Recommended Below 145V) (24V System) 80V~150V (Recommended Below 145V) (48V System) -- (96V System) Maximum Charging Current (A) 30 40 50 60 70 PV Maximum Input Power (12V) (W) 400 500 600 750 850 PV Maximum Input Power (24V) (W) 800 1000 1200 1500 1700 PV Maximum Input Power (48V) (W) 1600 2000 2400 3000 3400 PV Maximum Input Power (96V) (W) -- -- -- -- -- Output Maximum Current (A) 15 20 25 30 35 MPPT Efficiency 99.5% Conversion Efficiency 96% System Rated Voltage (V) 12V System 24V System 48V System 12V system default Overpressure (Overcharge) (V) 14~18V 2836V 5662V Default 16V Overpressure Return (V) 13~17V 2634V 5262V Default 15V Charging Limit Voltage (V) 12.9~16.9V 25.733.7V 51.662V Default 14.9V Balanced Charging Voltage (V) 12.7~16.7V 25.433.4V 50.862V Default 14.7V Increase The Charging Voltage (V) 12.4~16.4V 24.832.8V 49.662 Default 14.4V Increase The Charge Return Voltage (V) 11.2~15.2V 22.430.4V 44.862V Default 13.2V Floating Charge Voltage (V) 11.8~15.8V 23.631.6V 47.262V Default 13.8V Over Discharge Voltage (V) 8.8~12.8V 17.625.6V 35.2~ 51.2V Default 10.8V Over Discharge Return Voltage (V) 11.1~15.1V 22.230.2V 44.460.4V Default 13.1V Balanced Charging Time (H) 1/2/3 Hours Default 2H Increase Charging Time (H) 1/2/3 Hours Default 2H Device Address 1~99 Default 6 Light Control Turn-On Voltage (V) 5~11V Default 5 Light Control Off Voltage (V) 5~11V Default 6 Light Control Delay (H) 10min Temperature Compensation (C) 0~4 Default 4 Over Temperature Protection (C) 70 Current Reduction 90 Off Charging and DC Load Working Temperature (C) -20~50 Storage Temperature (C) -40~80 Humidity (C) 10%~90% No Condensation Weight Approx. 2796g / 98.6oz Product Size (mm) Approx. 254.5 x 170 x 97 mm / 10 x 6.7 x 3.8 in Package List 1 x Controller1 x English User Manual5 x Screw2 x Hanging Plate Note 1.Pleaseallow02cmerrorduetomanualmeasurement.Thanksforyourunderstanding.2.Monitorsarenotcalibratedsameitemcolordisplayedinphotosmaybeshowingslightlydifferentfromtherealobject.Pleasetaketherealoneasstandard.