1Multiple synchronous rectifier technology ensures high conversion efficiency of solar controller under low power charging environment. 2Advanced MPPT (maximum power point tracking) technology, the tracking efficiency is not less than 99.5%, compared with the ordinary PWM algorithm, the efficiency is improved by 15 ~ 20%. 3High quality electronic components, advanced power conversion circuit, maximum conversion efficiency up to 98%, full load efficiency up to 97%. 4Made of high quality aluminium alloy material, not easy to damage, sturdy and durable. 5Supports data storage, storage time is up to 10 years.Condition: 100% Brand NewItem Type: Solar Charge ControllerMaterial: Aluminium Alloy Color: As shown in the pictureStyle: 10A, 20A, 30A(Optional)Size: Approx.155x132x76mm/6.1x5.2x3inWeight: Approx.1345g/47.4oz Model MPPT-MINI-10A MPPT-MINI-20A MPPT-MINI-30A System identification voltage range 12V System: DC9V-DC16V 24V System: DC18V-DC32V Photovoltaic panel open input voltage range 20V ~ 100V (12V system) 40V ~ 150V (24V system) Maximum charging current 10A 20A 30A PV Maximum input power (12V) 150W 250W 400W PV Maximum input power (24V) 300W 500W 800W Maximum current output 10A 15A 15A MPPT efficiency 99.5 Conversion efficiency 96 Rated system voltage 12V System 24V System 12V System Defaults Over voltage (over discharge) 14-18V 28-36V The default 16V Over voltage return 13-17V 26-34V The default 15V Limiting charging voltage 12.9-16.9V 25.7-33.7V The default 14.9V Balanced charging voltage 12.7-16.7V 25.4-33.4V The default 14.7V Boost