Brief description:MPPT30 20A solar controller applied to the solar photovoltaic system which is used to coordinate solar panels, storage battery and load. It is a very important assembly in the photovoltaic system. It is different from other solar controllers that it is add the comprehensive protection function makes the whole solar photovoltaic system operate efficiently and safely.MPPT30 20A solar controller can adjust automatically the working voltage of solar panels, which can make solar panels work consistently in the maximum power point of the V-A characteristic curve in a whole day. Compared with common solar controllers, it is equipped with temperature compensation function, can make the work efficiency of photovoltaic modules increased by 30%, and can observably prolong the life of the storage battery.Main features: Compared with normal solar charge controller, this MPPT controller could increase efficiency by 10%-30%* Can charge and discharge at the same time* Always keep the battery in full status* Battery over-charging /over-discharging protection* Prevent the battery from reverse charging to solar panels during nights* Reverse polarity protection for battery* Reverse polarity protection for solar panels* When the battery voltage is low, the controller will automatically cut off the load from the system. If the voltage of battery is back to normal and the load will restart working.* Thunder protection* The controller will automatically compensate the temperature of the charging voltage according to the changes of ambient temperatureParameters:Category: MPPT solar controllerModel: MPPT30 20ARated Voltage: 12V/24VMax Load current: 20AInput voltage range: 12V~20V/24V~40VLength≤1m Charge loop drop: ＜0.25VLength≤1m Discharge loop drop: ＜0.05VFull charge cut: 13.7V~14.4V/27.4V~28.8VLow voltage cut: 10.5V~11V/21V~22VTemperature compensation: -3mv/℃/cellNo load loss: ≤10mAMax wire area: 2.5mm2