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The most important feature of this controller is intelligently tracking input voltage from solar panel, which could let solar panel always work at Maximum Power Point of V-A curve. Compared with normal solar charge controller, this MPPT controller could increase efficiency at 10%-30%.

Function: This MPPT controller not only has above mentioned special function, but also equipped with completely protecting and controlling functions:

Overcharge protection

Over-discharge protection

Battery Reverse Current Protection

Overloading Protection

Short Circuit Protection

Reverse Polarity Connection Protection

Schematic Diagram: Picture 2 shows typical 12V battery solar charge system V-A curve.

Normal Solar Charge Controller: Solar Panel works at point A state, the solar panel working voltage is a little higher than battery voltage.

Charge Voltage: UA=13.2V

Charge Current: : IA=9.8A

Charge Power: PA=13.2*9.8=129.36w

Area in drawing: 1+3

MPPT Solar Charge Controller: Solar Panel works at point B state, the solar panel working voltage is much higher than battery voltage.

Charge Voltage: UB=18.4V,

Charge Current: : IB=9.3A

Charge Power: PB=18.4*9.3=171.12w

Area in drawing: 1+2