Overcharge Protection
Overdischarge Protection
Battery Reverse Current Protection
Overloading Protection
Short Circuit Protection
Battery 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 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

Comparison: The power B is more than power A..
△P/ PA =(PB— PA)/ PA=32..3%
As a result of different manufacture of solar panels, different solar illumination intensity, different temperature, different efficiency of solar charge controller and so on. The effective power increase rate is 30%.

12 Watt JUTA Solar Panel
22 Volts 1 Amp
These units can be connected in series and/or parallel