Solar charge controller can track the maximum power point of the solar panel and control charging battery with high efficiency and intelligence.It can also protect the battery while charging.
The PWM controller is in essence a switch that connects a solar array to a battery. The result is that the voltage of the array will be pulled down to near that of the battery.
The MPPT controller can adjust its input voltage to harvest the maximum power from the solar array and then transform this power to supply the varying voltage requirement, of the battery plus load.
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