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SOLAR CHARGE CONTROLLER HAS MAINLY THREE BASIC FUNCTION :
- TO LIMIT THE VOLTAGE FROM THE SOLAR PANEL AND REGULATE THE SAME SO AS NOT TO OVERCHARGE THE BATTERY.
- NOT TO ALLOW THE BATTERY TO GET INTO DEEP DISCHARGE MODE WHILE DC LOADS ARE USED.
- TO ALLOW DIFFERENT DC LOADS TO BE USED AND SUPPLY APPROPRIATE VOLTAGE.
A charge controller limits the rate at which electric current is added to or drawn from electric batteries. It prevents overcharging and may prevent against overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk. It may also prevent completely draining (“deep discharging”) a battery, or perform controlled discharges, depending on the battery technology, to protect battery life.
A solar charge controller is needed in virtually all solar power systems that utilise batteries. The job of the solar charge controller is to regulate the power going from the solar panels to the batteries. Overcharging batteries will at the least significantly reduce battery life and at worst damage the batteries to the point that they are unusable.
A solar charge controller or regulator is a small box consisting of solid state circuits pcb which is placed between a solar panel and a battery. Its function is to regulate the amount of charge coming from the panel that flows into the battery bank in order to avoid the batteries being overcharged.