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Solar charge controller

Solar_Charge_Controller.jpgThe charge controller is the component that senses battery voltage and regulates the battery charging.

(This component is only used in systems that have a battery backup.)

The primary function of the controller is to protect your batteries from being overcharged by your solar panels and it will block any reverse current (from the batteries) as well.

It constantly monitors your battery backup, and supplies power to charge them when needed. The other important function is making sure the batteries are never undercharged, so that you have maximum available power in the event of a blackout or power loss.

Type of Solar Charge Controller

There are three types solar charge controllers: MPPT, PWM, and PWM shunt controllers.

A PWM (Pulse Width Modulated) charge controller is the traditional style. They are robust, inexpensive and widely used in PV applications.

PWM shunt controllers are used less often and mostly in applications where electrical interference is an issue.

The MPPT (Maximum Power Point Tracking) charge controller is the shining star of today's PV systems. These controllers actually detect the optimum operating voltage and amperage of the solar array and match that with the battery bank. The result is additional 15-30% more power out of your array versus a PWM controller. Although the MPPT controller is more expensive than its PWM counterpart, it is generally worth the investment for any solar electric system over 200 watts.

Please contact for datasheet and quotation.