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Solar Charge Controllers ..


Charge controllers come in various types. Solar charge controllers regulate the charge from a solar panel array to a battery bank.


• PWM: A PWM (Pulse Width Modulated) solar charge controller is the traditional style. They are robust, inexpensive and widely    used in solar panel applications.
• PWM-Shunt: PWM shunt controllers are used less often and mostly in applications where electrical interference is an issue.
• MPPT: The MPPT (Maximum Power Point Tracking) solar controller is the shining star of today's solar systems. These   controllers actually detect the optimum operating voltage and amperage of the solar panel array and match that with the    battery bank. The result is additional 15-30% more power out of your solar array versus a PWM solar controller. Although the    MPPT solar charge controller is more expensive than its PWM counterpart, it is generally worth the investment for any solar    electric system over 200 watts.

Since renewable energy power systems almost always gather power and store it in batteries, almost every system requires a charge controller. A solar charge controller will protect your batteries from being overcharged by your solar panels and it will block any reverse current (from the batteries) as well. Solar charge controllers will actually protect every aspect of your solar power system from your batteries to your solar panels. Temperature sensors are an inexpensive addition that help the charge controller more accurately regulate the charge of the battery bank.



    • 15 & 30 amps at 12/24 or 48 volts
    • Morningstar's ProStar™ is the world's leading mid-range solar controller for both professional and consumer    applications.


    • 45 & 60 amps at 12-48 volts
    • Morningstar's TriStar™ Controller is a three-function controller that provides reliable solar battery charging, load    control or diversion regulation.


    • 45 or 60 amps at up to 150 volts open circuit
    • The TriStar MPPT™ solar controller with TrakStar™ Technology is an advanced maximum power point tracking (MPPT)    battery charger for off-grid photovoltaic (PV) systems up to 3kW.