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Controllers/Solar Regulators

A charge controller, also known as a solar regulator, is a regulator that goes between the solar panels and the batteries. A charge controller is used to regulate the voltage and current coming from the solar panels and going to the battery. As the input voltage from the solar array rises, the charge controller regulates the charge to the batteries preventing any over charging.
A controller can also provide a direct connection to appliances, while continuing to recharge the battery.
Modern charge controllers use pulse width modulation (PWM) to slowly lower the amount of power applied to the batteries as the batteries get closer and closer to fully charged. The newer Maximum Power Point Tracking (MPPT) controllers are even better. MPPT charge controllers allow your solar panels to operate at their optimum power output voltage, improving their performance by as much as 30%. They can also match the output of the solar panels to the battery voltage to insure maximum charge (amps). MPPT charge controllers are more expensive that PWM charge controllers, but the advantages are worth the cost. If you can afford it, you should definitely use an MPPT charge controller.


Plasmatronics PL20 solar controller
Outback MMPT solar controller

 

 

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Controllers/Solar Regulators
Eco Friendly Energy Solutions - iSustain Australia