The main function of a charge controller (also know as a charge regulator or battery regulator) is to safely charge a battery at the correct charge rates and protect the battery from overcharge.
Charge controllers are available in a variety of types and have several different applications. We offer a wide selection of solar charge controllers, solar lighting controllers, AC chargers and much more.Read more +
People often ask us how charge controllers actually work and what do they do in a solar power system? Or, why do I even need a solar charge controller - can't I just connect my solar panels up directly to my batteries?
Solar charge controllers will protect your batteries from being overcharged by your solar panels and it will block any reverse current from the batteries at night, 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.
The Low Voltage Disconnect (LVD) feature allows you to connect a DC load that is the same voltage as your battery bank and have the controller turn it off when the battery bank is low. This protects the batteries by preventing completely draining the batteries, also known as "deep discharging."
Learn more about solar charge controllers, including MPPT vs. PWM solar charge controllers, in our educational article: "What is a Solar Charge Controller."