What is a charge controller? A 2 way DC Battery Charger. How
does a charge controller work? A charge controller, or charge
regulator is similar to the voltage regulator in your car. The
charge controller's job is to regulates the voltage and current
coming from somewhere, and going somewhere else. Charge
controllers are always hooked up to a battery, the question is
whether you are filling it up (charging the battery) or
unloading the power (discharging the battery). Let's look at
each case individually: Charging a battery with a charge
controller: When you are filling your battery up with juice, or
charging it, you want to put power into the box, but you don't
want to hurt the battery. Batteries are designed to be charged
in voltage and amperage ranges, to protect the materials inside.
Apply too much power and you cook the inside of the battery.
Apply too little power and the battery will not charge. So a
charge controller takes the power from somewhere (usually a
solar panel installation, wind, or solar, an