Collection: Solar Charge Controllers

If your solar panels charge a battery, you generally need a compatible charge controller between them. Check your existing equipment first, as some all-in-one systems have a controller built in. 

Check your battery voltage, the solar panels’ total wattage and voltage, and the controller’s rated charging current and maximum solar input voltage. The right size depends on the whole system, not just the wattage printed on one panel.

A solar charge controller manages the power flowing from your solar panels to your battery. It helps charge the battery at the right voltage and prevents overcharging.

Yes, if the controller supports your battery’s chemistry and the charging settings meet the battery manufacturer’s requirements. Check the specifications before connecting a lithium battery. 

Yes, provided the combined panel arrangement stays within the controller’s voltage, current and power limits. Panels wired in series and parallel produce different electrical outputs, so check the final array specifications before connecting them.

That depends on the model. Some controllers support both 12V and 24V systems, while others are made for a specific battery voltage. Always check the controller’s stated battery voltage range. 

They can charge a battery whenever the panels produce enough power and voltage for the controller to operate. Charging will usually be slower in low light, and each controller has its own minimum operating requirements.

Yes. Solar charge controllers are commonly used in battery-based caravan and off-grid systems. Choose one that matches your panels, battery and available installation space.

Follow the instructions for your specific model. Many controllers require the battery to be connected first so they can detect the system voltage before the panels are connected.