https://www.anern.com/products/solar-controller/ A solar controller, also known as a solar charge controller, controls the electrical energy generated by solar panels entering the battery. Almost all solar power systems using battery power are in great need of solar power charge controllers. The primary function of solar controllers for sale is to ensure that the battery is charged correctly and to prevent overcharging. As a professional solar controller company in China, Anern solar light provides solar controller for sale at great prices!