Also referred to as solar regulators, charge regulators, or solar panel regulators, solar charge controllers regulate the voltage and current flowing in and out of your batteries to protect them from over charging or deep draining (becoming completely drained of energy). PVPower.com carries a wide range of solar charge controllers. Browse our selection by brand, price, or type to find the right solar charge controller for your system! Call a solar expert today with questions or for assistance at 866-274-0642