Charge controllers are also known as power regulators, “regulators” or “charge controllers”, and there are for loads of 15, 20, 25, 30, 35, 40, 45 and 50 amps for voltages of 12 and 24 volts, they are necessary to control the charge and discharge of batteries or accumulator within a solar installation. You can find them at any hardware and electrical supply stores from $20 to $300 USD. Charge regulators are installed between the solar panels and the battery to control the state of charge of the battery.
The Solar Charge Controller is a low cost, pulse width modulated charge controller, usually with an internal temperature sensor. Furthermore, they are capable of charging batteries in three stages, initial stage, absorption stage, and a final float stage.
The Solar Charge Controller is protected against excess current, short circuits, and reverse connection of solar panels or batteries.
The Solar Charge Controller is in charge of controlling the state of charge of the batteries, it is installed between the solar panels and the batteries, within a photovoltaic solar installation, thus allowing the battery to be overloaded or discharged. The purpose of the Solar Charge Controller is to provide greater durability to the battery, avoiding inappropriate discharges or unexpected voltage surges.
The Solar Charge Controller can incorporate LED lights that indicate the state of charge of the batteries in real time. They indicate three states: low battery, charging battery, and charged battery. The Solar Charge Controller usually comes with a one to two year warranty, and an average lifespan of eight to 10 years.
Using a solar charge regulator is a guarantee of the proper functioning of the photovoltaic system, in addition to protecting and caring for the batteries, thus prolonging their useful life for many years.