Solar Charge Controllers

If a solar power system uses batteries, it will also require a solar charge controller. They work to regulate the power as it moves from the solar panels to the batteries. When overcharged, the life of a battery is shortened, and a good charge controller will make sure that this doesn’t happen. You can go to solar power battery if you are interested in learning more about solar batteries.

Although there are a number of different types of charge controllers, the basic function they have in common is to stop the charging process once the voltage in a battery reaches a certain level. Previously, most charge controllers had mechanical relays, which opened and closed the circuit.

In more recent charge controllers, pulse width modulation (PWM) is used to gradually lower the amount of power provided to the batteries as they get closer to a fully charged state. PWM extends battery life even further, as it reduces stress on the battery. It can also keep batteries in a completely charged state, or “floating,” indefinitely. PWM chargers are more complicated, but they tend to be more durable, as they don’t have any breakable mechanical connections.

The most advanced type of solar charge controller uses maximum power point tracking, or MPPT. The main benefit of MPPT controllers is their ability to convert extra voltage into amperage. This makes a practical difference in a couple of areas.

These features are valid for any solar power system, regardless of the voltage level involved. Most solar panels provide more voltage than the batteries require. By converting the extra voltage into amps, MPPT charge controllers reduce the time necessary to completely charge the batteries, while maintaining an optimal voltage level. A solar power system with this type of charge controller will provide power more efficiently.

MPPT charge controllers also make a difference with regard to power loss. All electricity in a home system travels from device to device along wires, and a certain amount of power is lost whenever this occurs. Higher voltage electricity sees less loss. A PWM charge controller used in a system with 12v batteries, for example, would use electricity of about 18v. An MPPT controller can use the highest voltage of any available charge controller. For this reason, MPPT controllers see less loss.

In comparison to PWM controllers, MPPT charge controllers are somewhat more expensive, but their performance is significantly enhanced. It’s highly recommended that, if you can afford it, you go with an MPPT charge controller. The latest solar charge controllers also come with the ability to prevent reverse-current flow. In some cases, at night, the batteries may begin to send power back to the solar panels. This power loss can definitely be frustrating. At these times, a charge controller will open the circuit, preventing any power from being transferred back to the solar panels.

When it comes to reducing costs and eliminating emissions and reliance on foreign oil, 12 volt solar battery chargers are a surprisingly easy-to-build and versatile choice. You can read 12 volt solar charger for more in solar interesting info about solar chargers.

Can you build a solar panel for under 0? You can get more information by looking at this guide Homemade Energy Review. In this guide, you will get specific instructions on what is best to build based on the size of your house and your location. You will also get step-by-step diagrams on how to build your own solar power system.