Solar Charge Controller

Solar Charge Controllers

Solaxo charge controller is basically a voltage and/or current regulator to keep batteries from overcharging. It regulates the voltage and current coming from the solar panels going to the battery. Most “12 volt” panels put out about 16 to 20 volts, so if there is no regulation the batteries will be damaged from overcharging. Most batteries need around 14 to 14.5 volts to get fully charged.

A solar charge controller is available in two different technologies, PWM and MPPT.

PWM Solar Charge Controller

A PWM solar charge controller stands for “Pulse Width Modulation”. These operate by making a connection directly from the solar array to the battery bank. During bulk charging, when there is a continuous connection from the array to the battery bank, the array output voltage is ‘pulled down’ to the battery voltage. As the battery charges, the voltage of the battery rises, so the voltage output of the solar panel rises as well, using more of the solar power as it charges. As a result, you need to make sure you match the nominal voltage of the solar array with the voltage of the battery bank.

A 12V solar panel can charge a 12V battery. A 24V solar panel or solar cluster (two 12V panels wired in arrangement) is required for a 24V battery bank, and 48V exhibit is required for 48V bank. In the event that you endeavor to accuse a 12V battery of a 24V solar panel, you will toss over portion of the panel’s energy away. On the off chance that you attempt to charge a 24V battery save money with a 12V solar panel, you will discard 100% of the panel’s potential, and may really deplete the battery too.

MPPT Solar Charge Controller

An MPPT solar charge controller stands for “Maximum Power Point Tracking”.It will gauge the Vmp voltage of the panel, and down-changes over the PV voltage to the battery voltage. Since control into the charge controller levels with control out of the charge controller, when the voltage is dropped to coordinate the battery bank, the current is raised, so you are utilizing a greater amount of the accessible power from the panel. You can utilize a higher voltage solar cluster than battery, similar to the 60 cell ostensible 20V grid-tie solar panels that are all the more promptly accessible. With a 20V solar panel, you can charge a 12V battery bank, or two in series can energize to a 24V battery bank, and three in series can energize to a 48V battery bank. This opens up an entire scope of solar panels that now can be utilized for your off-grid solar framework.