Specialty Concepts Charge Controllers

An off-grid solar system must have all the necessary equipment to generate, supply and store solar energy onsite. Off-grid solar systems are also referred to as standalone solar power systems, as they operate without a connection to any external power source. Off-grid solar systems are made up of 12 volt solar panels (or modules) that can be used individually or combined into a single array. The solar panels use a solar charge controller to send power to charge solar batteries and a solar inverter to convert direct current (DC), which the solar panel generates, to useable alternating current (AC). Off-grid solar systems are ideal for remote rural areas and applications where power sources are either impractical or unavailable.

Solar charge controllers are used to deliver power from solar panels to system loads and to solar batteries. When the batteries are nearly full, the charge controller will taper off the charging current to maintain the required voltage to fully charge the batteries and keep them topped off. By regulating the voltage, the charge controller protects the batteries from overcharging and undercharging. More advanced charge controllers can monitor temperature and adjust battery charging accordingly. This is referred to as temperature compensation. The battery is charged to a higher voltage in cold temperatures and a lower voltage in warm temperatures. Many charge controllers also include on-site and remote data monitoring.

Specialty Concepts Automatic Sequencing Chargers (ASC) are solid state charge controllers for use in PV systems with currents up to 16 A. They are available in 12 and 24 V models with options including battery temperature compensation.

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$272.80
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