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MPPT Charge Controllers

A solar charge controller, also known as a solar charge regulator, is a device that is used to regulate the charging of a battery from a photovoltaic (PV) panel. It is an important component of a PV system, as it ensures that the battery is charged safely and efficiently.

Solar charge controllers have several functions, including:

  1. Preventing overcharging: The controller monitors the battery's voltage and reduces the charging current from the PV panel when the battery is fully charged. This prevents the battery from being damaged by overcharging.

  2. Protecting against over-discharge: The controller also monitors the battery's voltage and disconnects the load when the battery reaches a low voltage level. This prevents the battery from being damaged by deep discharge.

  3. Maximizing power output: The controller adjusts the charging current to match the maximum power point of the PV panel, which maximizes the amount of power that the panel can generate.

Solar charge controllers are available in various types, such as pulse width modulation (PWM) controllers and maximum power point tracking (MPPT) controllers. PWM controllers are more affordable, but MPPT controllers are more efficient and can improve the overall performance of the PV system.