AP MPPT solar charge controller 100A

To charge the battery, the output voltage of the solar panel must be higher than the current voltage of the battery, if the voltage of the solar panel is lower than the voltage of the battery, the output current will be close to 0. Therefore, for safety reasons, when the solar panel is manufactured, the peak voltage (Vpp) of the solar panel is about 17V, which is set based on the standard when the ambient temperature is 25°C.

The traditional solar charge and discharge controller is a bit like a manual gearbox. When the engine speed increases, if the gear of the gearbox is not increased accordingly, it will inevitably affect the speed of the vehicle. But for the traditional controller, the charging parameters are all set before leaving the factory, just like the gear of the car is fixed at 1st gear. So no matter how hard you step on the accelerator, the speed of the car is limited.

The MPPT controller is different, it is automatic. It automatically adjusts the gear according to the engine speed, always keeping the car running at the most reasonable level of efficiency. That is to say, the MPPT controller will track the maximum power point in the solar panel in real time to exert the maximum efficiency of the solar panel. The higher the voltage, the more power can be output through maximum power tracking, which improves the charging efficiency.

solar charger controller running diagram