In the system, what are the criteria for selecting the controller?

1. The open circuit voltage Voc of the solar panel should be lower than the maximum input voltage of the controller

2. The working voltage Vmp of the solar panel must be higher than the voltage of the battery end of the controller, and it will work normally if it is greater than 2V.

3. The overall output power of the solar cell cannot exceed the maximum input power specification of the controller

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