Ⅱ. Charge controller efficiency
People always neglect charge controller efficiency easily. Because the price of the controller is relatively cheap, accounting for less than 10% of the whole solar power generation system, it has not attracted everyone’s attention. However, we must pay attention to the fact that controller efficiency directly affects efficiency of the whole solar power generation system.
At present, there are two kinds of solar controllers on the solar market. One is MPPT solar controller and the other is PWM solar controller. The PWM controller is a pulse width modulation controller, which is controlled by switching. The efficiency of PWM controller is only 75%.
For example, when a customer buys 3000W solar panels, but actually only 2250W is working, and the rest of 750W solar panels are wasted, which is a great loss for customer because a quarter of electricity generation is wasted. However, MPPT controller is different. The efficiency is as high as 99%. Not only the charging is quite stable, but also battery protection is comprehensive, so we recommend customers to use MPPT solar charge controller.