What is the difference between MPPT controller and PWM controller?
PWM uses the digital output of the microprocessor to control the analog circuitry. It adopts strong charging, balanced charging and floating charging in three stages. The PWM solar controller solves the problem that the battery is not full and the battery life is short, but the solar panel is not fully utilized.
MPPT solar controller, refers to the solar controller with "Maximum Power Point Tracking" function, MPPT solar controller can detect solar panel voltage and current in real time, and continuously track the maximum power (P = U * I) The system always charges the battery with maximum power. The MPPT tracking efficiency is 99%, the whole system power generation efficiency is as high as 97%, and the battery charging phase is divided into MPPT charging, constant voltage charging and constant voltage floating charging.