DA40KM44A-380S650C is an AC/DC switching power converter. It adopts advanced resonant frequency modulation technology, high efficiency, large power, small size and reliable operation. The charging mode adopts automatic conversion between constant power and constant voltage, which effectively saves the charging time, with active power factor correction zero pollution to the power grid, wide input and output voltage range, using CAN2.0B communication protocol, with intelligent charging function, with intelligent monitoring fault alarm protection; built-in 14V independent auxiliary power supply for Car battery management system power supply. This power supply is specially designed for the charging of high-voltage batteries for new energy vehicles. It is completely in sync with the world's leading automotive power supply manufacturers, and all performance indicators have reached or surpassed international counterparts, and have been operating for longer. This series of power supplies can also be applied to various fields that require constant voltage and constant current power.