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Dilong DA3K3M17E series 3.3kW OBC onboard charger adopts advanced all-digital resonant frequency modulation technology, which has high efficiency, high power, small size and reliable operation. The charging mode adopts constant power, constant voltage and constant current automatic state transition, which effectively saves charging time. With active power factor correction, zero pollution to the grid, wide input and output voltage range, using CAN2.0B communication protocol. With intelligent charging function, it has intelligent monitoring fault alarm protection function,programme function and fault inquiry function; it also has built-in 12V independent auxiliary power supply for power supply of car battery management system. This onboard charger product is specially designed for charging high-voltage batteries of new energy vehicles.