For the necessary products accompanying the vehicle, there is no need for fixed wiring construction, and it is convenient to store and carry with the vehicle. Supports multi-position current adjustment, can be adapted to old household sockets, no need to modify the entry line, suitable for rental users with no fixed installation conditions, equipped with a visual display, can real-time synchronize charging operation data; The reservation of low-peak charging function can optimize the cost of electricity consumption and meet the demand for night peak charging.