Abstract: A swivel-jointed voltage-stepping charger comprising a flexible hose, a transformer, a power socket/signal input-output port, an engaging bracket, a supporting frame and two charging stands. The flexible hose is a cylindrical tube that can be bent into a variety of final configurations. The transformer is connected to one end of the flexible hose. The power socket/signal input-output port has a plurality of connection terminals therein and is connected to the other end of the flexible hose away from the transformer. The engaging bracket joins up with the power socket/signal input-output port and the flexible hose. The supporting frame is firmly attached to the engaging bracket. Each charging stand has a signaling port and a ball-in-socket joint installed on the front and back surface of each charging stand. The two ball-in-socket joints are each fastened to a linkage sheath and a linking rod.