Abstract: A charger with replaceable electrical plugs includes a casing 1 comprising a lower casing 11 and an upper casing 12. An electronic power supply circuit 13 is accommodated inside the casing 1. The lower casing 11 has an opening 111 having a replaceable electrical plug 14 pivotally disposed therein to adapt to different specifications of electrical sockets used in different countries. The power supply circuit 13 may convert ac into low voltage dc for use by small electrical appliances. The upper housing 12 is provided with a tubular recess 122 pivotally provided with a cigarette lighter plug 15 which may fit into a car's cigarette lighter socket. The power supply circuit 13 may transform the car's high voltage dc into low voltage dc to provide electric power outdoors. Different replaceable electrical plugs 14 and 14' allow the charger device to be adapted for use in various different countries, which use various different power outlet structures.