A battery charger supporting 3C (computer, communication, consumer electronics)
products such as a mobile telephone, a PDA, a notebook computer, a digital camera,
a digital video camera, etc. The battery charger is constructed to include a body,
a circuit board, a reel assembly, an outlet lead wire, a rotable reel, a securing
axle, a slide switch, and a two-pinned plug. Apart from a terminal at one end of
the retractable outlet lead wire being adapted to enable connecting to a jack of
a mobile phone and thereby charge the mobile phone, the battery charger is also
configured with a battery recess that supports inserting of a mobile phone battery
therein, whereby charging of the mobile phone battery can be accomplished.