Folding mobile communication terminal

A folding mobile communication terminal is provided with a contact for charging and a protective cover that covers the contact. The protective cover is connected to a coil spring and is movable. When the communication terminal is installed on a battery charger, the protective cover is pushed up by a convex portion of the battery charger, exposes the contact and enables the connection of the contact and a terminal of the battery charger. When the communication terminal is detached from the battery charger, the protective cover is returned to a position in which the protective cover covers the contact by the resilience of the coil spring.