To provide a battery pack in which electrical connection can be maintained always even in the case vibrations are applied or strong impacts are applied to a cellular phone set in which a battery pack is housed.
This is the battery pack on which a connecting part having an electrode exposed at the end face of the battery body 1 is installed, and when a contact piece of a connector of the main body of the cellular phone set or the like is in a state contacting the electrode on the face of the connecting part adjoining the end face of this connecting part, a recess 11 or a protruding piece that is connected to the protruding piece or the recess installed on the connector of the main body of the cellular phone set or the like is installed.
COPYRIGHT: (C)2008,JPO&INPIT
Sadao Yamagami
Masatsugu Naka
Taiki Teraoka
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Shuji Matsumura
Kobayashi Kunito