A portable data terminal includes a housing; a controller operating software and supported by the housing; a battery well formed in the housing; a male connector disposed in the battery well comprised of a plurality of male contacts; a battery pack for sea...

An embodiment of the present invention relates to a battery pack (100) including a plurality of bare cells (10), each having a cap assembly, a bottom positioned opposite to the cap assembly, and a side connecting the cap assembly and the bottom; a protecti...

Disclosed is a fuel cell having a structure capable of certainly supplying a gas by making effective use of a limited space while ensuring the portability of the fuel cell. A fuel cell of the present invention is characterized by including a proton conduct...