
A battery holder comprises first and second caps and a cylindrical socket. The socket forms two spaces therein separated by an abutment midway of the socket and each opening at one end of the socket. Each space holds a battery with the central pole contact thereof positioned at the end of the socket. The socket is positioned selectively with one battery or the other engaging the contacts located at the first cap. Clamping means holds the caps together with the socket there between. The socket fo...











