A battery holding apparatus holds a battery pack on a battery mount of an electronic device such as a portable telephone. The battery holding apparatus includes a holding member and a hook assembly. The holding member is provided on a first end of the battery mount and has formed thereon a claw fitted into a first recess formed on a first end of the battery pack. The hook assembly is provided on a second end portion of the battery mount opposite to the first end thereof and includes a spring and a protrusion. The protrusion is urged by the spring pressure produced by the spring into constant engagement with a second recess formed in a second end of the battery pack opposite to the first end thereof so as to split the spring pressure into a horizontal pressure and a vertical pressure. The horizontal pressure urges the second end of the battery pack against the holding member to eliminate any horizontal play of the battery pack on the battery mount. The vertical pressure urges the second end of the battery pack against the battery mount to eliminate any vertical play of the battery pack on the battery mount.