Method for preventing erroneous loading of component-to-be-loaded on main body side apparatus, component-to-be-loaded and battery pack

摘要

A battery pack for being slidably loaded on an electronic apparatus. The battery pack has an approximately square-pole shaped battery case with first and second end surfaces and side surfaces disposed between the end surfaces. The battery case has, an erroneous loading prevention groove on one part of a side surface, commencing at a corner of one end surface and extending in the sliding direction.