| 摘要 |
A flat battery is configured such that a sealing plate which serves as a negative electrode surface seals a battery case which serves as a positive electrode surface, with a gasket interposed therebetween. The flat battery is held in a resin case, and in this state the flat battery is contained in a battery package. The resin case includes an open end face through which the battery is inserted and removed, a side portion and a bottom portion which hold a side surface and/or a bottom surface of the battery, and a ring-shaped protrusion which protrudes radially inward from an edge of the side portion. The protrusion is supported on the edge in a bendable manner, and an inner diameter of the protrusion is smaller than an inner diameter of an exposed portion of the gasket. An emetic agent is applied to an outer surface of the resin case. |
