Abstract: A battery storage case includes: a case body having a storage section capable of having a battery accommodated therein; and a contact terminal attached to the storage section to be in contact with a positive or negative electrode of the battery to be stored in the storage section. The contact terminal includes: a spiral spring portion including a plurality of turns from a first turn which is located on the side of an inner surface of the case body to a final turn which is located on the side of the electrode of the battery; and an extension extending from the end of the final turn, wherein, as seen in a first plane orthogonal to the axis of the spiral spring portion, the extension extends through about the axis of the spiral spring portion such that the tip of the extension is located outside the final turn.