| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element capable of easily determining, when non-destructive inspection is performed, whether or not an object photographed inside a container of the power storage element such as a battery is a foreign material.SOLUTION: A power storage element includes an electrode body that has a positive electrode plate and a negative electrode plate, a container that accommodates the electrode body, and a reference material 127 that can be detected by non-destructive inspection. |
