Method for evaluating electric power storage device and method for manufacturing electric power storage device

A method for evaluating an electric power storage device, the electric power storage device including a stacked portion, and separator layers and electrode layers being alternately stacked in the stacked portion, the method comprising:

• causing a short circuit by inserting an electrically conductive probe into the stacked portion in a thickness direction of the electrode layers;
• measuring a penetration depth of the probe after the short circuit occurs;
• and
• evaluating the number of the electrode layers involved in the short circuit based on the penetration depth, wherein
• the penetration depth is identified by measuring a length of an adhesion portion in an axial direction of the probe, and
• the adhesion portion is a portion of a surface of the probe to which a constituent material of the stacked portion adheres.