Method of manufacturing power storage device

A power storage device comprising:

• a plurality of electrode elements each having a rotationally symmetric outer shape when viewed from a stacking direction and including a terminal portion protruding in an outward direction of the power storage device in an area of the outer shape;
• and
• an electrolyte layer placed between the plurality of electrode elements,
• wherein the plurality of electrode elements are stacked at varying rotational angles in a stacking plane such that the terminal portions of the electrode elements do not overlap one another when viewed from the stacking direction.

A power storage device comprising:

• a plurality of electrode elements, each electrode element including a terminal portion protruding in an axial direction, wherein all of the electrode elements have the same shape;
• wherein the plurality of electrode elements are stacked vertically,
• wherein the terminal portions of the electrode elements are rotated about the vertical axis with respect to each other;
• and
• an electrolyte layer placed between each of the plurality of electrode elements.