METHOD OF MANUFACTURING POWER STORAGE DEVICE

A method of manufacturing a power storage device includes: after producing an electrode assembly (200), joining a first electrode tab group (250, 280) to a first conductive member (420), and attaching an insulating member (460) to the first conductive member (420); after attaching the insulating member (460) to the first conductive member (420), inserting the electrode assembly (200) into a case main body (110) from a first end portion side of the electrode assembly (200) through a second opening (113); after inserting the electrode assembly (200) into the case main body (110), electrically connecting a first electrode terminal (302) provided on a first sealing plate (130), and the first conductive member (420); and after electrically connecting the first electrode terminal (302) and the first conductive member (420), sealing a first opening (114) by the first sealing plate (130).