POWER STORAGE DEVICE AND METHOD FOR FABRICATING POWER STORAGE DEVICE

An aspect of a fabrication method disclosed here includes a preparation step S1 of preparing a battery assembly (2) and an injection step S2 of injecting an electrolyte (E) into the battery assembly (2). In the injection step S2, the electrolyte (E) is injected from a liquid inlet (120A) inserted into an injection hole (22) in a state where the battery assembly (2) is placed with a sealing plate (20A) having the injection hole (22) facing upward.