POWER STORAGE DEVICE

A power storage device includes: a plurality of power storage cells; and a first heat exchanger and a second heat exchanger that cool the plurality of power storage cells and extend in an extension direction. The first heat exchanger includes: a first heat medium path that extends in the extension direction and allows a heat medium to flow in the first heat exchanger; and a first recess formed to decrease a flow path area of the first heat medium path. The second heat exchanger includes: a second heat medium path that extends in the extension direction and allows the heat medium to flow in the second heat exchanger; and a second recess formed to decrease a flow path area of the second heat medium path. A depth of the first recess is different from a depth of the second recess.