Excavator

An excavator comprising:

• a lower traveling body;
• an upper turning body turnably mounted to the lower traveling body;
• an actuator configured to drive a driven part including the lower traveling body and the upper turning body;
• and
• a power storage device mounted in the upper turning body and configured to serve as an energy source for driving the actuator, the power storage device including a plurality of power storage modules stacked in a vertical direction, each of the plurality of power storage modules including a power storage part and a housing that houses the power storage part,
• wherein the housing of each of the plurality of power storage modules includes
• an accommodating part that accommodates the power storage part;
• a lid that closes an opening of the accommodating part;
• and
• a plurality of first bolts that fasten the lid to the accommodating part in the vertical direction, and
• the power storage device further includes a plurality of second bolts that fasten the accommodating part of the housing of a first power storage module and the lid and the accommodating part of the housing of a second power storage module together, the first power storage module being stacked on the second power storage module in the plurality of power storage modules with the lid of the housing of the second power storage module being between the accommodating part of the housing of the first power storage module and the accommodating part of the housing of the second power storage module.