Voltage detection unit and power storage device

A voltage detection unit comprising:

• a voltage detection terminal that has a first location being conductively connected to a detection target;
• a board-shaped housing that has a terminal accommodating recess in which the voltage detection terminal is accommodated;
• a cover that is locked to the housing at a first temporary locking position where the first location of the voltage detection terminal accommodated in the terminal accommodating recess is not covered and a final locking position where the first location is covered;
• and
• an electric wire that is conductively connected to a second location of the voltage detection terminal and drawn out toward the outside of the housing, wherein
• the housing includes
• a guide portion that guides the cover from the outside toward the first temporary locking position, and
• a first wall that comes into contact with the cover when the cover is positioned at the first temporary locking position in a moving direction in which the cover is guided and moves toward the first temporary locking position.