A busbar module and a battery pack include busbars each having connection portions protruding toward electrode terminals relative to a base portion located between the connection portions. In the busbar module, for example, the connection portions each share a boundary with the base portion. The boundary extends in a direction orthogonal to a direction in which the busbars are aligned. The connection portions have a shape in which both edges of the busbars in the alignment direction of the busbars are bent toward the electrode terminals with the boundary is used as a bending origin.