A battery module includes a plurality of battery cells arranged in a first direction, a first end plate adjacent a first outermost battery cell of the plurality of battery cells, a second end plate adjacent a second outermost battery cell of the plurality of battery cells, the second end plate being spaced apart from the first end plate along the first direction, a connecting member extending along the plurality of battery cells in the first direction, the connecting member having a first end connected to the first end plate and a second end connected to the second end plate, a first securing portion securing the first end of the connecting member to the first end plate, and a second securing portion securing the second end to the second end plate, the second securing portion having a different configuration from the first securing portion.