BATTERY MODULE

An electricity storage module includes plural electricity storage devices, a restriction member , and a spacer . The plural electricity storage devices include a pair of opposed wide width surfaces and the wide width surfaces are arranged to be opposed to each other. The restriction member is configured to restrict the plural electricity storage devices in a direction along which the wide width surfaces of plural electricity storage devices are arranged to be opposed to each other. The spacer is arranged between an electricity storage device arranged at a first end part in a direction along which the plural devices are arranged and the restriction member , and a thickness becomes smaller when a load being larger than a predetermined load is applied along the direction in which the electricity storage devices are arranged.