Rechargeable battery pack

A rechargeable battery pack according to an exemplary embodiment of the present invention includes a plurality of unit cells (11, 12, 13, 14), connection tabs (30, 40) for electrically connecting the plurality of unit cells, connection plates (50, 70) combined with the connection tabs, and a protective circuit module (21) in which grooves (22, 23) with which the connection plates are combined are formed.