Rechargeable battery pack

A rechargeable battery pack capable of enhancing workability of attaching a bare cell and a protection circuit module (PCM) and enhancing attachment performance and accuracy of pack dimensions is provided. The rechargeable battery pack includes a bare cell, a protection circuit module (PCM) electrically connected to the bare cell, and an insulating member configured to attach the PCM to the bare cell, wherein the insulating member includes a hinge portion formed thereon such that the insulating member is bent to be attached to a first surface portion and a second surface portion of an end portion of the bare cell in a corresponding manner.