Rechargeable battery with improved durability against external shock and vibration

A battery pack includes a plurality of secondary batteries, each of the secondary batteries including: an electrode assembly; a case accommodating the electrode assembly; and a collecting terminal electrically connected to the electrode assembly and protruding from the case; a first cover member on a first surface of each of the secondary batteries; and a first elastic member located between the first cover member and the first surface of each of the secondary batteries.