A rechargeable battery including: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case accommodating the electrode assembly; a cap plate sealing an opening of the case; a first sub-terminal including a first portion and a second portion integrally formed with the first portion, the first portion being arranged at one end of the cap plate and the second portion being arranged at an outer surface of the case; and a second sub-terminal including a third portion and a fourth portion integrally formed with the third portion, the third portion being arranged at another end of the cap plate and the fourth portion being arranged at another outer surface of the case.