A secondary battery including an electrode assembly; a terminal electrically connected to the electrode assembly; and a case accommodating the electrode assembly and the terminal, wherein the terminal includes a collecting plate connected to the electrode assembly; a collecting terminal connected to the collecting plate and protruding out of the case; a terminal plate outside of the case, the terminal plate including a terminal through hole at one side thereof and a reinforcement member recess at another side thereof, the collecting terminal passing through the terminal through hole, and a female screw thread being provided to the reinforcement member recess; and a reinforcement member in the reinforcement member recess.