SECONDARY BATTERY

A secondary battery includes an electrode assembly including a first electrode having a first electrode tab coupled to an insulating tape, a separator, and a second electrode, a case accommodating the electrode assembly on one open side, the case being electrically connected to the second electrode, a cap assembly sealing the one open side of the case, the cap assembly being electrically connected to the first electrode tab, an insulating sheet between the cap assembly and the electrode assembly; and a sealing tape surrounding the electrode assembly and the insulating tape.