SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME

A secondary battery includes an electrode assembly including a first electrode and a second electrode, a case including a first side that is open, the case accommodating the electrode assembly and being electrically connected to the second electrode, a cap assembly coupled to the first side of the case, the cap assembly being electrically connected to the first electrode, and a spacer coupled to an outer portion of the case and contacting the cap assembly, the spacer including a first protrusion and a second protrusion opposite the first protrusion, the first protrusion and the second protrusion contacting the case.