SECONDARY BATTERY, BATTERY PACK INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME

A secondary battery, a battery pack including the same, and a method of manufacturing the same are disclosed. A secondary battery includes a case, an electrode assembly in the case and including a first electrode and a second electrode, a first tab member connected to the first electrode and extending in a first direction from the electrode assembly, a cap assembly facing the electrode assembly and including a first terminal and a second terminal, and a first connection member between the electrode assembly and the cap assembly and connected to the first terminal and the first tab member, and the first terminal includes a first vision hole to allow a marking point of the first connection member to be generated and identified.