SECONDARY BATTERY AND BATTERY PACK INCLUDING THE SAME

A secondary battery and a battery pack are disclosed. A secondary battery includes a case having an opening, an electrode assembly accommodated in the case, an electrode tab electrically connected to the electrode assembly, a cap plate to close the opening, a terminal including a terminal body passing through the cap plate, and a plate coupling portion located inside the case and connected to the terminal body, and a connection plate including an electrode tab coupling portion welded to the electrode tab, and a terminal coupling portion welded to the plate coupling portion.