BATTERY AND METHOD FOR MANUFACTURING SAME

A battery includes a case including a bottom portion, a sidewall portion connected to the bottom portion, and an upper opening opposite to the bottom portion, an electrode assembly accommodated in the case and including a first electrode tab and a second electrode tab, and a cap assembly configured to seal the upper opening of the case, wherein the bottom portion includes a first region to which the first electrode tab is connected and a second region formed to surround the first region, and wherein an inner surface of the second region includes a recessed portion configured to accommodate an electrolyte.