BATTERY AND CURRENT COLLECTOR APPLIED THERETO, AND BATTERY PACK AND VEHICLE INCLUDING THE BATTERY

A battery having an electrode assembly including a first electrode, a second electrode, and a separator between the first and the second electrode, the first electrode having a first portion including an active material extending between a pair of first sides, and a second portion extending between the pair of first sides and exposed beyond the separator, and at least part of the second portion includes an electrode tab; a battery housing having a first opening at a first end and a second end opposite the first end, the battery housing accommodating the electrode assembly; and a first current collector including a support portion on the electrode assembly, a first tab coupling portion extending from the support portion and coupled with the second portion of the first electrode and a first housing coupling portion extending from the support portion and electrically coupled onto an inner surface of the battery housing.