A rechargeable battery comprising: an electrode assembly (10, 210) comprising a first electrode, a second electrode, and a separator between the first and second electrodes (11, 12); a case receiving the electrode assembly (10, 210); a cap plate coupled to the case; an electrode terminal (41, 42) connecting the electrode assembly (10, 210) to an outside of the cap plate; and a lead tab (51, 52, 252) electrically connecting the electrode assembly (10, 210) and the electrode terminal (41, 42), wherein the electrode assembly (10, 210) comprises: a coated region (11 a, 12a, 14a) of the first electrode; and an uncoated region (11 b, 12b, 14b) of the first electrode adjacent an end portion of the coated region (11a, 12a, 14a), wherein the uncoated region (11b, 12b, 14b) has a through hole (61, 62, 262) formed therein and connecting an inner portion of the electrode assembly (10, 210) to an outside of the electrode assembly (10, 210), characterized in that the uncoated region (11 b, 12b, 14b) comprises: a slant region (A1, A21) extending toward the end portion of the coated region (11 a, 12a, 14a); and a junction region (A2, A22) connected to the slant region (A1, A21) and coupled to the lead tab (51, 52, 252), wherein the through hole (61, 62, 262) is at least formed at the slant region (A1, A21), and wherein the electrode assembly (10,210) further comprises a first outer surface (S1, S21) and a second outer surface (S2, S22) opposite the first outer surface (S1, S21), wherein the electrode assembly (10, 210) includes a plurality of uncoated regions (11 b, 12b, 14b), and the through hole (61, 62, 262) is formed through the uncoated regions (11b, 12b, 14b) in the slant region (A1, A21), wherein the slant region (A1, A21) includes passages (P, P2) between the uncoated regions (11b, 12b, 14b), and wherein the passages (P, P2) form a largest opening area at a side proximate the second outer surface (S2, S22) and a smallest opening area at a side proximate the first outer surface (S1, S21), and are connected to the through hole (61, 62, 262). an electrode assembly (10, 210) comprising a first electrode, a second electrode, and a separator between the first and second electrodes (11, 12); a case receiving the electrode assembly (10, 210); a cap plate coupled to the case; an electrode terminal (41, 42) connecting the electrode assembly (10, 210) to an outside of the cap plate; and a lead tab (51, 52, 252) electrically connecting the electrode assembly (10, 210) and the electrode terminal (41, 42), wherein the electrode assembly (10, 210) comprises: a coated region (11 a, 12a, 14a) of the first electrode; and an uncoated region (11 b, 12b, 14b) of the first electrode adjacent an end portion of the coated region (11a, 12a, 14a), wherein the uncoated region (11b, 12b, 14b) has a through hole (61, 62, 262) formed therein and connecting an inner portion of the electrode assembly (10, 210) to an outside of the electrode assembly (10, 210), characterized in that a coated region (11 a, 12a, 14a) of the first electrode; and an uncoated region (11 b, 12b, 14b) of the first electrode adjacent an end portion of the coated region (11a, 12a, 14a), wherein the uncoated region (11b, 12b, 14b) has a through hole (61, 62, 262) formed therein and connecting an inner portion of the electrode assembly (10, 210) to an outside of the electrode assembly (10, 210), characterized in that the uncoated region (11 b, 12b, 14b) comprises: a slant region (A1, A21) extending toward the end portion of the coated region (11 a, 12a, 14a); and a junction region (A2, A22) connected to the slant region (A1, A21) and coupled to the lead tab (51, 52, 252), wherein the through hole (61, 62, 262) is at least formed at the slant region (A1, A21), and wherein the electrode assembly (10,210) further comprises a first outer surface (S1, S21) and a second outer surface (S2, S22) opposite the first outer surface (S1, S21), wherein the electrode assembly (10, 210) includes a plurality of uncoated regions (11 b, 12b, 14b), and the through hole (61, 62, 262) is formed through the uncoated regions (11b, 12b, 14b) in the slant region (A1, A21), wherein the slant region (A1, A21) includes passages (P, P2) between the uncoated regions (11b, 12b, 14b), and wherein the passages (P, P2) form a largest opening area at a side proximate the second outer surface (S2, S22) and a smallest opening area at a side proximate the first outer surface (S1, S21), and are connected to the through hole (61, 62, 262). a slant region (A1, A21) extending toward the end portion of the coated region (11 a, 12a, 14a); and a junction region (A2, A22) connected to the slant region (A1, A21) and coupled to the lead tab (51, 52, 252), wherein the through hole (61, 62, 262) is at least formed at the slant region (A1, A21), and wherein wherein the through hole (61, 62, 262) is at least formed at the slant region (A1, A21), and wherein the electrode assembly (10,210) further comprises a first outer surface (S1, S21) and a second outer surface (S2, S22) opposite the first outer surface (S1, S21), wherein the electrode assembly (10, 210) includes a plurality of uncoated regions (11 b, 12b, 14b), and the through hole (61, 62, 262) is formed through the uncoated regions (11b, 12b, 14b) in the slant region (A1, A21), wherein the slant region (A1, A21) includes passages (P, P2) between the uncoated regions (11b, 12b, 14b), and wherein the passages (P, P2) form a largest opening area at a side proximate the second outer surface (S2, S22) and a smallest opening area at a side proximate the first outer surface (S1, S21), and are connected to the through hole (61, 62, 262).