Rechargeable battery

A rechargeable battery includes an electrode assembly (10); a case (40) housing the electrode assembly (10); a cap assembly (50) comprising a cap plate (51) that seals the case (40) and has an opening (51 c); and a short circuit member including a first short circuit plate (61) extending across the opening (51c), a second short circuit plate (62) spaced from the cap plate (51) and covering the opening (51c), and a third short circuit plate (63) between the first and second short circuit plates (61, 62).