A rechargeable battery comprising: a case; an electrode assembly accommodated in the case; a cap plate sealing an opening of the case; terminals (31, 41, 231) electrically coupled to the electrode assembly and penetrating the cap plate; terminal plates (32, 42) on the cap plate, wherein each of the terminal plates (32, 42) is coupled to a respective one of the terminals (31, 41, 231); and a connecting member (33, 130, 230) including a sinuous body (33a, 130a, 230a) located between the cap plate and the terminal plate (32, 42) to electrically couple the cap plate and the terminal plate (32, 42) wherein the sinuous body (33a, 130a, 230a) includes a first connector (33a1, 131, 231) that faces the terminal plate (32, 42) and is electrically coupled to the terminal plate (32, 42), a second connector (33a2, 132, 232) that faces the cap plate and is electrically coupled to the cap plate, and a bent portion (33a3, 133, 233) that connects the first connector (33a1, 131, 231) and the second connector (33a2, 132, 232); and characterised in that the first connector includes a first protrusion (131 a) that protrudes from a first side of the sinuous body (33a, 130a, 230a), the first side facing the terminal plate (32, 42), and the second connector includes a second protrusion that is located opposite to the first side to protrude from a second side of the sinuous body (33a, 130a, 230a), the second side facing the cap plate wherein the first side has a first insulating coating layer that is thinner than the first protrusion (131 a), and the second side is covered with a second insulating coating layer that is thinner than the second protrusion and wherein the battery further comprises a current collecting member electrically coupling the terminal (31, 41, 231) and the electrode assembly and including a fuse portion (51 a). a case; an electrode assembly accommodated in the case; a cap plate sealing an opening of the case; terminals (31, 41, 231) electrically coupled to the electrode assembly and penetrating the cap plate; terminal plates (32, 42) on the cap plate, wherein each of the terminal plates (32, 42) is coupled to a respective one of the terminals (31, 41, 231); and a connecting member (33, 130, 230) including a sinuous body (33a, 130a, 230a) located between the cap plate and the terminal plate (32, 42) to electrically couple the cap plate and the terminal plate (32, 42) wherein the sinuous body (33a, 130a, 230a) includes a first connector (33a1, 131, 231) that faces the terminal plate (32, 42) and is electrically coupled to the terminal plate (32, 42), a second connector (33a2, 132, 232) that faces the cap plate and is electrically coupled to the cap plate, and a bent portion (33a3, 133, 233) that connects the first connector (33a1, 131, 231) and the second connector (33a2, 132, 232); and characterised in that the first connector includes a first protrusion (131 a) that protrudes from a first side of the sinuous body (33a, 130a, 230a), the first side facing the terminal plate (32, 42), and the second connector includes a second protrusion that is located opposite to the first side to protrude from a second side of the sinuous body (33a, 130a, 230a), the second side facing the cap plate wherein the first side has a first insulating coating layer that is thinner than the first protrusion (131 a), and the second side is covered with a second insulating coating layer that is thinner than the second protrusion and wherein the battery further comprises a current collecting member electrically coupling the terminal (31, 41, 231) and the electrode assembly and including a fuse portion (51 a).