A rechargeable battery, comprising: an electrode assembly that is chargeable and dischargeable; electrode terminals (21, 22) electrically connected to the electrode assembly; a case accommodating the electrode assembly therein; and a current collecting part electrically connecting between the electrode assembly and the electrode terminals (21, 22), wherein: the current collecting part includes: a current collecting plate electrically connected to the electrode assembly, and a lead member connecting the electrode terminals (21, 22) and the current collecting plate, the current collecting plate includes: a first current collecting member connected to the lead member, and a second current collecting member welded to the first current collecting member such that welding protuberances are provided on a region where the first current collecting member and the second current collecting member are welded, characterized in that the welding protuberances are formed by laser welding in a state in which filler is positioned at a space between the first current collecting member and the second current collecting member. an electrode assembly that is chargeable and dischargeable; electrode terminals (21, 22) electrically connected to the electrode assembly; a case accommodating the electrode assembly therein; and a current collecting part electrically connecting between the electrode assembly and the electrode terminals (21, 22), wherein: the current collecting part includes: a current collecting plate electrically connected to the electrode assembly, and a lead member connecting the electrode terminals (21, 22) and the current collecting plate, the current collecting plate includes: a first current collecting member connected to the lead member, and a second current collecting member welded to the first current collecting member such that welding protuberances are provided on a region where the first current collecting member and the second current collecting member are welded, characterized in that the welding protuberances are formed by laser welding in a state in which filler is positioned at a space between the first current collecting member and the second current collecting member. the current collecting part includes: a current collecting plate electrically connected to the electrode assembly, and a lead member connecting the electrode terminals (21, 22) and the current collecting plate, a current collecting plate electrically connected to the electrode assembly, and a lead member connecting the electrode terminals (21, 22) and the current collecting plate, the current collecting plate includes: a first current collecting member connected to the lead member, and a second current collecting member welded to the first current collecting member such that welding protuberances are provided on a region where the first current collecting member and the second current collecting member are welded, characterized in that the welding protuberances are formed by laser welding in a state in which filler is positioned at a space between the first current collecting member and the second current collecting member. a first current collecting member connected to the lead member, and a second current collecting member welded to the first current collecting member such that welding protuberances are provided on a region where the first current collecting member and the second current collecting member are welded, characterized in that the welding protuberances are formed by laser welding in a state in which filler is positioned at a space between the first current collecting member and the second current collecting member.