NOVELTY - The battery (100) has electrode terminals (21, 22) coupled to an electrode assembly. A case (15) accommodates the assembly. A cap plate (20) is installed at an opening of the case to seal the case, and includes terminal holes. The electrode terminals include a rivet terminal (21a) that is placed at the terminal hole of the cap plate. The rivet terminal is electrically coupled to the electrode assembly. A plate terminal (21c) is placed outside of the cap plate and electrically coupled to the rivet terminal. A lead terminal (21d) is elongated toward a lateral side of the plate terminal.    USE - Rechargeable battery for use in a portable electronic device e.g. mobile phone, notebook computer and camcorder, and hybrid vehicle. Uses include but are not limited to nickel-cadmium battery, nickel-hydrogen battery, lithium battery, lithium ion rechargeable battery, liquid electrolyte battery and polymer electrolyte battery.    ADVANTAGE - The battery allows the connecting portions of the lead terminals and bus bars to be elastically deformed in direction with respect to positions of the plate terminals such that the bus bars are not damaged at decoupling or coupling positions from the lead terminals when the battery is deformed, thus maintaining a stable coupling state. The battery improves flexibility to enhance a deformation degree of freedom even if the battery is deformed when notches are formed at the opposite edges between the electrode terminals and lead terminals of the plate terminals, thus allowing the electrode terminals and the bus bar to be stably coupled. The battery allows the electrode terminal to be movable by a fixed displacement such that no rupture occurs at the portions in-which the electrode terminals and the bus bars are coupled even if the battery is partially deformed, thus improving safety of the battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a rechargeable battery.    Case (15)    Cap plate (20)    Electrode terminals (21, 22)    Rivet terminals (21a, 22a)    Plate terminals (21c, 22c)    Lead terminals (21d, 22d)    Rechargeable battery (100)