NOVELTY - A cylindrical projection is covered with a current collecting plate (5) made of metal comprising a top plate in contact with end face of cylindrical projection and a skirt portion in contact with a portion of outer peripheral surface of the cylindrical projection. The current collecting plate is connected to one electrode terminal (91) by a lead (55).    USE - For e.g. portable electronic device, electric motor vehicle.    ADVANTAGE - Current collector edge is held in satisfactory contact with current collecting plate to ensure high current collecting performance even when current collectors forming electrode unit are very thin. Attains excellent productivity, and exhibits excellent power characteristics. Can be fabricated by simple process since current collecting plate can be welded to the end of rolled-up electrode unit without causing damage to electrode or separator.    DETAILED DESCRIPTION - A positive electrode and a negative electrode comprise strip-like current collectors and active substances coating the current collectors. Each electrode has a portion coated with active substance and extending longitudinally of the current collector, and an uncoated portion not coated with active substance and formed along the edge (48) of the current collector. The uncoated portions of the electrodes project from the opposite ends of a rolled-up electrode unit (4) to provide the cylindrical projection. The positive and negative electrodes are provided in the form of strips and rolled up in spiral form with a separator interposed between the electrodes and impregnated with nonaqueous electrolyte to obtain the rolled-up electrode unit accommodated in a cylindrical cell can (1). Electric power generated by the rolled-up electrode unit is delivered to the outside via the two electrode terminals.    DESCRIPTION OF DRAWING(S) - The figure is the partially notched front view of the cylindrical lithium secondary cell.    Cylindrical cell can (1)    Rolled-up electrode unit (4)    Current collecting plate (5)    Edge of current collector (48)    Lead (55)    Electrode terminal (91)