NOVELTY - The apparatus i.e. secondary battery (10), has a case (11) provided with positive and negative electrode terminals (18, 19) that are protruded from a cover (11b). A positive electrode electrically conductive unit (20) and a negative electrode electrically conductive unit (21) are provided with a positive electrode connection part (20d) and a negative electrode connection part (21d), respectively and linked to positive and negative electrode uncoated parts (15b, 16b), where the conductive units are respectively equipped with an electrode assembly (12) and an engaged engaging part (24).    USE - Electrical storage apparatus e.g. secondary battery (claimed) such as lithium ion secondary battery, for use as an assembled battery for power supply for a propulsion motor in a vehicle, and an electric equipment. Can also be used as a nickel-hydrogen secondary battery, a nickel cadmium secondary battery, an electrical double layer capacitor and a lithium ion capacitor.    ADVANTAGE - The positive and negative electrode electrically conductive units are equipped with the electrode assemblies and the engaged engaging parts, so that load added to the positive electrode uncoated part and the negative electrode uncoated part is reduced when inserting a cover-electrode assembly in the case, thus preventing damage to the uncoated parts.    DETAILED DESCRIPTION - The electrode assembly is a winding-type electrode assembly.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a secondary battery.    Secondary battery (10)    Case (11)    Cover (11b)    Electrode assembly (12)    Positive electrode uncoated part (15b)    Negative electrode uncoated part (16b)    Positive electrode terminal (18)    Negative electrode terminal (19)    Positive electrode electrically conductive unit (20)    Positive electrode connection part (20d)    Negative electrode electrically conductive unit (21)    Negative electrode connection part (21d)    Engaged engaging part (24)