NOVELTY - The apparatus (10) has an electrode group (11) that is provided with electrode structures (31,41) accommodated in a case (20) with electrolyte (W1,W2). The electrode structures (31,41) respectively comprise positive electrode having positive electrode current collection portion (32c,42c), and negative electrode having negative electrode current collection portion (33c,43c). The negative electrode current collection portion (33c) and positive electrode current collection portion (42c) are electrically connected within the case.    USE - Electrical storage apparatus e.g. secondary battery (claimed) mounted in vehicle such as commercial vehicle and riding vehicle. Can also be used in electric double layer capacitor.    ADVANTAGE - Since the negative electrode current collection portion of preset electrode structure is electrically connected with positive electrode current collection portion of specific electrode structure within case, the output voltage of each electrical storage apparatus can be raised. Since the preset and specific electrode structures and reacting electrolyte solution can be divided by section wall, the electrolyzing of electrolyte solution is prevented. Since the positive electrode current collection portion of preset electrode structure and negative electrode current collection portion of specific electrode structure protrude in the side at which electrode group is differed, the placement space of positive electrode current collection portion of preset electrode structure and negative electrode current collection portion of specific electrode structure in case can be reduced.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the secondary battery. (Drawing includes non-English language text)    Secondary battery (10)    Electrode group (11)    Case (20)    Electrode structures (31,41)    Positive electrode current collection portions (32C,42C)    Negative electrode current collection portions (33c,43c)    Electrolyte (W1,W2)