Battery

A battery comprising:

• positive and negative electrodes each provided with an active material layer and a current collecting tab that extends from an edge line of the active material layer in a direction perpendicular to the edge line;
• an electrode body constituted by repeatedly and alternately laminating the positive and negative electrodes in the direction of lamination with a separator interposed therebetween;
• tab groups obtained by overlaying, in the direction of lamination, same polarity tabs of the repeatedly laminated positive and negative electrodes;
• and
• current collector terminals connected to the tab groups, wherein
• the tab groups include, as the current collecting tabs, second tabs disposed only on one outer side of the tab groups in the direction of lamination, and first tabs disposed on a center side and another outer side of the tab groups in the direction of lamination,
• the first tabs each have an extending part which extends from the edge line of the active material layer in a direction perpendicular to the edge line, and a crossing part which extends from the extending part in a width direction parallel to the edge line of the active material layer, or in a direction intersecting with the width direction and toward the edge line of the active material layer, and wherein
• a width (Wc) of the second tabs in the width direction is greater than a width (Wb) of the crossing part of the first tabs in the width direction, and
• the second tabs and the crossing parts of the first tabs are gathered together towards the one outer side in the direction of lamination, and the current collector terminals are joined to the positions at which the tabs are gathered together.