A secondary battery includes an electrode assembly including a first electrode having a first electrode tab coupled to an insulating tape, a separator, and a second electrode, a case accommodating the electrode assembly on one open side, the case being electrically connected to the second…

Provided is a technique capable of suppressing movement of an electrode body inside an exterior body. According to the technique disclosed herein, a sealed battery is provided, which includes an electrode body having a wide face having a rectangular shape, an exterior body made of a laminated film…

A battery cell having an electrode main body, in which a positive electrode and a negative electrode, each having an electrode mixture is coated on at least one surface of a metallic current collector, and a separation film interposed between the positive electrode and the negative electrode are…