BATTERY AND MANUFACTURE THEREOF

PROBLEM TO BE SOLVED: To provide a battery capable of holding its performance by preventing the outer air from entering and to provide a method for manufacturing thereof. SOLUTION: In this method for manufacturing a battery, a laminated electrode body is sealed inside a laminated container 30, and the laminated electrode is formed by laminating positive and negative electrodes through an electrolyte layer. The laminated container 30 is sealed by sealed parts 31, 32 and 33. A positive electrode lead wire 21 and a negative electrode lead wire 22 mounted on the laminated electrode are led out from the inside of the laminated container 30 through the sealed part 31. The internal pressure of the laminated container 30 is the same as the external pressure or higher and can prevent the outer air from entering. This battery is manufactured by inserting the laminated electrode body into the laminated container 30 being opened its one side and by sealing the opened side in the atmospheric pressure atmosphere or pressurized atmosphere after the inside is thinned by allowing the interior to be temporarily in the depressurized atmosphere.