SEALED BATTERY

The sealed battery according to the present disclosure is provided with: an electrode body including a negative electrode and a positive electrode having a positive electrode tab; a bottomed cylindrical exterior body for housing the electrode body; and a sealing body for sealing the opening portion of the exterior body via a gasket. The sealing body includes a metal valve body. The valve body has a peripheral edge portion and a reverse portion more protruding to the electrode body side than the peripheral edge portion. The positive electrode tab is led out from the electrode body, is connected to the reverse portion, and has a non-linear portion in a range surrounded by the electrode body and the reverse portion. The non-linear portion has a recess portion and a protrusion portion facing each other at both ends along the led-out direction of the positive electrode tab in a plan view.