BATTERY AND METHOD FOR PRODUCING THEREOF

A main object of the present disclosure is to provide a battery in which wrinkles in its outer package is prevented from generating. The present disclosure achieves the object by providing a battery including: an internal element including at least a power generating element, and a laminate-type outer package in which the internal element is sealed; wherein the internal element includes a groove structure; and the battery includes a storing part where a part of the outer package is stored in the groove structure.