Provided are a laminated battery capable of suppressing a level drop of an electrolyte caused by expansion of a negative electrode active material during discharge, and a manufacturing method for the laminated battery.
An enclosure member of the laminated battery is constituted by affixing a first resin film and a second resin film to each other, and a separator is arranged inside the enclosure member between a positive electrode (for example, a first electrode) and a negative electrode (for example, a second electrode). A peripheral edge portion of the separator is fixed to a peripheral edge portion of the enclosure member (the first resin film or the second resin film).