The present invention provides a method for manufacturing a battery which includes a granulation step (Step S1) of mixing at least an active material, a binder, and a solvent to form wet granulated particles, a deposition step (Step S2) of subjecting the wet granulated particles to a forming process to form an active material layer on a current collector, a rolling step (Step S3) of placing a separator on a surface of the active material layer and rolling the separator before the wet granulated particles on the current collector are dried, to obtain a laminated body in which the current collector, the active material layer, and the separator are stacked in this order and closely attached to each other, a drying step (Step S4) of drying the laminated body to provide an integrated laminated body, and a fabrication step (Step S5) of fabricating a battery using the integrated laminated body.