This secondary cell device is provided with: a plurality of secondary cells (14); and a resin case (12) for housing the plurality of secondary cells, having a plurality of wall portions that define a plurality of housing portions (20) for respectively housing the secondary cells. At least one of the wall portions defining each of the housing portions has a plurality of pressure springs (40a) formed from resin in an integrated fashion with the wall portion, for pressing and positioning the secondary cell housed within the housing portion.
