Abstract: Apparatus for the fabrication of rechargeable battery cores formed of component layers of electrically conductive layers and inter-leafed electrically insulating layers in a coil-like manner comprising an arbor rotatable about its axis for the receipt and support of the core component layers and for winding such core component layers thereon; associated support roller means located adjacent to the arbor for forming a nip and for feeding the component layers to and around the arbor; tray means positioned adjacent to the arbor and support roller means to feed the component layers to the nip and around the arbor; and a tucker bar operatively associated with the arbor and support roller means adapted to move the leading edge of the insulating component layers for being rotated around the arbor prior to the feeding of the conductive component layers. Also disclosed is the method of fabricating rechargeable battery cores.