manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly the pin additionally extends from the battery case and in the final product constitutes one of the battery terminals with the battery case comprising the other terminal active material is removed from both sides of the outer end of the negative electrode in the jellyroll to allow room for adhesive tape to secure the jellyroll the electrolyte is injected through the open end of the case after the endcap is welded to the negative electrode but before sealing the endcap to the case the electrolyte is preferably injected through the c shaped mandrel to facilitate and speed filling application_number US 16768802 A description attention is initially directed to fig1 and 2 which illustrate a preferred feedthrough pin subassembly 10 utilized in accordance with the present invention the subassembly 10 is comprised of an elongate pin 12 preferably formed of a solid electrically conductive material having low electrical resistance and high corrosion resistance such as platinum iridium preferably 90pt 10lr the pin 12 extends through and is hermetically sealed to a header 14 the header 14 is comprised of dielectric disks e g ceramic 16 and 18 which sandwich a glass hollow cylinder 20 therebetween the glass hollow cylinder is hermetically sealed to the pin 12 the outer surface of the glass hollow cylinder 20 is sealed to the inner surface of an electrically conductive hollow.