A battery includes a feedthrough pin which is electrically connected to an inner end of an electrode substrate. A mandrel on the pin can permit the pin/mandrel to be used as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin can serve as one of the battery termin...http://www.google.ca/patents/US7432012?utm_source=gb-gplus-sharePatent US7432012 - Electric storage battery construction and method of manufacture
