NOVELTY - An electrochemical storage cell comprises a cathode sheet (110) comprising active materials formed on a substrate and a metal foil current collector extending from a longitudinal edge of the cathode sheet; an anode sheet (105) comprising active materials formed on a substrate and a metal foil current collector extending from a longitudinal edge of the anode sheet; a separator sheet (115) between the cathode sheet and the anode sheet; a positive terminal; and a negative terminal.    USE - Electrochemical storage cell for use in battery system useful in electric powered vehicle to store and provide electric power to drive electric motor that moves electric powered vehicle (claimed). Uses include but are not limited to industrial equipment, high power communications facilities, hybrid vehicle propulsion, and personal electronic devices.    ADVANTAGE - The electrochemical storage cell is reliable, safe, long life, and provides enhanced electrical properties, i.e. electrical conductance, capacitance and recyclability.    DETAILED DESCRIPTION - An electrochemical storage cell comprises a cathode sheet (110) comprising active materials formed on a substrate and a metal foil current collector extending from a longitudinal edge of the cathode sheet; an anode sheet (105) comprising active materials formed on a substrate and a metal foil current collector extending from a longitudinal edge of the anode sheet; a separator sheet (115) between the cathode sheet and the anode sheet; a positive terminal; and a negative terminal. The cathode, separator, and anode sheets are wound in a flattened coil shape to produce a core (200), with the metal foil current collector of the cathode sheet extending beyond the separator sheet at one end of the core and with the metal foil current collector of the anode sheet extending beyond the separator sheet at an opposite end of the core. Overlying layers of the metal foil current collector of the cathode sheet are compressed together and electrically connected to the positive terminal. Overlying layers of the metal foil current collector of the anode sheet are compressed together and electrically connected to the negative terminal. The metal foil current collectors of the cathode and anode sheets are welded together at the connection point with the positive and negative terminal, respectively. The compressed overlying layers of metal foil current collectors are electrically connected to the respective terminal through a resilient strip of conductive material, with one end connected to the compressed overlying layers of metal foil and the other end in electrical communication with the respective terminal. The current collectors for the cathode and cathode sheets comprise sheet of metal foil that act as substrate for the cathode active materials, and ribbon of metal foil attached to the sheet(s) of metal foil. The anode and cathode sheets have different lengths. An INDEPENDENT CLAIM is included for a battery system for an electric powered vehicle comprising battery packs, with each battery pack comprising battery cells connected electrically in series and where each battery cell comprises a core.    DESCRIPTION OF DRAWING(S) - The drawing is a cross sectional view of a coiled core.    Anode sheet (105)    Cathode sheet (110)    Separator sheet (115)    Core (200)    Termination points (705, 710)