Abstract: A solid electrolyte primary cell comprising a lithium anode, a chlorine cathode and a lithium chloride electrolyte. A solid lithium element operatively contacts the cathode material, and one form of cathode material in a charge transfer complex of an organic donor component material and chlorine. The organic donor component material can be poly-2 vinyl pyridine. Another cathode material can be formed from liquid chlorine. The surface of the lithium anode element which operatively contacts the cathode material can be provided with a coating of an organic electron donor component material. When the lithium anode operatively contacts the chlorine cathode, a solid lithium chloride electrolyte begins to form at the interface and an electrical potential difference exists between conductors operatively connected to the anode and cathode.