This report covers the research, development, and management activities of the programs at Argonne National Laboratory (ANL) and at subcontractors' laboratories on high-temperature batteries during the period October 1978 - March 1979. These batteries are being developed for electric-vehicle propulsion and for stationary energy--storage applications. The present cells, which operate at 400-500 C, are of a vertically oriented, prismatic design with one or more inner positive electrodes of FeS or FeS2, facing electrodes of lithium-aluminum alloy, and molten LiCl-KC1 electrolyte.