The proposed Li sulfur battery systems will enable power and energy storage for future science and exploration missions such as: missions using electric propulsion, robotic missions, lunar exploration missions to NEO and MARS, crewed habitats, astronaut equipment, robotic surface missions to Venus and Europa, polar Mars missions and Moon missions, and distributed constellations of micro-spacecraft. The Li sulfur battery system also offers benefits to other national needs. This includes national defense systems such as unmanned aerial vehicles, unmanned underwater vehicles (AUV's), and soldier portable power systems. Benefits to the terrestrial energy sector include: all-electric and hybrid cars, grid-scale energy storage systems, smart grid, and remote, off-grid power systems (crewed vehicles and habitats). Lithium sulfur battery has created an interest among industry participants for automotive applications because of its inherent features. A lithium sulfur battery is likely to provide the right solution for the issues that are challenging the demand for lithium-ion batteries in HEVs and EVs.