U.S. Army munitions applications present a daunting combination of performance needs and environmental conditions that is extremely difficult for more energy dense batteries such as Lithium Polymer to meet. Devices must have a shelf life of 20+ years, provide peak power in a wide temperature range, endure high levels of linear acceleration and spin, and be ready for operation at a moment's notice after decades of dormancy. To address this need, Solid Power, Inc. proposes to utilize a solid-state battery design to far exceed the energy densities achieved by state-of-the-art (SOTA) reserve batteries at a much lower cost, while offering energy density, safety, and shelf life that exceeds the best available Lithium Polymer batteries.