Our lithium cells feature the highest energy density in the industry – up to 915-watt hours per liter, or nearly three times the energy density of alkaline cells–as well as exceptional operating temperature ranges. Likewise, our protective circuitry, glass-to-metal hermetic seals, fuses and diodes are capable of withstanding high and low temperatures, sterilization, and vibration to ensure safe, strong, and reliable power even when subjected to harsh environmental conditions.