Lithium thionyl chloride has a terminal voltage of 3.6 V. Lithium thionyl chloride is one of the most powerful and potent battery chemistries, based on lithium (Li), sulfur (S), oxygen (O) and chlorine (Cl). Its chemical formula is Li-SOCl2. Properties: very high energy density, low self-discharge and high chemical stability. With its very high energy density, the capacity is twice as high compared to e.g. Li-Ion. The ability to operate in a wide temperature range and to resist strong vibrations means that it is used in everything from medical technology to space stations. At -55°C, about 50% of the original capacity remains. Has a relatively high internal resistance which means that only moderate load currents are suitable. Common uses are memory backup, sensors, medical instruments, measuring instruments, security systems, etc. Shelf life: 10-20 years. Working temperature: -60 to +85 °C. Marking / designation: ER, LS, LTC. End voltage: 3.0V.