LS26500CNR 3.6V Lithium Thionyl Chloride C Battery With Tags Terminal. A 3.6V Primary Lithium Thionyl Chloride (Li-SOCl₂) from Saft. This battery is a non-standard sizes battery designed for reliability in specialist applications such as measuring devices, alarms and safety equipment, emergency transmitters, backup systems or real-time clocks. With an operating range from -60°C to 85°, C and resistance to wet environments are suitable to be used indoor and outdoor. They provide the high-performance and longer lasting life.