Big savings on the XL-145F 3.6V 8500mAh Lithium Battery when you buy in bulk. This case of 20 means you save money over purchasing just one battery! --- This Battery is Commonly Used in Alarm Systems, Gas Meters, Water Meters, Buoys, Emergency Location Equipment and as a Memory Back-Up. The XL-145F Can be Used Over a Wide Temperature Range and is Leak Resistant. Remember, Standard Lithium Batteries Are Non-Rechargeable. Brand: Xeno / Chemistry: Lithium Thionyl / Dimensions: 1.01 Diameter X 1.92 / Connector Type: Button Top / Description: C Cell Lithium Battery / Shelf Life: 10+ Years / Stable voltage and broad temperature range: (-55° to +85°C)