This is an individually packaged photo battery (size CR123A) which is Interstate Batteries brand. This size of battery might also be called 123A CR123 EL123A DL2/3A etc. These varied names all reflect that the battery appears to be 2/3rds the height of an A-size battery. Lithium batteries are premium compared to regular alkaline batteries and provide superior performance for high-drain uses such as digital cameras. Not recommended for use in flashlights.