Includes 8x Sure Fire CR123A Batteries and 2 LightJunction Battery Cases Sure Fire CR123A: Optimized for use in Sure Fire flashlights, Sure Fire lithium batteries pack a lot of power into a small package. And unlike alkaline batteries Sure Fire high-performance lithium batteries boast a ten-year shelf life, which means they will be ready when you need them, every time. For all Sure Fire Lithium battery powered lights Features: High-performance batteries, optimized for high-drain use in flashlights 10-year shelf life Wide temperature tolerance Built-in heat and fault (short-circuit) protection Made in the USA to SureFire specifications Replaces: DL123A, CR123A, EL123AP