Always Be Prepared. Optimized for use in SureFire flashlights SureFire 123A high-performance lithium batteries pack a lot of power into a very small package. And unlike alkaline batteries SureFire batteries have a 10-year shelf life which means they will be ready when you need them every time. Trust in the power and durability of SureFire batteries. 65 Batteries 2 unit packs in plastic fishbowl. 130 Batteries total.