SureFire SF2CB 123A Batteries Red/Black 3.0 Volts 1,500 mAh (2) Single Pack

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.