SureFire SF6BC 123A Batteries Red/Black 3.0 Volts 1,500 mAh (6) Single Pack Clamshell

SureFire lithium batteries pack a lot of power into a small package, and they are optimized for use in SureFire flashlights. These 123A 3V high-performance lithium batteries boast a 10-year shelf life, so they'll be ready when you need them, every time.