SureFire Lithium 23A Flashlight Batteries CR123A

Surefire pioneered the use of compact, energy-dense 123 A lithium batteries because of their many advantages over alkaline, such as higher power density, superior voltage maintenance, lower weight, wider temperature tolerance, 10-year shelf-life, and built-in heat/fault protection. Optimized for use in high performance electronics, Surefire lithium batteries pack a lot of power into a small package. Surefire batteries boast a ten-year shelf life, which means they will be ready when you need them, every time.