Optimized for use in Surefire flashlights, Surefire Lithium batteries pack a lot of power into a small package. And unlike alkaline batteries Surefire High-Performance Lithium Batteries boast a ten-year shelf life, which means they will be ready when you need them, every time. 10-Year Shelf Life (we receive them weekly). For all Surefire Lithium battery powered lights.
