The best 123A lithium batteries available, bar none 123As outperform alkaline batteries 10-year shelf life — they're ready when you need them 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. Features High-performance batteries, optimized for high-drain use in flashlights 10-year shelf life makes SureFire 123As an excellent option for emergency power needs Wide temperature tolerance prevents degradation when in use or when stored Available in packages of 12, 72 or 800 (bulk pack) to ensure adequate battery supply Made in the U.S.A. of U.S. and imported parts Key Attributes BATTERY TYPE 123A VOLTAGE 3 volts CAPACITY 1,550 mAh ENERGY 4.65 Wh WEIGHT 17 grams LITHIUM CONTENT 0.6 grams