ASP Lithium Batteries Bulk PakCR123A (50 Batteries) Max Performance Primary Cells 10 Year Shelf Life PTC Safety Circuit Lithium primary cells are the international standard for powering tactical lighting products. An extremely dense energy source, Lithium batteries have a ten year shelf life. They function in a wide range of temperatures and environments. Lithium power cells are leakproof and vibration resistant. They provide the most dependable source of power currently available