Night Ops Battery, Lithium, 3 V, CR123, 1550mAh, 2 count. Night-Ops, A Division of Blackhawk Products Group now has available 3-volt CR123A lithium batteries for use not only in all lithium powered Night-Ops illumination tools but also in other electronic devices such as cameras, game counters, photography equipment, medical equipment, other tactical flashlights, home security systems, etc. Night-Ops CR123A lithium batteries have been manufactured by the leading battery manufacturer in the U.S. specifically for Night-Ops illumination tools. It replaces or substitutes for the following 3-volt lithium powered battery part numbers; CR123A, DL123A, CR123A, K123A, EL123AP, VL123, SF123A and CR17345. With 1550 mah (milliamp hours) of energy storage the Night-Ops CR123A 3-volt lithium battery has almost 20% more battery power storage of some of the other leading battery power suppliers. These 3-volt lithium batteries are ideal for applications that require operation in extreme hot or extreme cold environments. Additionally these batteries have an incredible 10 year shelf life with no degradation so you can feel confident in knowing that they will perform when you need them the most.