The Surefire Rechargeable Battery CR123A 3.2 Volt Lithium Pack of 2 with Charging Kit is the perfect solution for customers who prefer to use rechargeable 123A cells when powering SureFire illumination tools, including weapon lights and hands-free lights. These batteries are safe to use, cost-effective, and they retain approximately 80% of their original capacity even after hundreds of charging cycles. The included smart charger can fully charge two batteries in three hours, in the convenience of your home, office or vehicle. Features The batteries are rechargeable and reusable, saving you hundreds over 123A lithium primary batteries The batteries are better for the environment because they contain no hazardous heavy metals Includes two-bay charger for easy, convenient recharging at home or on the go