SFLFP123 batteries are rechargeable and reusable, saving you hundreds over 123A lithium primary batteries SFLFP123 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 *It should be noted that these LFP rechargeable batteries have significantly less run time than their disposable counterparts Charge. Win. Repeat.The SFLFP123-KIT is the perfect solution for customers who prefer to use rechargeable 123A cells when powering SureFire illumination tools, including WeaponLights and hands-free lights. While they lack the capacity of SureFire 123A lithium primary cells, SFLFP123 cells are safe to use, cost-effective, and they retain approximately 80% of their original cap