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 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. Note: Do not use rechargeable LFP 123A batteries with incandescent illumination tools. See Restrictions in Features. FEATURES: Every SFLFP123-KIT includes two Lithium Iron Phosphate (LiFePO4) 450mAh 3.2V rechargeable cells, a two-bay battery charger, and a MICRO-USB to USB-A cable Every SFLFP123 battery set includes two Lithium Iron Phosphate rechargeable cells only (charger is not included) Smart, internal circuitry automatically terminates charge cycle when cells are at full capacity Safety design features provide protection from overcharge, short-circuit, and reverse polarity Charge one or two SFLFP123 from 1.5 hours to 3 hours. Charge termination occurs at 3.65V typical Restrictions: Rechargeable SFLFP123 batteries are only to be used to power LED illumination products and NOT those featuring incandescent lamps SPECIFICATIONS: Key attributes Battery type: LFP123A Voltage: 3.2 volts Capacity: 450 mAh Energy: 1.44 Wh Weight: 17 grams Lithium content: 0.135 grams