The Streamlight SL-B26 Charger Kit delivers a reliable, portable power solution for rechargeable flashlight users, pairing two high-performance 18650 USB batteries with a rugged dual-input charging cradle that accepts both 5V micro-USB and traditional AC/DC power sources for versatile charging in the field or at the workbench. Built with an impact-resistant polymer housing, the charger protects the lithium-ion cells, which feature an onboard safety control circuit and the ability to be recharged up to 500 times, ensuring long-lasting performance for popular models like the ProTac HL USB and ProTac HL 4. Individual bay LEDs provide clear charge status, and charging times are efficientabout 3.5 hours for a single battery and up to 6.5 hours for two. The compact design measures 4.5 inches and weighs a mere 2.4 ounces, making it a convenient addition to your flashlight accessories lineup for professionals and outdoor enthusiasts who demand dependable power on demanding missions. Optimized for Streamlight reliability, this kit keeps your flashlights ready with fully charged, USB-rechargeable batteries wherever your adventures take you.