The Streamlight SL-B26 Protected Li-ion USB Battery Pack is the ultimate solution for transforming your high-performance multi-fuel lighting tools into efficient rechargeable systems. Designed specifically for compatibility with a range of Streamlight products, including the PolyTac X USB, ProTac series, and Siege X USB, this rechargeable battery pack features a built-in micro-USB charge port that allows for convenient charging in just five hours. Weighing only 1.7 ounces and measuring 2.75 inches, the SL-B26 is compact and lightweight, making it an ideal choice for both everyday carry and emergency preparedness. The integrated safety circuit ensures that the battery pack is protected from overcharging and over-discharging, providing peace of mind during use. With its advanced Li-ion technology, the Streamlight SL-B26 USB battery delivers reliable power to your favorite Streamlight flashlights, ensuring you have the illumination you need when it matters most. Whether you are a professional in need of dependable lighting solutions or an outdoor enthusiast looking for a reliable rechargeable flashlight battery, the Streamlight SL-B26 is engineered to meet your demands. Upgrade your lighting tools with this innovative rechargeable battery pack and experience the convenience of multi-fuel lighting systems that are always ready for action. Embrace the power of Streamlight rechargeable battery technology and ensure your devices are equipped with the best in rechargeable flashlight batteries.