Compatibility and Purpose: Fits all Streamlight flashlights that support the SL-B26 battery packs; verify compatibility before purchase; the SL-B26 rechargeable lithium-ion battery pack delivers consistent power output and dependable performance for duty-grade illumination tools High Capacity Power for Extended Runtime: High-capacity lithium-ion design supports long runtimes and sustained lumen output ensuring dependable illumination during work shifts, field operations, emergencies, or outdoor use USB-C Rechargeable Convenience: Skip disposable batteries and reduce downtime, the SL-B26 battery pack recharges with 6 hours using USB-C (charger sold separately), built-in charge indicator that displays red when charging and green when charged What’s Included from Streamlight: Includes eight (8) Streamlight SL-B26 rechargeable lithium-ion batteries Built Streamlight Tough: Built to Streamlight’s proven professional-grade standards for durability, reliability, and field performance trusted worldwide by first responders, tactical professionals, and demanding users