The Streamlight 78105 Battery Pack is a must have accessory for anyone who relies on their Streamlight flashlight or other USB devices in the field. This battery pack includes a carrier that can be easily attached to belts or MOLLE gear, making it convenient to carry and access when needed. The pack comes with two USB battery packs that can be charged simultaneously, ensuring that you always have a backup power source on hand. The battery pack is constructed with an impact resistant polymer housing, making it durable enough to withstand the rigors of daily use. It is compatible with Streamlight Stinger 2020, Stinger 2020 LED, and PolyStinger 2020 flashlights, ensuring that you can use it with your favorite Streamlight products. Whether you're a law enforcement officer, military personnel, or outdoor enthusiast, the Streamlight 78105 Battery Pack is an essential accessory that will provide you with a reliable power source for your USB devices. With its durable construction, convenient carrier, and dual USB battery packs, this battery pack is a must have for anyone who needs to stay connected and powered up in the field.