The Sightmark Quick Detach Battery Pack gives you more time at the range, in the bush and less time sitting next to a wall outlet. This battery pack will fit any device with a Universal USB Type A, and is lightweight, to avoid overloading your firearm. Featuring a battery-charging indicator, and made of durable, flame-retardant ABS, this battery pack is an excellent addition to any shooting system.FeaturesBattery life indicator LEDRechargeable lithium-polymer batteryTool less quick detach mount6,000 mAh capacityPowers devices with all USB formats