The EPU-5200 provides instant power for everyone on-the-go. It is perfect for extended operations/scene management, traveling, or whenever you need to charge your Streamlight USB rechargeable flashlights or mobile devices. It is also a flashlight to light your way. The 5,200 mAh of power provides the capacity to recharge a multitude of devices with micro-USB input. It is built for professional use with high-impact, super-tough, nylon polymer construction. Sealed cover provides waterproof protection when in place (IPX7 waterproof to 1 meter for 30 minutes); tethered cover prevents loss; cover snaps in place to protect USB connector; power button is protected from inadvertent actuation. The durable lithium ion battery is rechargeable up to 500 times, fully recharges in 8 hours, and is very efficient with low self-discharge (LSD) - holds charge up to 3 months. A white 5mm LED is for use as a backup flashlight. The EPU-5200 includes removable a pocket clip, and 5" 2.0 USB to micro-USB cord. On a full charge this device provides: 4 full charges for Streamlight Stylus Pro USB, Clipmate USB an Double Clutch USB, 2 full charges for Streamlight ProTac HL USB, 1 full charge for most tablets, 3 full charges for iPhones, 2 full charges for Samsung Galaxy Smartphones or most other smartphones. Never be left without Power.