The JLab VOLT 5000mAh Portable Power Pack fully charges your mobile devices up to three times. Plus, it's universally compatible with all USB devices - iPhones, tablets, portable speakers and the like. It's ready for pretty much anything except your pop's retro-cool vinyl turntable. The Volt's compact design makes it easy to travel to the far corners of the earth - or maybe just out of town for the weekend - without ever losing power. The Volt's sturdy aluminum finish and built-in overcharge protection ensure a safe and durable charging experience. Even better, the Volt's LED display lets you know when your device is charged. See the light, hit the door.