Power Slate is a mobile backup battery in letter paper size. At a height of only 5.2 mm, it is even thinner than standard USB connections. With ring binder holes on the side, the unit is convenient to store and carry in folders. Moreover, with a capacity of 13,500 mAh / 50 Wh, it guarantees extended battery operation for laptops, tablets, smartphones and MP3 players. A multitude of connectors and cord accessories ensure compatibility with any mobile device.