The HP Powerup Backpack is a revolutionary backpack with a built-in battery that gives you the remarkable ability to charge your laptop, tablet and smartphone wherever you are. Beautifully functional and exceptionally efficient, it has the power to take you further. Designed and tested to charge most laptops up to 17.3" diagonal screen size, a tablet and a smartphone. With power priority, you control the order in which your devices charge. A heavy-duty canvas exterior with interior padding and durable straps helps provide long-lasting laptop protection. Coated to resist wet weather and comes with its own raincoat.