Big power for 3 devices. Designed and tested to charge most non USB-C HP 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</br> High-capacity 22400 mAh battery: Provides a full charge to most HP laptops, charges a tablet up to three times, and a smartphone up to 10 times. Must use current HP laptop charger to charge portable battery, or purchase a separate HP laptop power adapter. Power adapter not included with purchase.</br>A built-in heat sensor monitors backpack temperature and adjusts accordingly. Meets security requirements for in-flight carry-ons</br>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.</br>Laptop and USB micro cables included: Two USB micro cables for Android® devices and one laptop cable included. Easily recharge your backpack with a side-pocket plug-in.</br></br>Product Description</br></br>Get past your fear of a low battery with this revolutionary backpack. A built-in battery gives you the remarkable ability to charge your laptop, tablet, and smartphone wherever you are. Beautifully functional and exceptionally efficient, it’s got the power to take you further.</br><br/>http://www.amazon.com/gp/product/B01J9QK410