Tablets, printers, and portable power supplies are also heavily discounted ahead of the school year. I’m already seeing deals of up to 90 percent off on laptops, tablets, portable power supplies, and more. But some legitimately great deals have come across my desk. For those looking to amplify their WiFi coverage through a mesh WiFi system, there are also a couple of great deals from TP-Link, including this for outdoors. Back-to-School Portable Power DealsOn-the-go power can be a godsend when you have a paper due the next morning.