An essential feature of a laptop is how long its battery lasts. Although many laptops are never more than a few feet from an outlet, the appeal of a self-charging device is clear. It's like an ...

The laptop itself is a decent piece of kit too: Engadget noted that the concept on the show floor packed an OLED display and a mid-range 50.2-Wh battery, while coming in at just 15 mm thick (or about ...