Super Cool Invention Link Show

Just doing the standard back-from-lunch perusal of my RSS feeds, and hit upon a particularly cool Engadget one. Turns out somebody is making AA batteries that have usb connectors for recharging. The negative (flat) end is a cap that covers the plug, which is a pretty clever way of doing it. Engadget says about four hours to charge, which isn't too bad compared to a standard rechargeable AA battery. If they get any kind of decent life I would definitely consider picking up a few.