That’s where the Hatsuden-Nabe comes in handy. This specially designed pot works just like a regular pot, except that it features a USB port. Any heat that is normally wasted is turned into power that can be used to charge the devices connected to it. The port can be hooked up to any gadget or device that uses a USB port to charge its batteries. TES NewEnergyCorporation, the company that created the pot, claims that it takes about 3-5 hours to completely charge an iPhone. The Hatsuden-Nabe will set you back $280 and went on sale in Japan yesterday.