It's not uncommon for our batteries to need the occasional boost while we're running around a trade show, but spending more than a couple minutes tethered to a power outlet can be seriously detrimental to our productivity. And we're definitely not alone. NTT Docomo, one of Japan's largest carriers, has developed a prototype battery that's capable of achieving a complete charge in just ten minutes. NTT reps weren't willing to get into much detail about the new technology, which currently employs an external lithium-ion battery sleeve and is only designed to support NEC's sup