Dart, a tiny laptop charger, will even juice-up your phone at the same time

New Delhi: Laptops keep getting smaller and lighter; however, their charging device still remain bulky and heavy. The situation will soon change as a California-based company founded by a group of MIT graduate students has invented what it calls the world's smallest laptop-charger.Measuring 2.5 cubic inches and weighing just over 56.6 gram, FINsix's Dart is almost of the same size as a lipstick case — making it four times smaller and six times lighter than the average laptop adapter.Dart is a compact charger that will power a 65 watt laptop and even has a USB port to charge a mobile at the same time. The Dart was built using a patented MIT technology known as very high frequency (VHF) conversion that moves power from wall sockets to devices at a much higher frequency and more efficiently than standard chargers. That tough achievement - bring 1000 times faster at switching than conventional laptop charger - means it can both be smaller and remain efficient at charging. The charger also sports a USB port for good measure, which you can use to charge your phone or other small devices.The award-winning Dart debuted at this year's Consumer Electronics Show. The device showed off a 90V-265V, 50/60Hz AC input—stuffed into the 2.5-cubic-inch rectangular container, with an attached six feet of cable.“Switching isn't a perfect process and during every cycle some energy is wasted in the form of heat. At Finsix, our technology allows us to waste far less energy with each cycle. Thus, we can cycle up to 1000x faster without wasting any more energy than a conventional power converter. Cycling faster means we can transfer a smaller packet of energy to each cycle – and make the power converter a lot smaller,” the company explains. The group used a Kickstarter campaign to raise $200,000 for production of the charger. That goal was met within 24 hours, with 1,000 early backers getting in at $79. The Dart will eventually go on sale for a retail price of $120. Act fast, though, and you can pick one up in blue, magenta, silver, black, or orange for $79 or $89. U.S. shipping is expected to begin later this year.While the Dart will work with most laptops there are some larger units that are beyond it. Apple's MacBook Pro 15-inch, 17-inch and 15-inch retina models aren't compatible.