By Danny Lee | Bloomberg BYD Co. unveiled a new system for electric cars that the Chinese automaker says will allow them to charge almost as fast as it takes a regular car to refuel. BYD’s new battery and charging system was capable of providing 470 kilometers (292 miles) of range in 5 minutes in tests on its new Han L sedan, Chairman and founder Wang Chuanfu said Monday. The manufacturer will start selling vehicles with the new technology next month. Being able to charge a car in the time it takes a combustion engine vehicle to pull in and...