The new system could provide another boost for BYD, which has come from behind to rival US manufacturer Tesla as the world’s top EV seller. PHOTO: REUTERS SHENZHEN – BYD has unveiled a new system for electric cars that the Chinese carmaker says will allow them to be charged almost as fast as it takes a regular car to refuel. BYD’s new battery and charging system was capable of providing 470km of range in five minutes in tests on its new Han L sedan, chairman and founder Wang Chuanfu said on March 17. Being able to charge a car in…