Next-generation Chinese electric-vehicle (EV) batteries that charge in minutes are expected to add fuel to global sales of the country’s carmakers. An EV battery that goes from a 10 per cent to a 98 per cent charge in under six-and-a-half minutes was the star of the Super Technology Day event staged in Beijing in April by the world’s biggest producer of batteries for EVs, Contemporary Amperex Technology Ltd (CATL). Earlier, the world’s leading EV maker, Shenzhen-based BYD, unveiled a battery...