Shares of China's BYD rallied on Tuesday after the company announced a new technology that it claims can charge electric vehicles almost as quickly as it takes to fill a gasoline car. BYD on Monday unveiled a new "Super e-Platform" technology,

One of the biggest hurdles to mass EV adoption globally has been charging speeds. Long charging times have deterred potential buyers who are accustomed to the convenience of refueling gasoline-powered cars in a few minutes.

BYD on Monday unveiled a new platform for electric vehicles (EVs) that it said could charge EVs as quickly as it takes to pump gas and announced for the first time that it would build a charging network across China.