China's BYD has unveiled a megawatt charging system that it says can charge an EV as quickly as filling up a fuel tank, and said it will build a network across China, igniting a new super charging race.

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,

The Chinese firm is now staking claim to a system it says will make it as quick to charge an electric vehicle as to refuel a gasoline car.