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.Most Read from BloombergICE Eyes Massive California Tent Facility Amid Space ConstraintsHow Britain’s Most Bike-Friendly New Town Got BuiltThe Dark Prophet of Car-Clogged CitiesWashington,

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.

Shares in Chinese EV giant BYD surged to a record high Tuesday after it unveiled new battery technology it says can charge a vehicle in the same time it takes to fill up a petrol car.The company said the battery and charging system,