China’s electric vehicle (EV) king BYD expects stronger sales next year at home and globally after boosting production of its latest fast-charging batteries, which may help it regain market dominance.At the company’s annual general meeting in Shenzhen on Tuesday, chairman and president Wang Chuanfu told shareholders that its Blade Battery 2.0 and Flash Charging technology had received a warm response in domestic and overseas markets, but that battery cell production remained insufficient to meet demand.BYD was increasing its battery production capacity by 20,000 units to 30,000 units per month, Wang said. He added that this year’s car sales volume would be subject to the supply of its latest batteries.“Once our [battery] production catches up next year, we are confident that both domestic and international markets will see strong growth,” said the boss of the world’s largest EV producer on Monday.The Shenzhen-based EV giant launched and started mass production of its second-generation Blade Battery in early March, which it said was able to charge from 10 per cent to 97 per cent in nine minutes, initiating a charging speed war among domestic battery makers including Contemporary Amperex Technology Ltd (CATL) and CALB Group at the Beijing Auto Show in April.BYD also extended the application of the new battery and charging technology by at least 12 of its models, which helped fuel a shortage of battery cells, Deutsche Bank said in a note on Tuesday.This led to waiting times of four to five weeks for the company’s Denza Z9 GT sedans, the first model to include the new technology, the bank added.