China's BYD plans to end production of the pouch-type batteries used in its best-selling hybrids as the automaker seeks to address durability concerns and the risk that they could leak, said three people familiar with the matter. The world's top seller of battery-powered cars last month began converting production lines for pouch-type cells in two of its factories situated in Shaanxi and Zhejiang provinces to produce prismatic batteries instead, said one of the people, who had direct knowledge of the matter. It is still making pouch-type cells at a third factory in Qinghai province to minimise disrupting production of its hybrid vehicles, which accounted for almost half of its global sales last year, but plans to switch that too and completely stop using pouch cells by early 2025, the person said.