Contemporary Amperex Technology, the world's largest battery maker, reported sharply higher profit in the first half as booming demand for energy-storage systems and resilient electric-vehicle battery sales offset weakening appetite for EVs in China.

Net profit surged 42% from a year earlier to 43.28 billion yuan, equivalent to $6.39 billion, the company said Friday. Revenue increased 55% to 276.92 billion yuan.

The strong earnings underscore the Chinese battery maker's ability to outgrow the broader EV market, which is experiencing slowing demand, especially in China. CATL has benefited from strong market share, with new-energy vehicles—a term encompassing EVs and plug-in hybrids—continuing to outsell traditional gasoline-powered cars in China.

Demand is also surging for energy-storage systems in data centers amid the AI infrastructure buildout.