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Global EV battery market share in January-September 2026: CATL 39.1%, BYD 15.2%

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Global EV battery market share in January-September 2026: CATL 39.1%, BYD 15.2%

CATL (HKEX: 3750) and BYD (HKEX: 1211) continued to dominate the global electric vehicle (EV) battery market in the first 9 months of 2026, together accounting for more than half of the market.

Global EV battery usage totaled 994.5 GWh in January-September, up 19.7% year-on-year, according to data released on Monday by South Korean market research firm SNE Research.

Battery installations reached a monthly record of 145.1 GWh in September, though year-on-year growth slowed to 15.8%, below the cumulative growth rate. The figures cover battery electric vehicles, plug-in hybrids and conventional hybrids.

CATL retained the top spot with 389.2 GWh of battery installations, up 24.9% year-on-year, outpacing the overall market. Its global share rose to 39.1% from 37.5% a year earlier, but slipped 0.3 percentage points from 39.4% in January-August.

Second-ranked BYD recorded battery installations of 150.9 GWh, up 7.4% year-on-year. Its share fell to 15.2% from 16.9% a year earlier, though it edged up from 15.1% in January-August.

The 2 companies held a combined share of 54.3%, little changed from 54.4% a year earlier but down from 54.6% in January-August.

CATL continued to expand its overseas automaker customer base, while BYD's battery supply remained largely tied to its own vehicle sales, widening the gap between their growth rates to 17.5 percentage points, SNE Research said.

BYD's slowdown stemmed from the Chinese market. SNE Research said BYD's EV sales in China fell 32.9% year-on-year, while its battery installations in the country declined 7.1% to 104.9 GWh from 112.9 GWh.


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