Can CATL maintain EV battery lead amid carmaker diversification?

CATL Faces Market Share Concerns

Contemporary Amperex Technology Limited (CATL), a dominant player in China's electric vehicle (EV) battery sector, recorded over 41% of the domestic market share in August 2026. Despite this lead, the company's Shenzhen-listed shares have experienced a significant decline, falling by 25.7% since mid-August 2026.

This downward trend continued on Monday, 20 September 2026, with shares dropping an additional 1.6% in Shenzhen and 0.59% in Hong Kong. The share price movement reflects investor concerns regarding CATL's potential loss of market share as Chinese EV manufacturers pursue strategies to diversify their battery supply chains.

Carmakers Pursue Supply Chain Diversification

Several prominent Chinese EV makers are actively reducing their reliance on CATL. In September 2026, Xiaomi and Li Auto announced partnerships with second-tier battery manufacturers, including CALB Group, to broaden their supplier base. Concurrently, Xpeng revealed plans to develop in-house battery packs during 2026.

These initiatives stem from a broader industry trend where EV manufacturers, engaged in a domestic price war since 2025, are seeking to control costs and secure supply. CATL's net profit performance has notably exceeded that of many mainland carmakers, adding to the impetus for diversification among its customers.

Analysts Foresee Enduring CATL Dominance

Despite the share price pressure and customer diversification efforts, analysts suggest that CATL's leading position in the Chinese EV battery market is unlikely to diminish significantly over the coming year. Their assessment points to CATL's established brand recognition and its technological advantages as key factors safeguarding its market leadership.

These attributes are seen as strong barriers against rapid erosion of its dominance, even as carmakers explore alternative suppliers. The company's established infrastructure and research capabilities continue to give it an edge in a competitive and evolving industry.

Implications for China’s EV Battery Sector

The diversification trend among Chinese EV manufacturers could intensify competition within the battery supply chain, potentially affecting profit margins for all suppliers.

While CATL's technological edge and brand strength are expected to help it retain its lead through 2027, the increased engagement with tier-two manufacturers and in-house production initiatives by carmakers like Xpeng indicate a shift towards a more distributed supply landscape.

Decision-makers in the EV and battery industries should monitor the market share figures for major battery suppliers, particularly the August 2027 prints, to gauge the pace and scale of this diversification and its impact on pricing dynamics.