When a German automaker signs a battery supply contract, or a South Korean electronics firm sources energy storage cells, the odds are overwhelming that the product traces back to a handful of Chinese companies. China does not merely participate in the global lithium-ion battery industry — it controls it at nearly every layer of the supply chain, from upstream mining and chemical processing to cell manufacturing and pack integration. Understanding how this happened, who the key players are, and what it means for international business is no longer optional for anyone in energy, automotive, or industrial sectors.
The Scale That Changes Everything
China accounted for approximately 76% of global lithium-ion battery cell production capacity in 2025, according to BloombergNEF. That figure alone is striking, but it understates China’s actual leverage because the country also controls upstream inputs: it processes roughly 65% of the world’s lithium, over 70% of cobalt refining capacity, and nearly all commercial graphite anode production. When Western governments and analysts talk about supply chain diversification in the battery sector, they are confronting a structure that took 15 years and tens of billions in state and private investment to build.
Three domestic companies sit at the apex of this structure: Contemporary Amperex Technology Co. Limited (CATL), BYD, and China Aviation Lithium Battery (CALB). Together, they represent a strategic concentration of manufacturing capability, intellectual property, and customer relationships that no foreign competitor has matched.
CATL: The Global Cell Manufacturing Champion
Founded in 2011 by Robin Zeng (Zeng Yuqun) in Ningde, Fujian Province, CATL reached approximately RMB 359.8 billion ($49.6 billion USD) in revenue in 2024. More telling is its global market share: CATL held 37.9% of the global EV battery market in 2025 by installation volume, according to SNE Research, ahead of BYD’s 17.1% and all other competitors combined.
CATL’s competitive advantages are systemic rather than singular. The company operates more than 13 gigafactory-class manufacturing bases globally, including facilities in Erfurt, Germany and a planned plant in Hungary, serving BMW, Mercedes-Benz, Tesla, Volkswagen, and dozens of other OEMs directly. Its cell chemistries span lithium iron phosphate (LFP), nickel manganese cobalt (NMC), and the company’s proprietary sodium-ion technology, which CATL commercialized at scale in 2023. This chemistry breadth means CATL can serve mass-market EVs with cost-optimized LFP packs while simultaneously supplying premium vehicles requiring higher energy density NMC cells.
CATL also holds one of the world’s largest battery patent portfolios, exceeding 12,000 granted patents as of early 2026 — a deliberate strategy to build IP moats that make competitor replication legally, not just technically, difficult.
BYD: Vertical Integration as Competitive Strategy
BYD’s battery story is inseparable from its automotive story. Founded in 1995 by Wang Chuanfu as a rechargeable battery manufacturer in Shenzhen, BYD transformed itself into an automaker in 2003. By 2024, BYD had become the world’s largest producer of new energy vehicles by volume, delivering over 1.76 million fully electric cars and 1.95 million plug-in hybrids globally.
What distinguishes BYD from nearly every other automaker globally is complete vertical integration. BYD manufactures its own battery cells, battery management systems, motors, electronic controls, and vehicle bodies. Its FinDreams Battery subsidiary supplies not only BYD’s own vehicles but also third-party automakers including Toyota, Stellantis, and several smaller Western brands. FinDreams had an installed capacity exceeding 130 GWh annually by end of 2024.
BYD’s Blade Battery — a variant of LFP chemistry configured in a structural cell-to-pack (CTP) format — passes the nail penetration test without fire or explosion, addressing historical safety concerns around LFP cells in high-performance applications. That safety credential has been a key selling point in markets where consumer confidence in battery technology remains a barrier to EV adoption.
CALB: The State-Backed Challenger
China Aviation Lithium Battery (CALB), listed on the Hong Kong Stock Exchange since 2022, is less well-known internationally but increasingly significant. CALB began as a research institute under the Aviation Industry Corporation of China (AVIC) before commercializing civilian battery technology. By 2024, CALB had achieved an installed base exceeding 40 GWh annually, ranking it among the global top ten battery manufacturers.
CALB’s strategic value is its combination of state backing and commercial agility. The company benefits from technology transfer pathways rooted in China’s aerospace sector — including high-reliability cell design standards and thermal management expertise — while operating as a publicly listed entity with commercial OEM customers including Li Auto, Changan Auto, and GAC Group. CALB’s positioning as a lower-profile alternative to CATL appeals to OEMs seeking supply diversification without exiting the Chinese battery ecosystem entirely.
The Supply Chain Architecture: Where the Real Power Sits
Understanding these three companies requires understanding the upstream layers they draw from. At the mining layer, China’s direct position is significant but not absolute. Australia, Chile, and Argentina hold substantial lithium reserves; the Democratic Republic of Congo dominates cobalt mining. However, China’s power operates primarily at the refining and processing layer. Ganfeng Lithium and Tianqi Lithium together process a majority of global lithium carbonate and lithium hydroxide output. CNGR Advanced Material and Huayou Cobalt control significant cobalt processing. Raw materials mined outside China frequently pass through Chinese chemical processors before reaching battery manufacturers anywhere in the world.
At the anode materials layer, BTR New Material Group and Shanghai Putailai produce the graphite and silicon anode materials that go into nearly every major battery cell globally. At the separator layer, SEMCORP (Shenzhen Senior Technology Material Co.) and Yunnan Energy New Material are among the top global producers. This depth of control across multiple upstream nodes gives Chinese battery manufacturers structural cost advantages that go far beyond factory scale or labor costs. For a broader view of how this raw material control is structured, see our analysis of China’s lithium supply chain and the global EV revolution.
What Western Automakers and Industrial Buyers Need to Know
For Western automakers, the practical reality is that CATL, BYD Battery, and CALB remain extremely difficult to avoid for any manufacturer seeking volume supply at competitive prices. Ford, GM, Volkswagen, BMW, Hyundai, and Stellantis all either source Chinese batteries directly or have entered manufacturing partnerships with Chinese cell makers. Ford’s LFP partnership with CATL for its Michigan plant — structured as a licensed technology arrangement under political pressure — illustrates how deeply embedded this dependency has become even in markets where government policy explicitly seeks to reduce it.
Industrial and commercial energy storage buyers face similar dynamics. Grid-scale storage, telecom backup, and commercial building energy management systems all draw heavily on Chinese-manufactured cells. The International Energy Agency’s 2025 Global EV Outlook noted that China-based manufacturers supplied over 80% of utility-scale battery storage deployments globally in 2024.
For companies operating in the broader Chinese EV ecosystem, battery cost leadership is central to understanding competitive dynamics. Our coverage of China’s auto export boom and the positioning of NIO, Li Auto, and XPeng against global competition provides context for how battery cost advantages translate into vehicle-level market share gains.
Geopolitical Pressures and the Diversification Timeline
The U.S. Inflation Reduction Act (IRA) of 2022 included provisions restricting tax credits for EVs containing battery components or critical minerals sourced from “foreign entities of concern,” a category that includes CATL, BYD, and their supply chains. Similar restrictions are under development in the European Union. These policies are generating investment in non-Chinese battery manufacturing in the United States, Europe, and South Korea, but analysts broadly agree that meaningful supply chain diversification away from Chinese battery technology will take a decade or more at minimum.
CATL itself has adapted strategically, licensing technology rather than owning facilities in politically sensitive jurisdictions. The critical minerals dimension also connects this story to broader supply chain vulnerabilities. As we analyzed in our coverage of China’s rare earth and critical materials dominance, upstream inputs underpinning battery chemistry are subject to export control policies that China has already exercised as a trade policy instrument.
China’s Ministry of Industry and Information Technology (MIIT) publishes annual production data, industry standards, and the New Energy Vehicle approved models list that are essential reading for any company competing or partnering in this sector. The MIIT’s New Energy Vehicle Industry Development Plan framework outlines policy direction through 2035. On the U.S. government side, the Department of Energy’s Vehicle Technologies Office maintains detailed battery supply chain assessments through its Global Battery Manufacturing data series, providing the most authoritative public-domain view of where capacity sits and where investment is flowing.
The Bilateral Opportunity
Despite the geopolitical narrative dominating Western media coverage, the commercial logic of bilateral engagement in the battery sector remains compelling. Chinese battery makers need Western customers, technology partners, and market access. Western automakers, utilities, and industrial buyers need affordable, high-quality battery supply at scale. That mutual need does not disappear because of tariff policy or political rhetoric.
CATL, BYD, and CALB are sophisticated commercial actors, not simply instruments of state policy. All three actively seek international OEM customers and have demonstrated willingness to structure supply and technology agreements that address Western partner concerns around IP protection and local content requirements. Joint ventures, licensed manufacturing, and long-term offtake agreements are all in active use.
The businesses that will navigate this landscape most effectively are those who engage on the commercial level even as governments manage the political framing. Understanding the supply chain architecture, building direct relationships with Chinese battery companies, and maintaining technical intelligence on a rapidly evolving competitive landscape are not optional activities for anyone with meaningful exposure to the global energy transition. They are core business functions.