Li Auto Accelerates In-House Battery Push with $370M Sunwoda Investment
TREE NEWS reports: Chinese electric vehicle maker Li Auto is accelerating its strategy to bring battery cell technology in-house, announcing a 2.65 billion yuan (~$370 million) investment in Sunwoda Power, a subsidiary of battery manufacturer Sunwoda. The move, disclosed on September 4, will give Li Auto an 11.17% indirect stake in Sunwoda Power, deepening an existing partnership that includes a joint venture for producing Li Auto’s self-developed batteries.
The investment coincides with a broader rollout of Li Auto’s proprietary battery cells across its vehicle lineup. The new-generation Li MEGA will switch from CATL-supplied 5C ternary lithium batteries to Li Auto’s own 5C cells for orders locked from 3:00 PM that day, with deliveries beginning in November. The upcoming Li i9 will initially use CATL batteries but transition fully to in-house cells once production capacity ramps. Li Auto’s self-developed batteries are already installed in the L8, L6, and i8 models, with plans to expand across the entire lineup.
Strategic Shift from R&D to Mass Production
This marks a critical transition for Li Auto, which has been developing battery cells since 2020 as part of a broader strategy to master core technologies, including chips. The company’s founder and CEO, Li Xiang, emphasized during an August earnings call that self-development encompasses the complete battery system—cells, pack, battery management system (BMS), and thermal management—integrated with the vehicle platform.
Under this model, Li Auto defines the technical specifications and system architecture, while Sunwoda handles manufacturing. This approach allows Li Auto to leverage Sunwoda’s existing production facilities and expertise without building its own gigafactories, while gaining greater control over technology iteration and supply chain security.
Market Context: Automakers vs. Battery Giants
The move comes amid intensifying cost pressures in China’s auto industry. National Bureau of Statistics data shows auto manufacturing profits fell 20.4% year-on-year in the first seven months of 2026, while CATL, the dominant battery supplier, reported a 42% surge in net profit to 43.28 billion yuan in H1 2026. CATL and BYD together control over 60% of China’s power battery market, giving them significant pricing power.
Li Auto’s strategy reflects a broader industry trend of automakers seeking to rebalance power in the supply chain. By developing in-house batteries and investing in alternative suppliers like Sunwoda, Li Auto aims to reduce dependency on CATL, secure production capacity, and gain more influence over technology definition—from charging performance to battery lifecycle management.
Quality and Responsibility Challenges
However, bringing battery development in-house also shifts quality responsibility onto the automaker. The industry has seen disputes over battery defects, such as the 2025 lawsuit between Geely’s Viridi and Sunwoda over faulty cells, which was settled for 608 million yuan. Regulatory scrutiny is increasing, with new safety standards (GB 38031-2025) effective July 2026 and government mandates for automakers to manage after-sales support for vehicles with discontinued battery suppliers.
For Li Auto, the challenge is to ensure that self-developed batteries match the quality and reliability of established suppliers like CATL, while scaling production without delays. The company’s 26.5 billion yuan investment and deepening partnership with Sunwoda are designed to mitigate these risks, but the real test will come as new models hit the market.
Key Takeaways for Investors
- Supply Chain Shift: Li Auto’s move may signal a broader trend of automakers reducing reliance on dominant battery makers, potentially pressuring CATL’s market share over the long term.
- Margin Impact: In-house battery development could lower costs and improve vehicle margins if executed well, but upfront R&D and production ramp-up risks remain.
- Execution Risk: Investors should watch for production delays or quality issues as Li Auto transitions to self-developed cells across its lineup.
- Partnership Value: Sunwoda stands to benefit from increased orders and capital, but also bears responsibility for manufacturing quality.
