Li Auto Power Day to Highlight In-House Battery Technology

Li Auto Schedules October 20 Technology Event

Li Auto will hold its Li Auto Power Day event on October 20 to present its latest research and development advances as the Chinese automaker expands the use of internally developed batteries across its vehicle lineup. The company announced that the event will begin at 7:30 p.m. Beijing Time on Tuesday, although it has not disclosed the specific technologies or performance metrics planned for presentation. The event will provide an opportunity for the automaker to discuss its battery development work and broader approach to developing core vehicle technologies internally while continuing to collaborate with specialist suppliers.

Founder Explains the Company's In-House Development Strategy

Li Xiang, founder, chairman, and CEO of Li Auto, said on Weibo that deeper research into core battery technologies by automakers benefits both the automotive industry and consumers. He emphasized that manufacturers can develop technologies internally without ending their relationships with suppliers. According to Li, the company decided in 2020 to pursue in-house battery development to advance technology alongside specialist partners, with decisions guided by vehicle requirements and user needs. He stressed that existing battery suppliers remain partners, framing internal development and supplier collaboration as complementary approaches rather than mutually exclusive strategies.

Explaining the company's decision-making principle, Li wrote on Weibo: "What we do ourselves and what we do with partners are choices that vary at different stages. There is only 1 criterion: which approach is better for users," he wrote on Weibo. His remarks emphasize that the choice between internal development and external partnerships depends on which arrangement best serves customers at a particular stage. He also compared the approach with the personal computer industry, where device manufacturers can integrate hardware and software while specialist suppliers continue developing chips and operating systems. In his view, both models can contribute to improvements in the overall user experience.

Battery Integration Strategy Extends Beyond Cells

Li's latest comments build on explanations he provided on September 28 about the company's internal development strategy. At that time, he said the strategy was not intended to eliminate particular suppliers and thanked CATL for supporting joint battery development for the Li One and Li Mega. He described a broader integration approach covering battery cells, packs, battery management systems (BMS), thermal management, electric drive systems, and vehicle controls. The objective is to improve safety, performance, and life cycle by coordinating these connected technologies rather than treating battery cells as an isolated component.

The integration strategy places emphasis on how different vehicle systems work together throughout a battery's service life. Battery cells and packs, electronic management, thermal controls, electric drive systems, and vehicle controls all form part of the technical scope identified by the company. Li Auto's stated approach is to coordinate these areas around vehicle requirements and user needs while maintaining cooperation with specialist suppliers. The company has not disclosed the specific technical performance figures it will present at the upcoming event, so the extent of any new advances or changes to its existing integration strategy remains unconfirmed ahead of the presentation.

Lianshan System Supports Battery Quality Monitoring

Alongside its component development work, Li Auto uses its in-house Lianshan quality monitoring system to connect data across several stages of the battery supply chain. According to Li, the system covers upstream materials, cell manufacturing, battery-pack production, and vehicle use. This connected monitoring approach enables cell traceability and supports the early detection of quality issues. Linking information from different production and usage stages gives the company a framework for monitoring battery quality across the product life cycle. The company has not disclosed additional performance metrics for the system in the announcement concerning the October technology event.

The monitoring system is part of a broader effort to coordinate battery engineering and quality oversight across the supply chain. By connecting information from materials, manufacturing, pack assembly, and vehicles in use, the company aims to trace cells and identify potential quality problems earlier. This work complements the development of cells, packs, battery management systems, and thermal management technology. Although the company has described the system's intended functions, the available announcement does not quantify its detection accuracy, operating scale, or measurable effect on battery reliability. Further details about these capabilities would need to come from the company.

In-House Batteries Already Used in Multiple Models

On September 7, Li Auto said its internally developed batteries were already being used in the Li L8, Li L6, and Li i8, with plans to extend their use gradually across its entire vehicle lineup. The company's battery development work began in 2020 and covers 5C battery cells, battery packs, and battery management systems. These technologies represent multiple layers of the battery system, from the cells themselves to the hardware and controls that manage their operation. The announced expansion indicates that internal battery development is moving beyond research into application across several models, although the company has not provided a complete rollout schedule for every vehicle.

The batteries are manufactured by a joint venture established in 2025 with Sunwoda, with each company holding a 50% stake. This arrangement illustrates how Li Auto's internal technology strategy can coexist with a formal manufacturing partnership. The company is developing battery technology while participating equally in the venture responsible for production. The announcement does not provide the joint venture's production capacity, investment amount, or output targets, so those figures cannot be established from the available information. The partnership is nevertheless a key part of the manufacturing structure supporting the automaker's battery program.

October Technology Event Precedes the Li i6 Launch

The October 20 technology event is scheduled eight days before the launch of the 2026 Li i6. According to a schedule announced on October 9, the five-seat battery-electric SUV will launch on October 28, with deliveries in China expected to begin in early November. The updated model is set to feature an internally developed 5C battery and a Mach assisted-driving chip, extending the company's use of internally developed core components in a key vehicle. The event therefore takes place shortly before another planned product introduction, although Li Auto has not confirmed which specific developments will be discussed at the technology presentation.

The updated SUV's planned equipment connects the company's battery work with its development of assisted-driving hardware. Its in-house 5C battery represents the battery technology effort, while the Mach assisted-driving chip adds another internally developed component to the vehicle's technology package. The company has not disclosed the chip's detailed specifications or provided new battery performance figures in the event announcement. The planned launch date, Chinese delivery schedule, and stated equipment establish the current timeline, but actual delivery progress and any additional technical details would require subsequent confirmation from the automaker.

Supplier Cooperation Remains Part of China's Battery Debate

Li Auto's expanding internal battery program comes amid discussion across China's automotive industry about how responsibilities should be divided between vehicle manufacturers and battery suppliers. The debate also concerns how supply-chain diversification affects competition. A September 22 commentary by CNII, a media outlet affiliated with China's Ministry of Industry and Information Technology, said adding suppliers and developing technologies internally are normal market activities. The commentary argued that these practices should not be presented as a confrontation between automakers and battery manufacturers. That position aligns with Li's explanation that internal development and supplier partnerships can operate together when each approach serves user needs.

The discussion reflects a distinction between developing greater control over core vehicle technologies and abandoning outside suppliers. Li Auto's statements describe a model in which the automaker develops selected technologies internally while continuing to work with specialist companies. Its battery collaboration with CATL and its equal-share manufacturing joint venture with Sunwoda illustrate those different forms of cooperation. The available information does not establish that the company's strategy will replace supplier relationships or that other automakers will adopt the same approach. The industry debate instead centers on how manufacturers can balance internal engineering capabilities, external expertise, quality management, and supply-chain choices.

Vehicle Deliveries Provide Business Context

Li Auto delivered 31,817 vehicles in September, representing a 6.29% decline year over year. Deliveries for the first nine months of the year totaled 293,436 vehicles, down 1.25% from the corresponding period a year earlier. These figures provide business context for the company's continued development of core technologies and its plans to expand internally developed components across its lineup. They do not, by themselves, establish a connection between delivery performance and the battery strategy. The company has not disclosed whether the upcoming technology event is intended to address delivery trends, profitability, or any other financial or commercial targets.

The upcoming presentation will take place as the company continues to develop its battery systems and prepares for the scheduled Li i6 launch. However, the announcement does not provide a revised delivery outlook, financial forecast, or quantified estimate of how internally developed components might affect costs or demand. September's delivery figures and the year-to-date total should therefore be treated as reported business results rather than evidence of a specific cause or expected outcome. Any assessment of the commercial effects of the technology program will depend on further disclosed information about product deployment, technical performance, production, and subsequent vehicle deliveries.

Industry Impact & Outlook

Li Auto's strategy highlights how automakers can seek greater control over battery technology while retaining specialist suppliers and shared manufacturing arrangements. For the automotive industry, the approach makes integration across cells, packs, management systems, thermal controls, and vehicle electronics an important area to watch, particularly as manufacturers balance product requirements with supply-chain flexibility. The use of in-house batteries in several models and the planned Li i6 launch provide concrete examples of deployment beyond development work. The October 20 presentation may clarify the company's next technical priorities, but its competitive significance will depend on disclosed specifications, quality outcomes, manufacturing execution, and the pace at which internally developed components reach additional vehicles.

Frequently Asked Questions

What is Li Auto announcing at its October 20 technology event?
Li Auto plans to present its latest research and development advances at an event focused on electric-vehicle technology and its expanding in-house battery program. The company announced that the presentation will begin at 7:30 p.m. Beijing Time on October 20. It has not disclosed the specific technologies or performance metrics that will be presented. The event comes as the automaker increases the use of internally developed batteries across its lineup, so additional information may clarify its development priorities and technology plans.

When did Li Auto begin developing its own batteries?
Li Auto said it decided in 2020 to develop batteries internally, with the goal of advancing technology alongside specialist partners and meeting vehicle requirements and user needs. Its development work covers 5C battery cells, battery packs, and battery management systems. The company has emphasized that its strategy does not require ending relationships with suppliers. Instead, it evaluates internal development and external cooperation according to which approach better serves users at different stages. The company has not provided a complete schedule for extending the technology to every vehicle.

Which Li Auto models already use in-house batteries?
Li Auto said on September 7 that its internally developed batteries were already used in the Li L8, Li L6, and Li i8. The company also stated that it plans to extend their use gradually across its entire vehicle lineup. The announcement does not provide a model-by-model schedule for that expansion. The updated Li i6 is also planned to feature an in-house 5C battery when it launches on October 28, 2026. Deliveries in China are scheduled to begin in early November, according to the previously announced timeline.

How does Li Auto work with battery suppliers?
Li Auto says internal battery development and supplier partnerships can coexist, with decisions guided by vehicle requirements and user needs. Li Xiang specifically thanked CATL for supporting joint battery development for the Li One and Li Mega. The company also established a battery manufacturing joint venture with Sunwoda in 2025, with each partner holding a 50% stake. These arrangements show that the automaker's strategy includes both internal technology development and cooperation with other companies. The available announcement does not indicate that Li Auto intends to end its existing supplier relationships.

What is the Lianshan quality monitoring system?
Lianshan is Li Auto's in-house quality monitoring system, which the company says connects data across upstream materials, cell manufacturing, battery-pack production, and vehicle use. Its stated functions include enabling cell traceability and supporting the early detection of quality issues. The system complements the company's wider battery development work, which includes cells, packs, battery management systems, and thermal management. Li Auto has not disclosed quantitative measures of the system's performance in the supplied announcement. Its detection accuracy, operating scale, and measurable effect on battery reliability therefore remain unspecified.

What were Li Auto's vehicle delivery results in September?
Li Auto delivered 31,817 vehicles in September, a decrease of 6.29% compared with the same month a year earlier. Its total deliveries for the first nine months of the year reached 293,436 vehicles, down 1.25% year over year. These figures provide context for the company's ongoing technology development and upcoming vehicle launches, but they do not establish that the battery strategy caused the reported changes. The company has not provided a quantified estimate linking in-house battery development to delivery performance, costs, or demand in the supplied announcement.