Li Auto has announced plans to deploy batteries it developed in-house across its entire vehicle lineup and will launch a refreshed Li i6 electric SUV in the fourth quarter equipped with the company’s own 5C battery and Mach assisted‑driving chip, according to company communications summarised by industry outlets.
What Li Auto says it will change
Li Auto described a staged roll‑out: its internally developed battery technology—covering 5C cells, battery packs and the battery management system (BMS)—is already fitted in the Li L8, Li L6 and Li i8, and will expand to all models, the company said in recent public posts and earnings commentary reported by industry press.
The company began developing battery cells in 2020 and positions the technology as a means to control cost, quality and core capability. Li Auto also says it has been developing its ‘‘Mach’’ assisted‑driving chip since 2022 and plans continued investment in future iterations.
Confirmed model timing and specs reported
Two independent industry outlets that reported the company statements provided matching timing and product details:
- The 2026 Li i6 (a 5‑seat all‑electric SUV initially launched in September 2025) will be refreshed for 2026 and equipped with Li Auto’s in‑house 5C battery and Mach assisted‑driving chip. Pre‑orders are reported to open in late September, with deliveries starting in early November.
- The new‑generation Li Mega initially used CATL 5C ternary lithium batteries for early deliveries; Li Auto says the Mega will switch entirely to the company’s in‑house 5C ternary lithium batteries after production preparations complete. Customers who locked orders at or after 3:00 pm Beijing Time on September 7 were said to receive vehicles with Li Auto’s batteries, with deliveries expected to begin in November.
- The Li i9 flagship 6‑seat all‑electric SUV will debut in mid‑September and initially use CATL 5C ternary lithium batteries, then transition to Li Auto’s in‑house batteries as production ramps.
Why this matters
Three concrete implications stand out from the available reporting:
- Supply‑chain control and cost pressure: Li Auto’s vehicle margin fell to 9.4% in Q2, down from 19.4% a year earlier, and the company has linked increased vertical integration—batteries and chips—as a strategy to manage costs without raising prices, according to its August 26 earnings commentary cited in reporting.
- Faster charging positioning: Li Auto emphasises its experience in 5C ultra‑fast charging and says integrated battery/vehicle design supports “quality, safety and long‑life.” The company labels its cells 5C, which signals capability for higher charge/discharge rates compared with lower C‑rate cells; the reports describe the chemistry as ternary lithium for these 5C cells.
- Manufacturing scale and partnership model: Li Auto increased investment in a battery manufacturing partner, Sunwoda Electric Vehicle Battery Co Ltd (Sunwoda EVB). After the transaction, Li Auto will directly hold an 8.79% stake in Sunwoda EVB and become its second‑largest single shareholder. The automaker and Sunwoda established a 50‑50 joint venture in 2025 to manufacture Li Auto’s battery designs.
What competitors are doing (as reported)
The reporting notes that the initial battery supplier for some Li Auto models was CATL (CATL’s 5C ternary lithium cells). Li Auto’s move mirrors a broader trend among Chinese EV makers to internalise key components—batteries and chips—to protect margins and product differentiation. The reporting explicitly compares the strategy to the playbooks of Apple and Huawei, describing it as keeping “core technologies in‑house.”
Limits, open questions and where the reporting differs
- Performance and durability data: The sources report the battery type (5C ternary lithium) but do not provide independently verified metrics such as usable energy (kWh), energy density (Wh/kg), range impact, cycle life, or certified safety test results. Li Auto’s statements claim advantages in quality, safety and longevity but the reports do not include third‑party test data to confirm those claims.
- Production ramp timing: The accounts agree that some models will initially ship with CATL cells and then transition to Li Auto’s cells as production ramps, but precise volumes and the timetable for reaching full lineup coverage are not quantified in the available reporting.
- Pricing and market impact: While Li Auto reportedly paired a lower price with hardware upgrades for the new‑generation Li Mega to stimulate demand, the sources do not list the specific price points or quantify how in‑house batteries will affect vehicle ASPs (average selling prices) or total cost of ownership.
- Scope of the Mach chip: Reporting says Mach development began in 2022 and that the refreshed Li i6 will feature the Mach assisted‑driving chip. The technical capabilities, compute specs, or software stack of Mach 100 or later iterations were not disclosed in the cited reports.
Evidence comparison and practical checklist for fleet buyers and EV tech teams
Based on the reporting, here is a short checklist and questions procurement or fleet technology teams should use when assessing Li Auto vehicles to be delivered in Q4 or early 2027:
- Confirm battery origin on the VIN/contract: ask dealers or Li Auto for a written statement whether a vehicle’s battery is Li Auto’s in‑house 5C cell or CATL 5C cell, particularly for models ordered around the reported September 7 cutoff.
- Request official battery specifications: usable kWh, nominal cell voltage, chemistry designation, energy density (Wh/kg), and established cycle‑life test protocol and results.
- Ask for BMS details: thermal management approach, state‑of‑charge limits, charging power ceilings for AC and DC, and fast‑charge protocols tied to the 5C rating.
- Validate warranty terms: battery warranty length, mileage limits, degradation guarantees (if any), and transferability for resale or fleet turnover plans.
- Inquire about software and over‑the‑air updates: how the Mach chip and BMS will be updated, whether updates change battery charge envelopes, and any data‑sharing clauses required for assisted‑driving features.
- Confirm manufacturing partner roles: validate whether vehicles are built with Sunwoda EVB cells and the expected timeline for joint‑venture produced cells to enter the assembly line.
Practical implications for U.S. buyers and analysts
For buyers and analysts outside China, the items above are essential because the publicly reported claims—5C ternary lithium cells, rollout calendar, and Sunwoda JV—are precise but lack third‑party verification in the available sources. Contracts should specify the battery supplier and technical metrics, especially where fleet operations require predictable charging windows and end‑of‑life planning.
Bottom line
Li Auto has articulated a clear strategy to replace third‑party cells with its own 5C ternary lithium batteries across its portfolio and to equip the refreshed 2026 Li i6 with the in‑house cell and Mach assisted‑driving chip in Q4, with pre‑orders reported to open in late September and deliveries in early November. The move is supported by a manufacturing partnership and an equity stake in Sunwoda EVB, but several important technical and timing details remain unverified in reporting. Procurement teams should seek explicit, documentable battery specifications and supplier confirmations before assuming the vehicles they order will match the in‑house configuration.