All-solid-state batteries are hailed as the "ultimate form" of power batteries, and their mass production timeline has become a focal point of the global new energy vehicle industry. Dongfeng Group announced it will initiate all-solid-state battery mass production in the second half of 2026, powering vehicles with 1,000km+ range. BYD revealed its all-solid-state batteries have entered vehicle testing, with small-batch installation planned for 2027. Toyota is targeting 2027-2028 for sulfide all-solid-state battery mass production. Meanwhile, many "solid-state batteries" launched by Chinese companies are actually semi-solid or quasi-solid-state. True all-solid-state battery mass production still needs to overcome three major technical hurdles: electrolyte-electrode interface, large-scale manufacturing processes, and cost control. This article reviews the mass production timelines of major global automakers and battery companies, analyzing who is likely to achieve commercial breakthrough first.
Mass Production Timeline: The Global Player Landscape
In 2026, all-solid-state batteries are reaching a critical transition from "proof of concept" to "mass production race." Major global automakers and battery companies have announced their production timelines:
| Company | Technology Route | Production Timeline | Target Application | Latest Progress |
|---|---|---|---|---|
| Dongfeng Group | Oxide/Sulfide | H2 2026 | 1,000km+ range vehicles | Officially announced H2 mass production |
| BYD | Sulfide | 2027 | Premium vehicle small batches | Vehicle testing phase |
| Toyota | Sulfide | 2027-2028 | Lexus / EVs | Partnership with Idemitsu Kosan |
| CATL | Condensed matter / Sulfide | 2027 | Premium passenger vehicles | Condensed matter batteries already in production |
| Samsung SDI | Sulfide | 2027 | Premium EVs | Pilot line under construction |
| WeLion | Semi-solid-state | Already in production | NIO ET7 etc. | 360Wh/kg in production |
| QingTao Energy | Semi-solid-state | Already in production | SAIC IM etc. | Joint venture with SAIC |
From the table, Dongfeng Group is the only company claiming 2026 all-solid-state battery mass production. Most other companies target 2027-2028. Notably, currently marketed "solid-state batteries" (such as WeLion and QingTao) are mostly semi-solid or quasi-solid-state batteries, still containing small amounts of liquid electrolyte — fundamentally different from true all-solid-state batteries with zero liquid electrolyte.
Dongfeng Leads: First to Mass Produce in H2 2026
Dongfeng Group is currently the only automaker globally with a clear 2026 all-solid-state battery mass production timeline. According to its announced plan:
- Second Half of 2026: Official all-solid-state battery mass production
- Energy Density: Target exceeding 400Wh/kg (current mainstream ternary lithium batteries are approximately 250-300Wh/kg)
- Range: Vehicles equipped with the battery will achieve over 1,000 km range
- Fast Charging: Support 10-minute fast charging to 80% capacity
- Safety Features: Eliminate thermal runaway risks, passing extreme safety tests including nail penetration and crushing
Dongfeng's confidence comes from its all-solid-state battery pilot line launched in 2025. Located in Xiangyang, Hubei, the line has a planned annual capacity of 1GWh, primarily targeting the premium passenger vehicle market. Dongfeng Group Vice President You Zheng stated that all-solid-state battery mass production is the core technological pillar of Dongfeng's "Transformation and Upgrade Three-Year Action."
However, the industry holds cautious attitudes toward Dongfeng's ability to deliver on schedule. Large-scale manufacturing processes for all-solid-state batteries — particularly uniform solid electrolyte film formation and cell densification molding — still face engineering challenges.
BYD and Toyota: The Critical 2027-2028 Window
BYD's all-solid-state battery R&D is led by its subsidiary FinDreams Battery. In June 2026, BYD Chairman Wang Chuanfu revealed that the company's all-solid-state batteries have entered vehicle testing, with plans for small-batch vehicle installation in 2027, first applied to premium brands (such as the Yangwang series).
BYD has chosen the sulfide solid electrolyte route. Its advantage is ionic conductivity approaching liquid electrolyte levels, but its disadvantage is extreme sensitivity to moisture, requiring production in anhydrous and oxygen-free environments — posing extremely high demands on manufacturing processes. According to industry analysis, BYD's all-solid-state battery energy density target is above 500Wh/kg, meaning range could improve by over 60% compared to existing batteries at the same weight.
Toyota is the automaker with the earliest investment and deepest patent accumulation in the all-solid-state battery field. The sulfide all-solid-state battery developed by Toyota in partnership with Idemitsu Kosan is planned for mass production in 2027-2028, first equipped on Lexus brand electric vehicles.
Toyota's technology route features:
- High Energy Density: Target exceeding 450Wh/kg
- Fast Charging Performance: 10-minute charging to 80%
- Temperature Tolerance: Operating temperature range of -40°C to 100°C
- Patent Barriers: Holding over 1,000 patents related to all-solid-state batteries
Toyota's mass production plans have been delayed multiple times (initial target was the early 2020s), reflecting the difficulty of transitioning all-solid-state batteries from laboratory to factory. In 2026, Toyota announced it would build a dedicated all-solid-state battery factory in Shizuoka Prefecture, Japan, with an annual capacity planned at the several GWh level.
Technical Hurdles: Three Major Barriers on the Road to Mass Production
Despite ambitious timelines announced by multiple companies, true large-scale mass production of all-solid-state batteries still needs to overcome three major technical hurdles:
Hurdle 1: Electrolyte-Electrode Interface Impedance
Contact between solid electrolyte and electrode materials is less complete than with liquid electrolyte, leading to increased ion transport resistance. This directly affects battery charge/discharge efficiency and cycle life. Current mainstream solutions include in-situ solidification, interface modification layers, and composite electrolytes, but none have completely solved this problem.
Hurdle 2: Large-Scale Manufacturing Processes
The production environment for all-solid-state batteries differs significantly from existing lithium battery production lines. Sulfide electrolytes are sensitive to moisture (ppm level), while oxide electrolytes require high-temperature sintering (above 1,000°C) — all posing new requirements for production equipment precision, environmental control, and energy consumption. The investment cost to build an all-solid-state battery production line is estimated to be 2-3 times that of an equivalent-capacity lithium battery line.
Hurdle 3: Cost Control
Current all-solid-state battery manufacturing costs are approximately 5-10 times that of equivalent-capacity lithium batteries. Raw materials such as germanium and lithium in sulfide electrolytes are expensive, and oxide electrolyte sintering processes are energy-intensive. The industry generally believes that achieving cost parity with liquid lithium batteries will require at least until around 2030.
Market Impact: Practical Significance for Consumers
For the global automotive market, especially consumers and dealers in emerging markets such as Central Asia and Russia, the all-solid-state battery mass production timeline directly affects purchase decisions:
- 2026-2027: The first all-solid-state battery vehicles will be launched in small batches in China and Japan, expected to be priced in the above 400,000 yuan premium market
- 2028-2030: As production ramps up and costs decline, all-solid-state batteries are expected to reach the 250,000-350,000 yuan price band
- Post-2030: If costs reach parity, all-solid-state batteries may become mainstream in the mid-range market, making 1,000km+ EV range the norm
Before then, semi-solid-state batteries (energy density 350-400Wh/kg) will serve as a transitional solution, being installed at scale between 2026-2028, providing consumers with safer and higher-range options compared to existing lithium batteries.
Outlook: Who Will Break Through First
Comprehensively analyzed, Dongfeng Group is most likely to be the first to achieve limited mass production of all-solid-state batteries in the second half of 2026, but its production scale and cost control remain unknown. Toyota, with its deep technical accumulation and dedicated factory construction, is expected to achieve relatively stable mass production in 2027-2028. BYD, leveraging vertical integration advantages and a vast EV market, may achieve rapid volume growth after 2028.
The true "all-solid-state battery era" may not arrive in the short term, but 2026-2028 will be the critical window determining the future landscape. For observers of the global automotive industry, the trajectory of this technology race is worth continuous attention. For more in-depth analysis, follow EX1000.COM.
