BYD to Deploy 1,000 Solid-State Battery Test Vehicles by 2027, Targets Mass Production Around 2030

September 20, 2026

CarNewsChina China

Overview

BYD plans to deploy demonstration vehicles equipped with its all-solid-state battery technology next year, as announced by Executive Vice President Stella Li. This initial technical demonstration phase will utilize 20Ah and 60Ah solid-state cell prototypes developed by FinDreams, focusing on a sulfide-based solid electrolyte route. The company aims for a small-batch test of approximately 1,000 vehicles around 2027, with large-scale commercial production targeted for around 2030.

In Depth

Key Findings

Chinese automotive giant BYD plans to introduce demonstration vehicles equipped with its all-solid-state battery technology next year (2027), as confirmed by Executive Vice President Stella Li. This initiative represents a significant milestone in the company’s solid-state battery development, forming part of a long-term roadmap that includes small-batch vehicle testing of around 1,000 units commencing in approximately 2027, with large-scale commercial production targeted for around 2030.

Technical / Clinical Details

FinDreams, BYD’s battery division, is concentrating its development efforts on all-solid-state battery technology based on sulfide-based solid electrolytes. Currently, the company is developing 20Ah and 60Ah all-solid-state cell prototypes, aiming for an energy density approaching 400 Wh/kg. Sulfide-based solid electrolytes are known for their high ionic conductivity and excellent low-temperature characteristics, offering the potential for both high power output and enhanced safety. The deployment in demonstration vehicles next year will be the first step in validating the performance and reliability of this technology in real-world automotive environments.

Background & Context

All-solid-state batteries are considered the next-generation battery technology, offering superior safety, energy density, and charging speed compared to conventional liquid-electrolyte lithium-ion batteries. The global development race for this technology is intensifying. The Chinese government has prioritized solid-state battery technology as a national strategic initiative, prompting major players like BYD to accelerate their development. As a vertically integrated company producing everything from batteries to EVs, BYD’s in-house solid-state battery development is crucial for establishing a competitive advantage in the future EV market.

Strategic Significance & Outlook

BYD’s introduction of demonstration vehicles with solid-state batteries will be closely watched as it concretely showcases the feasibility of the technology. The small-batch testing of approximately 1,000 units, scheduled for around 2027, is essential for evaluating performance and gathering durability data under real-world conditions. Successful outcomes from this phase would pave the way for full-scale commercial production around 2030. However, key challenges remain, including cost reduction for retail sales and mass production, establishing manufacturing processes, and building robust supply chains. BYD’s endeavors are expected to have a significant impact on the global EV and battery industries.

Source: https://carnewschina.com/2026/09/13/byd-to-put-solid-state-battery-technology-into-a-vehicle-next-year-executive-confirms/

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