Gasgoo Munich-— Greater Bay Technology has commissioned the industry's first gigawatt-hour-scale solid-state battery line. At an Oct. 13 ceremony at its Nansha headquarters, the company marked the completion of capacity upgrades for mass production. The line was retrofitted from existing capacity to produce cells classified under the national solid-state battery standard GB/T 48093.1-2026.
This marks the world's first solid-state battery to roll off a mass-production line with certification from an authoritative third-party lab, according to Dong Yang, chairman of the China Automotive Power Battery Industry Innovation Alliance. Third-party tests showed the cells lost less than 0.5% of their mass after being punctured and continuously baked for six hours in a 120°C vacuum — meeting the national standard GB/T 48093.1-2026 issued in late August. That makes Greater Bay Technology the first company to clear testing under the new benchmark.
The first solid-state cells roll off the line. (Image credit: Greater Bay Technology)
The cells also passed every safety test under the upcoming GB 38031-2025 standard, which takes effect July 1, 2026. In a nail-penetration test, a steel needle pierced the fully charged cell without triggering a fire or explosion, and the structure remained intact. On the performance front, the batteries use a deep-eutectic-based composite solid electrolyte. Specific energy ranges from 260 to 480 Wh/kg, while cycle life matches conventional cells and supports stable fast charging.
Drawing on state-backed R&D, Greater Bay Technology retrofitted and optimized portions of an existing 4 GWh liquid lithium battery line. By upgrading rather than building a heavy-asset plant from scratch, the company bridged the manufacturing gap from liquid to all-solid-state — while retaining the ability to flexibly switch between the two formats. After A-sample cells rolled off the line in April, the gigawatt-hour-scale line was upgraded and commissioned just six months later.
At the ceremony, Greater Bay Technology also signed strategic pacts with the Shenzhen Vertical Take-Off and Landing Aircraft Innovation Center and Hubei Liming Lithium Industry. The deals aim to speed up the deployment of solid-state batteries across multiple applications — from electric vehicles and the low-altitude economy to embodied robots and premium energy storage.
