Greater Bay Technology Begins All-Solid-State Cell Production on Converted Li-Ion Line
GBT's 1 GWh line uses conventional equipment with a new electrolyte injection station to meet new China solid-state standards.
Battery developer Greater Bay Technology (GBT) has initiated series production of all-solid-state battery cells at its facility in Nansha, Guangzhou. The production takes place on 1 GWh of capacity converted from existing lithium-ion lines, marking a shift from pilot samples to commercial output.
What Happened
GBT’s production cells met the requirements of China’s new GB/T 48093.1-2026 standard, which defines solid-state batteries by requiring an opened cell to lose less than 0.5% of its mass after being baked for six hours in a vacuum at 120° C. The cells were tested by the National Power Battery Innovation Center and also passed China’s GB 38031-2025 safety standard, including a nail penetration test that resulted in no fire or explosion. The platform supports specific energy densities ranging from 260 to 480 Wh/kg across generations, with the first generation utilizing automotive-grade pouch formats and established electrode materials to facilitate vehicle qualification.
Why It Matters
The production method leverages a key industrial advantage: GBT’s organic-inorganic composite electrolyte is introduced as a liquid precursor and solidified in place, allowing the use of conventional lithium-ion equipment for electrode preparation, stacking, formation, and testing. Only the electrolyte-filling station was rebuilt for injection and curing in a dry, oxygen-free micro-environment. This approach allows the converted line to switch back to lithium-ion production if needed, offering flexibility to manufacturers. The remaining 4 GWh capacity at the plant can be converted as orders increase. Strategic partnerships have been formed with Hubei Liming Lithium Technology, the Shenzhen Vertical Take-off and Landing Aircraft Innovation Center, and European electric light commercial vehicle developer FLYNT.
The Bottom Line
GBT founder and CTO Huang Xiangdong noted that the transition from A-samples in April to series production in October utilized an existing line with a new core. Daniel Kirchert, co-founder of FLYNT, stated that the existence of a certified cell coming off a recognizable line shifts the industry question from whether solid-state technology will arrive, to how manufacturers can integrate it into their current facilities.
