Svolt Energy plans to start volume deliveries of its first-generation semi-solid-state batteries in 2026, marking its entry into a segment that several Chinese manufacturers are now preparing to commercialise.
Chairman and CEO Yang Hongxin announced the timeline at the 2025 World Power Battery Conference on 12 November, saying the new cells will move into C-sample batch trial production soon following completion of development.
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The first-generation square cells feature an energy density of 270 Wh/kg and have already secured orders from a major European EV brand, according to the company’s presentation released on 15 November. Yang said the batteries will also be used in an eVTOL project for a Chinese state-owned enterprise. Svolt has set up a 2.3 GWh production line dedicated to semi-solid-state technologies as it prepares for mass manufacturing. “The product has secured orders from a renowned European electric vehicle brand,” Yang said.
Svolt is simultaneously developing second-generation semi-solid-state cells with an energy density target of 400 Wh/kg, with plans to complete semi-solid-state pouch cells rated at 450 Wh/kg by 2028. The company argues that semi-solid electrolytes can improve the safety of ternary lithium batteries, which remain a preferred option for high-end EVs but are implicated in a majority of EV thermal runaway incidents. “By introducing non-flammable, non-corrosive solid electrolytes, the company enhances safety without sacrificing performance or increasing manufacturing costs,” Yang said.
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Local media previously reported that Svolt aims to begin trial production of a 140 Ah semi-solid-state cell in the fourth quarter, with mass supply to next-generation Mini models expected in 2027. Other companies are advancing similar technologies: Dongfeng Motor told the same conference that it plans mass production of a 350 Wh/kg solid-state battery for vehicle integration in September 2026, targeting a 1,000-km driving range. Svolt, spun out of GWM in 2018, ranked seventh in China’s power battery market in October with 2.27 GWh installed and a 2.71% share, according to data from the China Automotive Battery Innovation Alliance.