World’s First Semi-Solid-State Battery EV ‘MG4’ Begins Deliveries

Published: Dec 19, 2025 09:20

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MG Motor, a brand under China’s state-owned automaker SAIC Motor (Shanghai Automotive Industry Corporation), has begun delivering the MG4 model equipped with a semi-solid-state battery in China.

SAIC MG stated that the quasi-solid-state battery, which reduces the proportion of liquid electrolyte to 5%, significantly lowers the risk of combustion while improving battery lifecycle performance. In a recent nail penetration test, the battery showed no signs of smoke, fire, or explosion for two hours, demonstrating a safety level 20% higher than that of conventional batteries.

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