MG4 confirmed as first mass-market EV with semi-solid-state battery, launches August 5

MG4 is confirmed to be the first mass-market electric vehicle with a semi-solid-state battery. The MG4 electric hatchback will launch on August 5 in China, announced by SAIC’s MG brand.The company claims that this semi-solid-state battery uses only 5% liquid electrolyte and has passed strict safety tests, including a 360-degree puncture test. It offers a CLTC-rated range of 537 km (about 334 miles) and an energy density of 180 Wh/kg.
The battery also retains 13.8% more range in cold weather (19.4°F) compared to traditional lithium-iron-phosphate batteries, making it safer and more efficient in colder climates.

The MG4 features a 70 kWh battery pack powering a 120 kW rear-wheel-drive motor. This setup may provide better driving dynamics than competitors like the BYD Dolphin, which uses front-wheel drive with 70-150 kW motors.

The MG4 is larger than the Dolphin, measuring 4,395 mm long, 1,842 mm wide, and with a 2,750 mm wheelbase, which improves interior space and cargo capacity.

The design of the MG4 is inspired by MG’s Cyberster, with a sculpted front and new colours called Qingbo Green and Donglai Purple. The car will also debut the MG×Oppo cockpit system, developed with Oppo.

This system integrates smartphone functions, enabling voice commands, gesture navigation, and app synchronisation for a more connected user experience.

Production has started at SAIC’s Nanjing plant. The MG4 will initially be available only in China.