The semi-solid-state battery globally launched in the MG4
- jiangyaoyao0501
- 6 days ago
- 1 min read
This is the globally launched semi-solid-state battery in the MG4, and it has several impressive features. First, its electrolyte content is only 5%, making it almost a purely solid-state technology. Second, it has passed a 10-nail penetration test, which has never been done in the industry before.

This 10-nail penetration test has three remarkable aspects:
1. The number of nails is relatively large, with as many as ten nails ;

2. These nails completely penetrate the separator in the middle of the battery—in other batteries, this would typically result in a short circuit, but the MG4's semi-solid-state battery neither catches fire nor emits smoke;

3. SAIC Qingtao already has a complete production line in Suzhou;
4. Technological equality—the version equipped with this semi-solid-state battery has managed to bring the price below 100,000 RMB.
The world's first mass-produced vehicle with a semi-solid-state battery has broken the 100,000 RMB price barrier, truly embodying the concept of technological equality. This is a highly groundbreaking technological advancement, representing a small step for the MG4 but a giant leap for the industry. This is the original battery used in the penetration test.


