NIO Mass-Produces Solid-State Battery: 1,200km Range, Winter Performance No Longer Crippled
In September 2027, NIO announced the official mass production of its solid-state battery jointly developed with CATL. With an energy density of 500Wh/kg, the ET9 equipped with this battery achieves 1,200km range, and retains over 85% capacity at -30°C.
Overview
September 2027: solid-state batteries finally move from lab to production line.
NIO announced the official mass production of its solid-state battery pack jointly developed with CATL. The first ET9 models equipped with this battery have begun delivery, marking a qualitative leap in range and low-temperature performance for new energy vehicles.
Performance Data
| Parameter | Ternary Lithium (2026) | Solid-State (2027) |
|---|---|---|
| Energy density | 280Wh/kg | 500Wh/kg |
| Official range (CLTC) | 650km | 1,200km |
| Winter range retention (-30°C) | ~52% | 87% |
| 10%-80% fast charge time | 28 min | 9 min |
| Battery pack weight | 520kg | 310kg |
| Design lifespan | 600,000km | 1,000,000km |
Technical Breakthrough
The biggest advantage of solid-state batteries over traditional liquid lithium batteries is safety — solid electrolytes are non-flammable, fundamentally eliminating the risk of thermal runaway.
NIO's battery technology chief stated that the new battery passed extreme tests including nail penetration, crushing, and high temperatures without any fire or explosion.
Market Reaction
Following the announcement, NIO's Hong Kong-listed shares surged 14.2% in a single day. Tesla China publicly accelerated its own solid-state battery R&D project, and Volkswagen's ID series immediately launched a limited-time discount campaign to stay competitive.
One auto blogger commented: "If this battery really performs as advertised, internal combustion engine vehicles can finally be sentenced to death."
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Disclaimer
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