CATL Unveils Sodium Batteries That Withstand Extreme Cold

Published on January 23, 2026 | Translated from Spanish
Promotional image or infographic showing CATL's Tianxing II sodium-ion battery, highlighting its performance in an extreme cold environment, possibly with temperature and capacity graphs.

CATL Presents Sodium Batteries That Withstand Extreme Cold

The industry still cannot manufacture solid-state batteries in large volumes. In response, several manufacturers are opting for an alternative: sodium-ion batteries. These stand out for operating efficiently in very low temperature conditions. The giant CATL has unveiled its new model, the Tianxing II, claiming it retains up to 90% of its nominal capacity at -40°C. ❄️

Sodium Technology Advances as a Real Option

Batteries that use sodium are positioned as a practical solution before solid-state ones lead the market. They employ sodium, an element more common and cheaper than lithium, which can reduce costs. Their main technical strength is electrochemical stability in cold, an area where traditional lithium batteries traditionally fail. This makes them particularly attractive for electrifying transportation in areas with harsh winters.

Key Advantages of Sodium Batteries:
  • They use a material (sodium) more abundant and economical than lithium.
  • They show superior stability at sub-zero temperatures.
  • They offer a viable alternative while other technologies are developed.
The future of electric mobility is not just about traveling more kilometers, but also about not stopping due to the cold.

Details and Outlook for the Tianxing II Model

CATL not only highlights the exceptional cold resistance of its Tianxing II battery. The company also notes that this design achieves high energy density and supports fast charging. Developing this technology aims to provide a safer option with predictable performance across a wide thermal range. Mass-producing it could boost the adoption of electric cars in regions with extreme climates, where current range usually drops drastically. 🔋

Features of CATL's Tianxing II:
  • Retains 90% of capacity at temperatures of -40 degrees Celsius.
  • Combines high energy density with fast charging capability.
  • Promises stable and safe operation in various conditions.

A Step Toward Universal Electrification

The presentation of the Tianxing II underscores a complementary path in battery evolution. By addressing lithium's weak point in freezing climates, sodium-ion technology could remove a major barrier to global electric mobility. This represents a significant advancement in making electric vehicles a practical and reliable option, regardless of latitude. 🚗