CATL Naxtra: Sodium-ion Batteries Enter Mass Production
Dillip Chowdary
Hardware Strategy Analyst
**CATL**, the world's largest battery manufacturer, has officially moved its **Naxtra Sodium-ion** technology into mass production. The announcement, made during its "Super Technology Day" in Beijing, marks a pivotal moment for the electric vehicle (EV) industry, providing a lower-cost, resource-abundant alternative to traditional Lithium-ion chemistries.
While sodium-ion batteries historically lagged in energy density, CATL's Naxtra series has achieved **160 Wh/kg**, sufficient for entry-level EVs and large-scale stationary energy storage. More importantly, sodium-ion performs significantly better in extreme cold, maintaining **90% of its capacity at -20°C**.
Condensing Power: 500 Wh/kg for Aviation
Beyond sodium-ion, CATL also provided an update on its **Condensed Battery** project. The firm confirmed that its **500 Wh/kg** cell has successfully completed maiden flight validation in partnership with a leading electric aviation manufacturer. This density is the "holy grail" for regional electric aircraft, enabling meaningful range for zero-emission flight.
Battery Roadmap 2026
- Naxtra Sodium-ion: Mass production Q4 2026.
- Cold-Weather Performance: 90% retention at -20°C.
- Condensed Cells: 500 Wh/kg for Electric Aviation.
- Resource Independence: Near-zero reliance on lithium/cobalt.
The Economic Shift
The shift to sodium is a strategic play to de-risk the supply chain. By utilizing abundant sodium instead of volatile lithium, CATL expects to reduce cell costs by **30-40%** at scale. This could bring the price of a standard 400km range EV below the **$20,000** threshold, driving mass adoption in emerging markets.
As mass production ramps up, the Naxtra series is expected to first appear in A-segment urban vehicles and commercial power walls, with broader automotive integration scheduled for early 2027.