Quick Takeaways
  • Two companies deepen collaboration to accelerate sodium-ion batteries as a viable alternative for automotive low-voltage applications.
  • The partnership targets European supply chain resilience and prepares sodium-ion technology for large-scale industrialization by decade end.
On January 7, Clarios announced an expanded strategic partnership with Swedish battery innovator Altris under a joint development agreement centered on the power sodium platform. The Clarios sodium-ion battery partnership was unveiled at CES 2026, reinforcing the company’s focus on next-generation low-voltage battery technologies for automotive applications.
Clarios Sodium-Ion Battery Partnership Strengthens European Footprint
As part of the Clarios sodium-ion battery partnership, the company has increased its investment in Altris to accelerate technology development while building a resilient European supply chain for sodium-ion batteries. This move aligns with growing industry demand for alternative battery chemistries that reduce dependency on traditional materials without compromising performance.
Automotive Testing Advances Through Joint Cell Development
  • Under the expanded collaboration, Clarios, Altris, and InoBat are jointly developing sodium-ion test cells in Slovakia specifically for automotive use.
These prototype cells are being evaluated at Clarios’ research and development facilities in Germany, where testing has demonstrated strong cold-start capability, high power output, and reliable operation in winter driving conditions.
Path to Scaled Manufacturing by Decade End
Looking ahead, the Clarios sodium-ion battery partnership is designed to move beyond development and validation into industrialization. Clarios plans to begin large-scale production of low-voltage sodium-ion batteries by the end of the decade, with manufacturing expected to be established at a facility in Europe or the United States, supporting future vehicle electrification needs.
Company Press Release

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