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Hybrid Battery Test

Chemistry

Na-ion

Sodium ion

The one genuinely new chemistry reaching customers, and it is aimed squarely at the cold.

At a glance

  • Energy density. 175 Wh per kg on CATL's figure, so between iron phosphate and the nickel chemistries
  • Found in. CATL's Naxtra cell, going into a Changan passenger vehicle for a mid 2026 launch
  • Life. No independent long term data exists yet.
  • Weakness. Unknown at fleet scale.

Where you will find it

CATL's Naxtra cell, going into a Changan passenger vehicle for a mid 2026 launch.

What is good about it

Claimed to hold more than 90 percent of capacity at minus 40 Celsius and to keep working to minus 50. For a cold climate owner that matters more than any solid state announcement.

What is not

New, unproven in a used market, and not yet in anything you can buy second hand.

How long it lasts

No independent long term data exists yet.

Heat and cold

Unknown at fleet scale.

Source. CATL, primary. Read 16 September 2026.

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