The ‘Salt Battery’ Revolution Arrives

Just when it looked like lithium had won the electric vehicle battery race, a new challenger has rolled onto the scene – and it comes from one of the most common materials on Earth.

Chinese car manufacturer Changan and battery giant CATL have unveiled what they describe as the world's first mass-produced passenger electric vehicle powered by a sodium-ion battery, marking a major milestone for a technology that many experts viewed as years away from mainstream adoption.

 The vehicle, based on the Changan Nevo A06, is expected to reach the market during 2026 and showcases a battery chemistry that could potentially change the economics of electric motoring.

For years, the conversation around EV batteries has revolved around lithium.

Lithium-ion packs power everything from smartphones to electric cars, but growing demand has also raised concerns about supply chains, costs, and access to critical raw materials.

That's where sodium comes in.

Unlike lithium, sodium is abundant, widely available, and significantly cheaper to source.

It's found in vast quantities around the world, including in ordinary salt.

While scientists have been experimenting with sodium-ion batteries for years, the challenge has always been performance.

Compared with traditional lithium batteries, sodium cells typically offered lower energy density, meaning shorter driving ranges.

That gap appears to be narrowing.

CATL says its latest mass-production sodium-ion battery achieves an energy density of up to 175 Wh (Watt hours)/kg and can deliver more than 400km of driving range in its current form. Future versions are expected to push that figure even higher.

But range isn't the biggest selling point.

What has really caught the industry's attention is how the batteries perform in freezing temperatures.

Cold weather has long been one of the biggest challenges for electric vehicles, reducing battery efficiency and limiting driving range.

According to CATL, its sodium-ion batteries retain more than 90% of their capacity at temperatures as low as -40°C and continue operating in conditions down to -50°C.

That's a remarkable claim in an industry where winter performance remains a frequent concern.

The batteries are also being promoted as highly resistant to overheating and thermal runaway, the chain reaction that can occasionally lead to battery fires.

CATL says the new packs have undergone extreme testing, including crushing, drilling and cutting, while remaining stable.

At first glance, a sodium-powered EV launched in China might seem a long way from British roads. But the development could have important implications for UK motorists, fleets, and businesses.

One of the biggest barriers to EV adoption remains cost. Although prices are gradually falling, many drivers still see electric vehicles as significantly more expensive than petrol or diesel alternatives.

Sodium-ion technology offers the potential to reduce battery costs by using cheaper and more abundant materials.

Lower battery costs could eventually make electric vans and company vehicles more affordable, while improved cold-weather performance may help reduce some of the seasonal range concerns experienced by drivers during winter months.

Importantly, sodium-ion batteries aren't expected to replace lithium overnight. Most experts believe the future will involve multiple battery chemistries working alongside one another.

Premium long-range vehicles may continue relying on advanced lithium technologies, while sodium-ion batteries could become increasingly attractive for urban cars, delivery vehicles, and cost-conscious buyers.

The electric vehicle industry has spent the last decade focused on making lithium batteries cheaper, safer, and more efficient.

Now it appears a second race is beginning.

Whether sodium-ion batteries become a niche solution or a genuine challenger to lithium remains to be seen.

But the fact that manufacturers are already putting mass-produced sodium-powered cars onto the road demonstrates how quickly battery technology continues to evolve.

For drivers, that's good news.

More competition usually means lower costs, faster innovation, and greater choice.

And if one of the next breakthroughs in electric transport comes from the same ingredient that flavours a bag of chips, that might be one of the more surprising automotive stories of 2026.