That is a fair question.

Because safety claims in the battery market are often made in broad terms. People talk about “safe chemistry,” “low propagation risk,” or “better thermal stability,” but very often the discussion stays theoretical.

At some point, the most important thing is simple:

What does the cell actually do during an abuse or thermal event?

That is why we wanted to share something more concrete, a short video showing the real behavior of the cell during such an event.

And what you see is exactly what we described before.

• No flames.
• No sustained fire.
• No propagation.
• Gas release instead of combustion.
• Temperatures staying below approximately 250°C.

This matters because battery safety should never be judged only by normal operation. The real value of a chemistry becomes visible when you look at its behavior in the worst-case scenario.

In other words, safety is not only about preventing failure.
It is also about controlling what happens if failure occurs.

Why this matters so much in battery system design

At cell level, abuse behavior defines the starting point for everything that follows at module and pack level.

If a cell enters a thermal event with extreme temperatures, sustained combustion, and a strong tendency to propagate into neighboring cells, then the entire system architecture has to be built around containing that level of risk. That usually means more shielding, more thermal barriers, more spacing, more cooling considerations, and more complex secondary safety systems.

If the cell behaves in a more controlled way, the design philosophy changes.

That does not mean the system can be designed carelessly. It means the engineer is starting from a more stable baseline.

And that baseline is extremely important.

With Sodium-Ion cells, the safety behavior observed in thermal abuse testing is one of the key reasons why we describe the chemistry as engineered toward LTO-level safety performance, while still remaining cost-effective and scalable for real-world deployment.

That combination is what makes it so relevant.

Because in the end, the market does not only need safe batteries.
It needs batteries that are safe, practical, and commercially realistic at the same time.

What the video actually shows

The short answer is this:

The cell does not transition into the kind of violent sustained combustion that many people associate with worst-case battery failure.

Instead, the observed behavior is characterized by gas release, without sustained fire, and without propagation to neighboring cells. Peak temperatures remain below roughly 250°C.

That does not mean the event is harmless.
Any abuse or thermal event must be treated seriously.

But from an engineering point of view, this is a very important distinction.

Because a controlled gas-release event is fundamentally different from a high-temperature fire scenario with ongoing combustion and escalating thermal spread.

That difference affects how you think about:

• pack architecture
• venting strategy
• spacing and separation
• thermal shielding
• protection of neighboring components
• overall safety margins at module and pack level

So when we talk about high inherent safety, this is what we mean.

Not a marketing phrase.
A real and observable difference in failure behavior.

Safety is about worst-case behavior, not only normal operation

One of the biggest mistakes in battery discussions is to focus too heavily on nominal performance while not paying enough attention to abuse behavior.

• Energy density matters.
• Power matters.
• Cycle life matters.
• Cost matters.

But when batteries move into real deployments, safety becomes one of the most critical factors of all.

And safety is not proven by showing that a cell performs well under standard operation.

Safety is proven by understanding what happens when the system is stressed beyond normal limits, and by designing around that reality.

That is why abuse testing is so important.

It gives a more honest view of the chemistry.

And it helps answer the questions that system designers, integrators, and customers should really be asking:

• What is the event profile?
• What temperatures are reached?
• Is there sustained flame?
• Is there combustion?
• Is there propagation?
• How predictable is the failure behavior?
• What does that mean for system-level safety design?

Those are the questions that matter in the real world.

Why this is relevant for real applications

This kind of safety behavior is particularly important for applications where robustness, simplicity, and risk control matter as much as pure performance.

That includes areas such as:

• stationary energy storage
• mobility applications
• industrial battery systems
• 12V and low-voltage platforms
• systems operating in demanding temperature environments

In these markets, safer and more controlled cell behavior can open the door to simpler pack-level design, reduced complexity in secondary safety systems, and a more practical overall integration concept.

Again, that does not mean safety measures disappear.

It means the chemistry itself can do more of the safety work from the beginning.

That is often a much stronger engineering approach than trying to compensate for a more reactive cell with additional system complexity later.

The broader takeaway

When people ask what sodium-ion safety looks like in real life, the most honest answer is:

It should be judged by actual behavior under abuse conditions.

That is why we believe concrete demonstrations matter.

In the video, you can see a thermal event profile with no flames, no sustained fire, no propagation, gas release instead of combustion, and temperatures below approximately 250°C.