Here's Natron's page about safety: https://natron.energy/our-technology/safety https://natron.energy/our-technology/safety I don't think the battery is a big b

Here's Natron's page about safety: https://natron.energy/our-technology/safety https://natron.energy/our-technology/safety I don't think the battery is a big block of pure sodium. That would be unsafe. The battery electrolyte contains sodium ions, but the same is true of salt water and Gatorade. I think the industrial source of their sodium is sodium hydoxide, a common industrial feedstock. https://en.wikipedia.org/wiki/Sodium_hydroxide https://en.wikipedia.org/wiki/Sodium_hydroxide