PSA: Your standard extinguisher won't stop a lithium battery fire - here's what actually works

Most of us charge overnight or leave boards plugged in to balance cells. I do it too.

The problem is a standard ABC extinguisher isn't built for lithium-ion thermal runaway - it can't penetrate the cells, it won't stop reignition, and it doesn't neutralize the toxic gases a burning pack releases.

Went down a rabbit hole on this and landed on the FCL-X lineup - water-based, PFAS-free, certified to NTA 8133 (the most rigorous international standard for Li-Ion extinguishers). Three sizes worth knowing about:

• 1L - phones, laptops, small electronics
• 2L - most Onewheel garage setups, 750Wh and below
• 3L - large EUCs, e-bikes, multi-device setups

Not trying to be doom and gloom - just one of those things worth having before you need it. Happy to share the full breakdown in the comments if anyone wants it.