Lithium-ion batteries are all around us: They can be in your phone, in your laptop, in an e-bike or an electric car. There may be several within arm’s reach and hundreds of them in your building.

If a lithium-ion battery gets too hot or is damaged, it can catch fire or even explode.
A battery can emit a jet of flame up to 1100 C (2012 F), almost as hot as a blowtorch, and it reaches that temperature in about a second.
A smoke alarm won't help you at the beginning of this fire .. In addition to heating up faster, a lithium-ion battery doesn’t produce much smoke to detect during the first stages of failure.

https://www.nist.gov/news-events/news/2024/11/ai-can-hear-when-lithium-battery-about-catch-fire