VIDEO: Researchers at the National Institute of Standards and Technology (NIST) have developed a way to use sound to detect when lithium-ion batteries are about to catch fire. The NIST team included Wai Cheong “Andy” Tam and Anthony Putorti. “While watching videos of exploding batteries, I noticed something interesting,” said Tam. “Right before the fire started, the safety valve in the battery broke and it made this little noise. I thought we might be able to use that.” He was not the first to make this observation, but he wanted to see if he could test the idea for himself.
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