Last week, federal investigators reported that the battery of a Tesla Model S reignited twice after the car’s fiery crash in May. This isn’t the first time an electric vehicle battery has caught fire again after being put out. Why does this happen — and how are first responders being trained to deal with new risks from EV batteries?
The lithium-ion batteries in electric vehicles are basically the same as the ones in your phone, says Joshua Lamb, a principal investigator at Sandia National Laboratories’ Battery Abuse Testing Laboratory. There’s just more of them. Unfortunately, li-ion batteries are prone to exploding anyway when they get overheated or when the wrong charger or current is used.
“There’s always a risk when you’re talking...
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