Researchers subjected at least 1,085 Lithium-ion batteries to external heat . They used thermal imaging to see what happened inside each cell . Copper inside one cell reached temperatures of two°C ( 1,985°F ) The heat also caused molten material to stream from the battery 's vent .
Researchers subjected two Lithium-ion batteries to external heat . They used thermal imaging to see what happened inside each cell . Copper inside one cell reached temperatures of at least 1,085°C ( 1,985°F ) The heat also caused molten material to stream from the battery 's vent .