Auto Manufacturers Incorporating NTSB Recommendation on Electric Vehicles

Fires in electric vehicles powered by high-voltage lithium-ion batteries pose the risk of electric shock to emergency responders from exposure to the high-voltage components of a damaged lithium-ion battery. A further risk is that damaged cells in the battery can experience thermal runaway—uncontrolled increases in temperature and pressure—which can lead to battery reignition. The risks of electric shock and battery reignition/fire arise from the “stranded” energy that remains in a damaged battery.

https://www.ntsb.gov/news/press-releases/Pages/NR-Auto-Manufacturers-Incorporating-NTSB-Recommendation-on-Electric-Vehicles.aspx