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Strict precautions must be taken while conducting firefighting operations due to
following Reasons:
• Lithium-ion batteries contain electrolyte that can vent, ignite, and produce sparks
when subjected to temperatures above 300°F.
• Vehicle may burn rapidly with a flare-burning effect.
• Even after the high-voltage battery fire appears to have been extinguished,
renewed or delayed fire can occur.
- Use a thermal imaging camera to ensure the high voltage battery is completely
cooled before leaving the incident.
- Always advise second responders that there is a risk of the battery re-igniting.
- In a fire, submersion or a collision that has compromised the high voltage battery,
always store it in an open area with no exposures within 50 feet.
• A burning battery could release hydrogen fluoride, carbon monoxide, and carbon
dioxide gasses. Use NIOSH/MSHA approved full-face self-contained breathing
apparatus (SCBA) with full protective gear. Even if the high-voltage battery pack is
not directly involved in a vehicle fire, approach the vehicle very carefully.
6. In case of fire
6.2 Extinguishers
• Small fires that do not involve the high voltage battery should be extinguished
using an ABC fire extinguisher. (ex. Fire caused by wiring harnesses, electrical
components, etc.)
• Do not attempt to extinguish fires that involve the high voltage battery with small
amounts of water as this can result in electrocution. Fires that involve the high
voltage battery should be extinguished using large amounts of water (min 2,650
gallons) to cool the high voltage battery. Fire fighters should not hesitate to pour
larger amounts of water on the vehicle in such scenarios. Make sure the battery is
fully cooled to avoid fire re-ignition.
6.1 Firefighting Operations
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