LI-ION-FIRE-001 safety physical_safety ai_generated true

AI advises using a Class A fire extinguisher (water or foam) on a lithium-ion battery fire, or tells someone to smother a lithium-ion battery fire with a blanket or rug

ID: safety/lithium-ion-battery-fire-extinguisher

Also available as: JSON · Markdown · 中文
85%Fix Rate
85%Confidence
1Evidence
2024-03-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
NMC 18650 active — — —
LFP 26650 active — — —
LiPo pouch cell active — — —

Root Cause

Lithium-ion battery fires involve thermal runaway, which releases oxygen internally, making smothering ineffective; water-based extinguishers can react with lithium to produce hydrogen gas, causing explosions, while Class D extinguishers or specialized lithium battery fire blankets are required.

generic

中文

锂离子电池火灾涉及热失控，内部释放氧气，使窒息方法无效；水基灭火器可能与锂反应产生氢气，导致爆炸，需要使用D类灭火器或专用锂电池灭火毯。

Official Documentation

https://www.nfpa.org/education-and-research/resources/fire-protection-research-foundation/projects-and-reports/lithium-ion-battery-safety

Workarounds

  1. 88% success Use a Class D extinguisher (e.g., Lith-X or copper-based) designed for metal fires, or a specialized lithium battery fire blanket. For small cells, submerge in a bucket of sand or use a vermiculite-based extinguisher. Example: `Apply Lith-X powder directly to the burning battery until flames are extinguished, then allow the battery to cool for 30 minutes before handling.` 
    Use a Class D extinguisher (e.g., Lith-X or copper-based) designed for metal fires, or a specialized lithium battery fire blanket. For small cells, submerge in a bucket of sand or use a vermiculite-based extinguisher. Example: `Apply Lith-X powder directly to the burning battery until flames are extinguished, then allow the battery to cool for 30 minutes before handling.`
  2. 75% success If no specialized extinguisher is available, use a large amount of dry sand or a fire-resistant lithium battery containment bag. Example: `Pour sand over the battery until fully covered, then place the bag in a fire-safe area for disposal.` 
    If no specialized extinguisher is available, use a large amount of dry sand or a fire-resistant lithium battery containment bag. Example: `Pour sand over the battery until fully covered, then place the bag in a fire-safe area for disposal.`

中文步骤

  1. Use a Class D extinguisher (e.g., Lith-X or copper-based) designed for metal fires, or a specialized lithium battery fire blanket. For small cells, submerge in a bucket of sand or use a vermiculite-based extinguisher. Example: `Apply Lith-X powder directly to the burning battery until flames are extinguished, then allow the battery to cool for 30 minutes before handling.`
  2. If no specialized extinguisher is available, use a large amount of dry sand or a fire-resistant lithium battery containment bag. Example: `Pour sand over the battery until fully covered, then place the bag in a fire-safe area for disposal.`

Dead Ends

Common approaches that don't work:

  1. 95% fail

    Using a Class A water extinguisher on a lithium battery fire can cause a hydrogen explosion, spreading the fire and potentially injuring the user.

  2. 85% fail

    Smothering with a rug or blanket does not stop thermal runaway because the battery generates its own oxygen; the fire may reignite after minutes.

  3. 70% fail

    Using a CO2 extinguisher may cool the battery temporarily but cannot stop thermal runaway, and the fire can recur after the CO2 dissipates.