Can Lithium-Ion Batteries Withstand Extreme Conditions?

Lithium-ion batteries are an essential part of modern life, powering everything from smartphones and laptops to electric vehicles (EVs) and power tools. By design, they are often exposed to extreme conditions. Your phone can overheat in a parked car, laptops are constantly transported, and EV batteries spend their life inside a vehicle exposed to fluctuating temperatures. Yet, most of the time, these conditions alone don’t cause a serious safety issue.

What Triggers Thermal Events?

When thermal events occur, it is rarely because of cold, heat, or typical storage environments. More often, the root cause is a defect within the cell itself, physical damage, or unforeseen circumstances such as car accidents—or even rodents chewing through wiring.

Once a battery is damaged or defective, it must be handled as hazardous material for storage and transportation. This includes having strong standard operating procedures (SOPs) for:

• Employee safety in handling the battery.
• Facility-level precautions to minimize risks.
• Safe transport to an end-of-life recycler to remove the hazard from your operation.
  

Why Thermal Runaway Is So Serious

Many people underestimate how volatile a thermal runaway can be. Manufacturers often claim their designs are safe and resistant to runaway. Yet, when tested at 100% state of charge, even the most advanced batteries can surprise experts with the level of destruction.

• Scale of impact: Even smaller batteries, like those in power tools, have been known to cause house fires. Larger format EV batteries can lead to even larger events.
• Propagation risk: While batteries are built in modules to reduce cascading failures, propagation between modules can still occur, resulting in extreme fires or rapid disassembly events.
• Toxic off-gassing: Thermal runaway releases flammable gases and carcinogens. These fumes not only pose inhalation risks but can create explosive environments if ignited.
• Extreme heat: Peak temperatures at the cell level can reach up to 1,700°F (927°C)—hot enough to liquefy aluminum within seconds. Though container-level temperatures are lower, they still present an extreme fire hazard.
  

Designing for Containment and Safety

Thermal runaway can last for hours—or even days—making containment critical. Proper housing, containers, and facility preparedness are key to:

• Protecting employees and property during an event.
• Allowing the fire to burn out safely without escalating to an explosion.
• Ensuring that once the event is over, the damaged battery can be moved to recycling.
  

Final Takeaway

Thermal events in lithium-ion batteries are not just theoretical—they are destructive, unpredictable, and often underestimated. While most designs focus on safety and minimizing risks, no system can fully eliminate the possibility of runaway. That’s why strong SOPs, protective containers, and safe disposal pathways are essential to managing battery hazards responsibly.