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Paso Robles firefighters warn of dangers of lithium-ion batteries

October 7, 2025

By KAREN VELIE

From phones to power tools, firefighters in Paso Robles warn the community of the dangers of lithium-ion batteries during fire prevention week.

Firefighters are asking the community to focus on safety when using lithium-ion batteries. Paso Robles Fire and Emergency Services wants to raise awareness of the fire risks these common rechargeable batteries pose.

Used in phones, laptops, tools, e-cigarettes, cars and toys – lithium-ion batteries can overheat, catch fire, or explode if damaged or misused.

Buy, charge, and recycle safely

• Buy smart: Look for certified safety labels and avoid unverified online products.
• Charge safely: Use original or approved chargers, charge on hard surfaces – never on beds or couches and unplug when fully charged.
• Recylcyle properly: Never toss batteries in the trash or curbside recycling bins and contact the San Luis Obispo County Integrated Waste Management Authority for local disposal guidelines at (805) 782-8530.

“Lithium-ion batteries are everywhere, and while convenient, they must be handled appropriately,” said Paul Patti, battalion chief/fire marshal. “This campaign helps keep our community informed and safe.”

 


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Lithium-ion battery fires are best considered as Class B (flammable liquids) due to the flammable electrolyte, and also pose Class C (electrical) hazards from the electrical current and sometimes Class D (combustible metal) hazards if there’s an associated metal housing. They do not fit a single category because they involve multiple types of fuel, and a standard ABC or BC extinguisher is generally recommended over water, which is dangerous on such fires.

Why they are complex:

Flammable Electrolyte (Class B): The electrolyte, a flammable liquid, is the primary fuel source in a lithium-ion battery fire, behaving similarly to gasoline or paint thinner when it ignites.

Electrical Hazard (Class C): The battery is still energized, creating a significant electrical hazard during a fire.

Combustible Metal (Class D): Lithium-ion batteries can involve metal casings, and some packaging materials are also combustible.

How to address the hazard:

Use the right extinguisher: A dry chemical ABC or BC extinguisher is appropriate for a lithium-ion battery fire.

Avoid water: Do not use water, as it can spread the fire and cause a dangerous reaction with any lithium present.

Call for help: In the event of a large fire, especially in an electric vehicle, evacuate the area immediately and call emergency services.

Let it burn out: If a fire cannot be extinguished safely, it’s best to place the device in a safe, controlled outdoor location to allow it to burn out completely.


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