Oct. 5, 2025 — As National Fire Prevention Week begins, the Westchester County Department of Emergency Services (DES) is joining a nationwide effort to raise awareness about the dangers of lithium-ion batteries, which have become a leading cause of dangerous and sometimes deadly fires.

“Across Westchester and throughout the country, firefighters are continuing to see a significant number of fires caused by lithium-ion batteries,” said Emergency Services Commissioner Susan Spear. “During Fire Prevention Week, the fire service is highlighting the danger these batteries can pose when they are not charged, stored, or disposed of properly.”

Safety Tips for Lithium-Ion Batteries

DES Fire Division personnel shared the following guidelines to reduce the risk of fire:

• Do not charge any device under a pillow, on a bed, or on upholstered furniture.
• Keep batteries at room temperature; avoid leaving them in direct sunlight or hot vehicles.
• Store batteries away from anything flammable.
• Never leave batteries and devices unattended while charging.
• Always use the charger and cord supplied with the device.
• Replace and properly dispose of any battery that changes shape, sparks, or emits unusual sounds.

Understanding the Risk

Lithium-ion battery fires often occur during a process known as thermal runaway, which causes the battery to burst into flames or explode, releasing highly flammable and toxic gases. If thermal runaway begins, DES advises residents to leave the area immediately and call 911.

Proper Disposal

Residents are reminded that lithium-ion batteries should never be placed in household trash. Westchester County offers disposal at its Hazardous Materials Recovery Facility in Valhalla. Appointments can be scheduled at environment.westchestergov.com or by calling the Recycling Help Line at 914-813-5425.