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Lithium Battery Safety

Colorful cylindrical batteries labeled "Samsung SDI" on an abstract orange background.

What every resident should know

Lithium-based batteries power much of our modern life. They’re in our phones, tablets, laptops, tools, and vehicles. Compact and efficient, they store a large amount of energy in a small space — but that power also comes with risk. Understanding how to use and dispose of them safely helps prevent fires and injuries.

Community Safety Reminder

Lithium batteries are safe when handled correctly. The Minoa Fire Department encourages all residents to:

  • Follow proper charging and storage practices
  • Recycle responsibly
  • Know the warning signs of a failing battery

By taking simple precautions, you protect your home, your family, and your community.

Where Lithium Batteries Are Found

You’ll find lithium-ion and lithium-iron batteries nearly everywhere:

  • Rechargeable devices — cell phones, laptops, power tools, and garden equipment
  • Mobility equipment — e-bikes, scooters, and electric vehicles
  • Everyday items — cameras, smoke alarms, flashlights, and remote controls

Because they’re so common, it’s easy to forget how much energy they contain. If damaged or overheated, that energy can release suddenly and violently.

Why They Can Be Dangerous

Under normal use, lithium batteries are stable. Trouble begins when they’re overcharged, punctured, exposed to heat, or made with defects. These conditions can trigger thermal runaway — a chain reaction that causes overheating, fire, or even explosion. Once ignited, lithium fires burn extremely hot, release toxic gases, and may reignite after appearing to be out.

Safe Handling and Storage

Reduce Risks by following these guidelines:

  • Use only the charger supplied or recommended by the manufacturer.
  • Keep charging areas free of paper, cloth, and other combustibles.
  • Stop using any battery that’s swollen, cracked, leaking, or smells unusual.
  • Store spares in a cool, dry place away from sunlight and metal objects.
  • Avoid dropping or crushing battery packs.

If you suspect a problem, move the battery outside or into a non-combustible container such as a metal bucket until it can be recycled safely. The Onondaga County Resource Recovery agency has tips on battery handling and storage (link).

Charging Tips

Charging is when most incidents occur. Always:

  • Plug chargers directly into wall outlets, not extension cords or power strips.
  • Charge in a well-ventilated area, away from flammable materials.
  • Never charge overnight or unattended.
  • Disconnect immediately if a battery or charger feels unusually hot.

Disposal and Recycling

Never place lithium batteries in household trash or recycling bins. When crushed or compacted, they can ignite and cause fires in trucks or facilities.

Instead:

  • Take used batteries to a household hazardous waste site or retail drop-off location. Take a look at these tips, too (link).
  • Tape the terminals with clear or electrical tape to prevent short circuits.
  • Transport them in a non-metal container such as a plastic bag or box.

If a Battery Catches Fire

If you see smoke or flames from a device:

  1. Evacuate immediately.
  2. Call 911.
  3. If safe, unplug the device and use a Class D or ABC extinguisher.
  4. Keep clear — lithium fires can reignite and release hazardous fumes.

Do not handle the battery remains until they are cool and safe.