Lithium-ion batteries power many of the devices we use every day, including cell phones, tablets, power tools, e-bikes, e-scooters, lawn equipment, and electric vehicles. While these batteries are generally safe, improper charging, physical damage, or the use of incompatible charging equipment can increase the risk of fire.

By following a few simple safety practices, you can help protect your home and family.

Charge Batteries Safely

Always follow the manufacturer's recommendations when charging lithium-ion batteries.

• Use only the charger designed for your device or one approved by the manufacturer.
• Avoid counterfeit or off-brand replacement batteries and chargers.
• Never use a charger or battery that is damaged or has exposed wiring.
• Plug chargers directly into a wall outlet whenever possible.
• Avoid using extension cords, power strips, or multi-plug adapters unless they are specifically rated for the charging load.
• Do not charge batteries on beds, couches, or other soft surfaces that can trap heat.
• Charge batteries in a cool, dry, well-ventilated location.

Prevent Overheating

Heat is one of the leading causes of lithium-ion battery failures.

• Keep batteries away from direct sunlight and high temperatures.
• Do not leave batteries or devices in hot vehicles.
• Unplug chargers when charging is complete if the manufacturer recommends doing so.
• Allow batteries to cool before charging if they have become hot during use.

Inspect Batteries Regularly

Stop using a battery immediately if you notice:

• Swelling or bulging
• Cracks or punctures
• Leaking fluids
• A strong chemical odor
• Excessive heat
• Smoke, sparks, or popping sounds
• Changes in color or unusual discoloration

Never attempt to repair a damaged lithium-ion battery.

Store Batteries Properly

Proper storage helps extend battery life and reduce fire risks.

• Store batteries in a cool, dry location.
• Keep batteries away from combustible materials such as paper, cardboard, clothing, and gasoline.
• Store spare batteries in their original packaging or a protective battery case.
• Prevent loose batteries from coming into contact with metal objects, such as keys, coins, or tools, which can cause a short circuit.
• Follow the manufacturer's recommendations for long-term storage.

E-Bike and E-Scooter Safety

Lithium-ion battery fires involving e-bikes and e-scooters have increased nationwide.

• Purchase products that have been tested and certified by a nationally recognized testing laboratory.
• Never modify or rebuild battery packs.
• Do not use batteries or chargers that are not designed for your device.
• Avoid charging e-bikes or e-scooters near exits or in areas that could block your escape if a fire occurs.
• Do not leave batteries charging unattended or overnight unless the manufacturer specifically states it is safe to do so.

Dispose of Batteries Safely

Lithium-ion batteries should never be thrown in household trash or recycling bins.

• Recycle batteries through an approved battery recycling program or household hazardous waste facility.
• Tape the battery terminals before transporting loose batteries to help prevent short circuits.
• If a battery is damaged, follow your local hazardous waste disposal guidelines.

If a Battery Begins to Fail

A failing lithium-ion battery may provide warning signs before a fire occurs.

If you notice smoke, hissing, popping sounds, excessive heat, or a strong chemical odor:

• Move away from the battery immediately.
• If it is safe to do so, unplug the charger.
• Evacuate the area if the battery begins smoking or burning.
• Close doors behind you as you leave to help slow the spread of smoke and fire.
• Call 911 immediately.
• Do not handle a battery that is smoking, burning, or overheating.

If a Fire Starts

Lithium-ion battery fires can spread rapidly and may reignite after the flames appear to be extinguished.

• Get everyone out of the building immediately.
• Close doors as you leave if possible.
• Call 911 from a safe location.
• Never re-enter a building for any reason until it has been determined that it is safe to do so.
• Allow firefighters to determine when it is safe to return.

Remember

Lithium-ion batteries are part of everyday life, but safe charging, proper storage and regular inspection are essential. Using manufacturer-approved batteries and chargers, avoiding damaged equipment and recognizing the warning signs of battery failure can help prevent fires before they start. If a battery appears damaged or begins to overheat, stop using it immediately and dispose of it properly.

 

For more information about lithium-ion battery safety, please go here.