Lithium-Ion Battery Safety Tip
 
By Fire Marshal William Daywalt
May 8, 2025
 

Lithium-ion batteries supply power to various devices, including smartphones, laptops, e-scooters and e-bikes, e-cigarettes, smoke alarms, toys, and even cars. If not used correctly or if damaged, these batteries can catch fire or explode.

The problem: These batteries store a large amount of energy in a small amount of space. Sometimes, batteries are not used correctly. Batteries not designed for a specific use can be dangerous. Like any product, a small number of these batteries are defective. They can overheat, catch fire, or explode.

Stop using the battery if you notice any of the following problems: odor, change in color, excessive heat, deformation, leakage, or unusual noises. If it is safe to do so, move the device away from anything that can catch fire and call 9-1-1.

Remember to:

• Purchase and use devices that are listed on a qualified testing laboratory's list.
• Always follow the manufacturer’s instructions.
• Only use the battery that is designed for the device.
• Put batteries in the device the right way.
• Only use the charging cord that came with the device.
• Do not charge a device under your pillow, on your bed, or on a couch.
• Do not keep charging the device or the device battery after it is fully charged.
• Keep batteries at room temperature when possible. Do not charge them at temperatures below 32°F or above 105°F.
• Store batteries away from anything that can catch fire.

Do not dispose of lithium-ion batteries in the trash. Recycling is always the best option. Take old batteries to a designated battery recycling location.

When charging an E-bike, charge your battery in a flat, dry area away from children, direct sunlight, liquids, tripping hazards, and in a location where the e-bike is not at risk of falling. Store e-bikes, e-scooters, and batteries away from exit doors and anything that can get hot or catch fire. Only have device repairs performed by a qualified professional.

If you see a fire … Leave the building immediately because the fire will emit highly toxic smoke, become a large, rapid spreading fire in just a minute or two, and the fire will burn extremely hot. Don’t try to fight the fire. Get out of your home and call 9-1-1.

I hope you learn a little bit about Lithium-Ion Battery Safety. Please practice these safety tips to protect your home and family from this fire risk.

Stay safe, Upper Merion.