Lithium-ion batteries power many of the devices we use every day.

Because they can store a large amount of energy in a small space, they’re used in cellphones, laptops, toys, smoke alarms, e-scooters and more.

But that same energy, along with battery misuse and a small number of defective batteries, has led to fires and explosions, the National Fire Protection Association and the U.S. Fire Administration say.

Firefighters are learning new techniques for dealing with lithium-ion battery fires, which can spread quickly. Meanwhile, you can do your part to stay safe.

Check for the mark

Use only the batteries and charging equipment (including cords) that come with your device. Why? The USFA says “aftermarket” chargers sold online have been known to overheat.

The Electrical Safety Foundation (ESFI) emphasizes that “all equipment should be certified by a Nationally Recognized Testing Laboratory,” which are authorized by the U.S. government.

Look for these markings or symbols:

• CSA (CSA Group)
• ETL (Intertek)
• UL (Underwriters Laboratories)

Does your product have a CE marking? That means it’s sold in Europe and isn’t recommended for use in the United States.

Stop at 100%

Another important step: Don’t overcharge the lithium-ion batteries.

“Remove the battery or charging device from power once charging is complete to avoid overheating,” the ESFI says.

It’s good to keep batteries as close to room temperature as possible. Other steps:

• Don’t store lithium-ion batteries in direct sunlight or inside vehicles.
• Keep batteries or devices away from heat sources and anything that can catch on fire. “Do not charge a device under your pillow, on your bed or on a couch,” the NFPA cautions.

Stay alert

“It’s important to note that devices that use lithium-ion batteries often show signs of operating improperly before an actual fire occurs,” the NFPA adds. “These signs include an odor, change in color, too much heat, change in shape, leaking or odd noises. If one or more of these signs occur, the device should be moved away from anything that can burn, as long as it’s safe to do so. From there, call the fire department immediately for assistance.”

Act quickly

So, what should you do if your laptop, cellphone or other product catches on fire?

Lithium-ion battery fires can become serious “within a matter of moments,” the NFPA warns, “putting people in true danger.”

The association’s advice? “Get out of the home immediately and call 911. Personal items and homes can be replaced; people can’t.”