WEDNESDAY, FEBRUARY 9, 2022
Why can lithium batteries catch fire?
Lithium batteries use — you got it — lithium in metal or ion (Li-ion) form as their anode material. And they come with several advantages. Lithium-ion batteries are easily rechargeable and have the highest energy density of any battery technology, meaning they pack more power into a smaller space. They also can deliver a voltage up to three times higher than other battery types.
But generating all that electricity also creates heat, which can lead to battery fires — or even explosions. This is especially true when a battery is damaged or defective.
Before a failing lithium battery catches fire, there are often a few warning signs. Here’s what to look for:
• Heat: It’s completely normal for batteries to generate some heat when charging or in use. But if your device’s lithium-ion battery feels extremely hot to the touch, there’s a good chance it’s defective and at risk to start a fire.
• Swelling: When a lithium battery fails, another common sign is battery swelling. If your battery looks swollen, you should stop using it immediately. Similar signs include any type of lump or bulge, or leakage from the device.
• Noise: Failing lithium batteries have also been reported to make hissing or cracking sounds.
• Odor: If you notice a strong or unusual odor coming from the battery, this is also a bad sign.
• Smoke: This one’s a little more obvious. But if your device is smoking, a fire has already started.
What do I do if my lithium battery is failing?
If your device is showing any of the above warning signs, take the following steps:
• Immediately turn off the device and unplug it from the power source.
• Slowly move the device to a safe, isolated area away from anything flammable. Use tongs or gloves to avoid touching the device with your bare skin.
• Call the device manufacturer or retailer for further instructions.
How can I prevent a battery fire?
• Follow instructions. Always follow the device manufacturer’s instructions for storage, use, charging and maintenance.
• Avoid knock-offs. Only replace batteries and chargers with components specifically designed and approved for your device.
• Watch where you charge. Avoid charging your device on flammable surfaces like under a pillow, on your bed or on the couch.
• Unplug your device. Remove devices and batteries from the charger once they are fully charged.
• Store batteries properly. Lithium-ion batteries should always be stored in a cool, dry place. Don’t place batteries in direct sunlight.
• Inspect for damage. Regularly inspect your device and batteries for the warning signs listed above.
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