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After my recent article on reducing the risk of fires caused by rechargeable batteries, many readers had questions about specific scenarios. This article aims to address some of those concerns and provide a balanced perspective on the risks associated with lithium-ion batteries.
It’s important to note that the lithium-ion batteries used in our devices, such as smartphones, laptops, electric tools, and electric cars, are generally safe. While it’s prudent to take precautions, it’s equally important not to become overly fixated on unlikely dangers.
Let’s dive into some common questions and discuss how to minimize the fire risk associated with rechargeable batteries.
Are the batteries in electric vehicles safe?
While my previous reporting focused on the safety of rechargeable batteries in smaller transportation devices like e-bikes and electric scooters, many readers asked about the safety of electric car batteries.
Electric cars use the same lithium-ion batteries as smartphones and e-bikes but on a larger scale. As a general rule, the larger the battery, the more energy it holds and the greater the potential fire risk.
According to Chris Cramer, senior vice president and chief research officer for UL Research Institutes, electric cars are generally less prone to fires than gasoline-powered vehicles. However, when an electric car does catch fire, it can be a severe incident.
To minimize the already low fire risk associated with electric vehicles, it’s advisable to follow the charging instructions provided in the owner’s manual. In the event of a crash, it’s recommended to take the car to an authorized dealer or repair specialist for a battery damage evaluation.
Electric car manufacturers take measures to protect the batteries, but any damage to the battery can increase the risk of a fire. If you remain concerned about the fire risk, consider charging your electric car in a location other than your garage overnight. Alternative options include charging during the day, at work, or in a separate side area away from your home.
Do lithium-ion batteries pose a higher fire risk when being charged?
Even when not plugged in, damage to a lithium-ion battery can increase its potential fire risk, according to Cramer. It’s worth noting that standard chemical fire extinguishers found in most homes cannot effectively extinguish a lithium-ion battery fire.
Daniel Flynn, chief fire marshal with the New York Fire Department, suggests using water extinguishers or residential fire sprinklers for suppressing fires from smaller batteries found in laptops and smartphones. However, when dealing with larger batteries, such as those in electric cars, it’s crucial to evacuate the area immediately and contact emergency services. Lithium-ion battery fires can spread rapidly, emit toxic fumes, and even explode.
If you notice a swollen or odorous battery in a device, stop using it and refrain from charging it. Leo Raudys, CEO of Call2Recycle, a battery recycling organization, recommends placing the battery or device in a material like cat litter or sand and keeping it away from flammable materials. Damaged lithium-ion batteries should be handled by specialized recycling centers. Conduct a web search for your city or county and “municipal household hazardous waste recycling center” for proper disposal options.
How can I find reliable and safe replacement batteries?
Kyle Wiens, CEO of iFixit, a consumer advocacy group and repair community, suggests buying replacement lithium-ion batteries from trusted stores that offer solid warranties. It’s advisable to avoid purchasing rechargeable batteries from platforms like eBay or Amazon due to the small risk of buying unsafe batteries from unscrupulous vendors. (iFixit sells batteries on its website and Amazon.)
If you choose to replace a smartphone or laptop battery yourself, take necessary precautions. Perform the repair on a concrete surface in a well-ventilated area, away from any flammable materials like curtains.
iFixit advises running the battery down to below 25 percent charge before replacing it. A depleted battery poses a reduced risk. Alternatively, you can seek assistance from a reputable repair professional to ensure safe replacement. Here’s a guide on finding trustworthy repair help for your devices.
What about the risk of in-flight fires from rechargeable devices?
While rare, in-flight fires caused by rechargeable devices can occur. Airlines prohibit lithium-ion batteries in checked luggage as a precautionary measure.
According to Cramer, airline crews are trained and equipped to handle overheating devices with rechargeable batteries. They can place the affected device in fire containment bags to minimize risks.
For personal laptops during travel, Raudys uses a fire safety sleeve, although this may not be practical or necessary for most people due to the high cost. Cramer emphasizes that the current safety precautions and crew training have been successful in mitigating the risk of battery fires on flights.
In conclusion, while there are fire risks associated with rechargeable batteries, they are generally safe when used and handled properly. By following the recommended guidelines and practicing caution, you can minimize these risks.
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