They power our phones, laptops and even our smartwatches, but lithium-ion batteries can become dangerous if they aren’t handled properly. As these rechargeable power sources grow more common in everyday life, safety experts are urging consumers to take precautions to prevent fires and injuries.A Hidden Hazard in Everyday DevicesLithium-ion batteries are popular because they’re lightweight, efficient and long-lasting. But when they're damaged (like the recent case of a dog getting hold of one and starting a fire), overcharged or stored incorrectly, they can overheat, catch fire or even explode.According to data from UL Solutions, there were 550 incidents in the U.S. involving lithium-ion batteries in 2024. Those incidents led to 126 injuries and 14 deaths, underscoring the risks associated with improper handling.Safety Tips from the NFPAThe National Fire Protection Association offers several simple ways to keep you and your household safe:Buy certified products. Look for safety certification marks like UL, ETL or CSA, which indicate that a product meets established safety standards.Use the original charger. Charging with third-party cables can cause overheating. Always charge on hard, flat surfaces—fabric surfaces can trap heat and increase fire risk.Recycle responsibly. Never toss lithium-ion batteries in your home recycling bin. Instead, take them to a certified battery recycling facility or designated drop-off site.Temperature and Travel PrecautionsTemperature plays a big role in battery safety. Always charge devices in a cool, dry area and keep them away from flammable materials. Avoid leaving electronics in hot cars or direct sunlight, especially during summer months.If you’re traveling by air, keep all devices containing lithium-ion batteries in your carry-on luggage; never put them in checked baggage. Spare batteries should also be stored in your carry-on, and avoid charging them during the flight.