Safe Charging of Lithium-Ion Batteries

From smartphones and tablets to wireless headphones, electric scooters, and portable chargers, lithium-ion batteries power much of our modern life. They’re lightweight, efficient, and rechargeable, which makes them an excellent choice for everyday electronics. But when used or stored incorrectly, these batteries can overheat, catch fire, or even explode. Understanding how to charge and handle them safely helps keep your family and home protected.

What to Use (and What to Avoid)

Always use the charger and cable that came with your device or a compatible one from the same manufacturer. Cheap chargers from unknown brands may not regulate power correctly, increasing the risk of overheating or fire.

Charging and Supervision

Avoid charging devices on soft surfaces, such as beds, blankets, pillows, or couch cushions. These can trap heat and potentially ignite nearby materials. Instead, place devices on a hard, flat surface while charging, away from anything that burns easily.

Don’t leave charging devices unattended, especially overnight. If a device becomes unusually hot, unplug it immediately. The same goes for portable battery packs (power banks). Airlines now recommend keeping these in sight while charging, as fires—although rare—can occur if the battery malfunctions or overheats.

Safety Around Children

Keep chargers and battery-powered devices out of reach when not in use. Curious kids might put small batteries or components in their mouths, creating a choking hazard and possibly exposing them to chemicals. Ensure children understand that damaged or swollen batteries should never be touched or played with. If a battery starts to bulge, leak, or smell unusual, stop using it immediately and contact the manufacturer or your local waste disposal service.

Proper Disposal

Lithium-ion batteries should never go in the trash. They can spark and cause fires in garbage trucks or recycling centers. Instead, take them to a designated battery recycling location. Many electronics stores, libraries, and community centers offer drop-off bins for this purpose.

The Bottom Line

Lithium-ion batteries are safe when used correctly. A few simple precautions—using the correct charger, charging in a secure location, staying nearby, and disposing of old batteries properly—go a long way toward keeping your family safe from fire or injury.