Lithium-ion batteries power many devices used at home and at work. Phones, laptops, tools, drones, e-bikes, and electric vehicles all rely on them. They hold a large amount of energy, which makes them useful but also creates fire risks when the battery is damaged or handled poorly.

Why Lithium-Ion Batteries Catch Fire

These batteries can ignite if they overheat. Overheating can happen due to electrical shorts, rapid discharge, excessive charging, physical damage, exposure to high heat, poor design, or manufacturing defects. Physical damage is one of the most common triggers. A crushed or punctured battery can release energy suddenly and cause ignition.Recent incidents include e-bike and scooter battery fires in New York City, along with a cargo ship fire that spread after one electric vehicle battery failed.

Warning Signs of a Battery Problem

• Bulging or swelling
• Heat during use or charging that feels unusual
• Hissing or popping sounds
• A chemical or burning plastic smell
• Leaking fluid or visible smoke

Charging Tips That Reduce Fire Risk

• Use only the charger and cable recommended by the manufacturer
• Avoid overnight or unsupervised charging
• Charge on a hard surface that cannot burn
• Unplug the device once it reaches full charge
• Charge e-bikes and electric vehicles outdoors when possible and away from structures

How to Store Batteries Safely

• Keep batteries away from extreme hot or cold conditions
• Store them out of direct sunlight
• Do not place old or damaged batteries in drawers
• Recharge stored devices every few months if they will not be used for long periods

Taking Care of Devices

• Do not drop or crush devices that contain lithium-ion batteries
• Replace any battery that looks swollen or damaged
• Avoid exposing batteries to water unless the device is designed for it
• Never charge a battery that has been wet or appears damaged

What To Do if a Battery Fire Starts

• If possible, unplug the device and move it away from flammable items
• Water can be used to put out small lithium-ion battery fires
• If the fire spreads or someone is hurt, evacuate and call emergency services

Stay Informed, Stay Protected

Safe charging, proper storage, and careful handling can prevent most battery incidents. A little attention to warning signs can help protect your home or business from fire risks linked to lithium-ion batteries.