11/24/2025
Why lithium-ion batteries catch fire
Lithium-ion batteries are capable of spontaneous ignition and subsequent explosion due to overheating. Overheating can result from an electrical short, rapid discharge, an excessive charge, physical damage, exposure to high temperatures, poor design, or manufacturing defects. Mechanical damage caused by improper handling is probably the most common cause of explosion. Recent examples of dangerous battery fires include e-bike and scooter batteries that have caught fire in New York City and a cargo ship carrying electric vehicles sustained serious damage after a fire started in one of the car batteries and quickly spread.
Warning signs of a battery problem:
Bulging or swelling
Overheating during use or charging
Unusual noises (hissing, popping)
Burning plastic or chemical smell
Visible leakage or smoke
