Why phone and laptop batteries can explode and how to stay safe

Rechargeable batteries in everyday devices such as smartphones, laptops and power banks can sometimes explode or catch fire, and ZDNET says they are linked to roughly 1,500 house fires and about 5,000 overheating incidents each year.

ZDNET outlines three common causes: manufacturing defects, flawed design or counterfeit products that lack safety features, and devices damaged in use. The article notes manufacturing faults are often blamed in media coverage but are relatively rare due to safety checks, while cheap or counterfeit items frequently omit protections found in reputable products.

To reduce risk, ZDNET recommends buying named-brand products from reputable retailers, stopping use of any device that is damaged or shows swelling or overheating, checking devices yearly, avoiding charging in pockets or hot places, not leaving charging items on or near flammable objects, following recall advice, and seeking professional help if unsure.

If a battery does ignite, the guidance is clear: do not throw water on the fire, use a suitable fire extinguisher or fire blanket, evacuate the building, avoid breathing the fumes, call the fire department and seek medical attention for any injuries. The article adds that, overall, electronic devices are generally safe when bought from known brands and treated with care.

Key Topics

Tech, Rechargeable Battery, Lithium-ion Battery, Smartphone, Laptop, Power Bank