Lithium-ion batteries power modern life—laptops, phones, e-bikes, power tools. They also burn. On June 9, 2026, ZDNET writer Adrian Kingsley-Hughes published an account of watching one catch fire. The piece landed with a blunt warning: these batteries are now among the leading causes of fires.
That fact should not surprise anyone who has followed the technology over the past decade. Lithium-ion chemistry packs enormous energy into a small space. That is its virtue and its danger. When the internal separator between anode and cathode fails—through physical damage, manufacturing defect, or thermal runaway—the battery vents flammable electrolyte. It ignites. It burns hot. It is hard to extinguish.
The problem has grown with the proliferation of devices. In 2020, the Federal Aviation Administration recorded at least one lithium battery fire or smoke event on a U.S. aircraft every 10 days. By 2023, New York City alone reported more than 200 fires linked to lithium-ion batteries, mostly from e-bikes and scooters. The city blamed them for 13 deaths that year. The numbers have climbed since.
Kingsley-Hughes did not provide new statistics in his June 9 report. He did not need to. The essential point he made is that a damaged lithium battery is not a minor inconvenience—it is a serious hazard. The ZDNET key takeaways state it plainly: damaged lithium-ion batteries can be extremely hazardous. Users must take necessary precautions.
What precautions? The source material does not list them in detail. But general safety guidance from fire authorities is consistent. Do not charge batteries unattended. Do not use aftermarket chargers. Stop using a battery that is swollen, hot, or dented. Dispose of damaged cells at designated recycling centers, not in household trash. Store batteries at moderate temperatures. Do not crush or puncture them.
The challenge is that most users do not think about battery chemistry when they drop a phone or leave a laptop on a bed. They should. A dented case can mean a compromised separator. A device that gets hot during charging may be entering thermal runaway. Kingsley-Hughes watched that happen. He wrote about it so others could recognize the signs before the fire starts.
The timing of his report matters. Lithium-ion batteries are not going away. They are the standard for portable electronics, electric vehicles, and grid storage. Manufacturers are working on solid-state alternatives, but those are years from mass production. For now, the risk is baked into every device that holds a charge.
Fire departments have adapted their training. Some now use specialized extinguishing agents for lithium fires. Others rely on large amounts of water to cool the battery below ignition temperature. But prevention is still the best defense. That means user awareness. That means treating a damaged battery like a leaking gas can—something that can explode if mishandled.
Kingsley-Hughes made that point in his ZDNET piece. He did not sensationalize. He reported what he saw. The fact that lithium-ion batteries are now a leading cause of fires is a direct consequence of how many of them exist in the world. More batteries. More failures. More fires.
The solution is not to abandon the technology. It is to respect the energy density inside that black plastic casing. A battery that looks fine may not be fine. A battery that has been dropped, overcharged, or exposed to heat is a candidate for failure. The user who knows that is safer than the user who does not.
Kingsley-Hughes wrote his piece so more people could be the safer kind.
