Lithium-ion batteries have become indispensable to modern life. They power everything from smartphones and laptops to electric bikes, power tools and electric vehicles (EVs).
But when those batteries reach the end of their useful lives, they can create a serious problem for an industry that was never designed to handle them.
Waste and recycling facilities are increasingly finding themselves on the frontline of the lithium-ion battery fire challenge.
Batteries discarded with ordinary rubbish or recycling can be crushed, punctured or short-circuited during collection and processing, potentially triggering thermal runaway and a rapidly developing fire.
The problem is not simply the number of batteries entering the waste stream. Many are difficult to identify before they become a hazard.
A battery can become dangerous after it has been discarded
A lithium-ion battery does not suddenly become harmless when the device it powers stops working. It can retain significant stored energy, while damage to its cells can create the conditions for internal heating and thermal runaway.
This makes the waste stream particularly challenging. A battery hidden inside an electronic product can pass unnoticed into a recycling bin, collection vehicle or waste transfer station. Once there, machinery designed to process ordinary household waste can inadvertently damage it.
The US Environmental Protection Agency has warned that municipal recycling facilities are generally not designed to handle lithium-ion batteries. Batteries entering these systems can be crushed or damaged during processing and become a fire hazard.
The consequences can be substantial. An EPA analysis identified more than 240 lithium-ion battery-related fires at 64 waste-management facilities between 2013 and 2020. The batteries came from a wide range of small consumer products, including phones, laptops, hoverboards and electronic cigarettes.
More recent incidents show that the problem has not disappeared.
In July 2026, London Fire Brigade attended a fire at a waste transfer facility in Southwark involving a lithium-ion battery within a waste pile. Six fire engines and around 40 firefighters were required, with the incident taking nearly two hours to bring under control.
Just weeks later, a damaged lithium-ion battery was blamed for a fire at a recycling site in Ilford. Around three tonnes of recycling material and an industrial refuse compactor were destroyed, while fencing and trees were also damaged.
These incidents illustrate why battery fires are becoming an operational problem for the entire waste industry, not just battery manufacturers and vehicle operators.
The hidden battery problem
One of the biggest challenges is visibility.
Consumers generally know that a standalone rechargeable battery requires specialist handling. The problem is that many modern products do not look like batteries at all.
Wireless headphones, toys, electric toothbrushes, cordless tools, e-bikes, vapes, laptops and countless other products can contain lithium-ion cells. When those products are thrown into general waste or mixed recycling, workers may have no practical way of identifying the battery before it reaches machinery.
This creates a dangerous chain of events.
A battery may be dropped, compressed or struck during collection. It can then enter a waste-processing machine where additional mechanical force damages its casing or cells. If the battery develops an internal short circuit, its temperature can rise rapidly.
At that point, the problem can escalate from a damaged battery to a fire involving surrounding waste.
Why waste fires can be particularly difficult
A lithium-ion battery fire presents a different challenge from an ordinary combustible-material fire.
Thermal runaway involves a self-heating process within the battery. As the temperature rises, chemical reactions accelerate, potentially generating more heat and causing neighbouring cells to fail.
The battery can also release flammable gases. UK Environment Agency guidance published in 2026 specifically identifies damage, shorting, overheating and self-heating as fire risks at waste-battery facilities.
It also recommends considering gas detection as an early warning mechanism because gases released during lithium-ion battery failure can accumulate at different levels depending on their properties.
Once a battery has ignited inside a large pile of mixed waste, firefighters face another problem: access.
The source of the fire may be buried beneath tonnes of material, while other batteries can be scattered throughout the pile. Cooling the immediate flames does not necessarily eliminate the underlying hazard, and the possibility of reignition has to be considered.
For waste operators, preventing the fire from spreading can therefore be as important as extinguishing the initial ignition source.
Regulation is beginning to catch up
The growing risk is forcing waste facilities to rethink how batteries are received, stored and processed.
The Environment Agency’s 2026 guidance for permitted waste-battery facilities sets out measures including pre-acceptance checks, segregation of damaged batteries, dedicated quarantine areas and fire-resistant containers.
Larger damaged lithium-ion battery packs, including those from EVs and battery energy storage systems, may require dedicated fire-resistant and ventilated enclosures with appropriate detection and suppression systems.
The guidance also highlights the importance of early detection. Depending on the facility, this can include smoke, heat, thermal or gas detection systems.
The objective is not simply to respond faster once flames appear. It is to identify a battery becoming unstable early enough to prevent a small failure from becoming a major waste fire.
Better recycling starts before the recycling plant
There is an important distinction between recycling batteries and putting batteries into a recycling bin.
Lithium-ion batteries are valuable sources of materials including lithium, cobalt, nickel and manganese. Proper recycling can recover some of these materials and reduce the need for new extraction. But the battery needs to reach a facility equipped to handle it safely.
Putting a battery into ordinary household recycling can instead introduce a fire risk into a system designed for materials such as paper, glass, plastics and metals.
That means tackling the problem requires intervention much earlier in the chain.
Consumers need clear disposal routes.
Retailers and manufacturers have a role in collecting unwanted batteries. Waste operators need appropriate infrastructure and training. And regulators need systems that account for the rapidly growing number of battery-powered products entering the market.
A growing challenge across the battery supply chain
The waste industry is not facing this problem in isolation.
A 2026 analysis by the US National Institute of Standards and Technology (NIST) found that lithium-ion battery fires are a growing issue across the wider supply chain, from production and warehousing to shipping, waste disposal and consumer use.
The researchers also warned that existing data is fragmented, meaning the scale of the problem may be underestimated.
That matters because the number of batteries reaching the end of their first life is only likely to increase.
The transition towards electrification is putting more lithium-ion batteries into circulation, from small consumer electronics to electric vehicles and large stationary energy-storage systems.
Eventually, all of those batteries have to go somewhere. The question is whether the infrastructure handling them will be ready.
Turning a fire risk into a recycling opportunity
The solution is not to discourage the use of lithium-ion batteries. Their role in electrification, transport and energy storage is too important.
Instead, the industry needs to build a safer system around them.
That means designing batteries and products with eventual dismantling and recycling in mind, improving identification and collection systems, separating damaged batteries before they enter processing equipment, and equipping waste facilities with detection systems that can identify problems before flames spread.
It also means making correct disposal easier for consumers.
A battery that reaches an appropriate recycling facility can be a source of valuable materials. The same battery thrown into general waste can become an ignition source.
As the number of lithium-ion batteries in circulation grows, that distinction will become increasingly important.
The lithium-ion battery fire challenge does not end when a device reaches the end of its useful life. In many cases, that is where a new risk begins.
And for the waste and recycling industry, the next major battery fire may not begin with an electric vehicle or a battery-storage facility. It could be hiding inside an ordinary bag of rubbish.
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