Firefighters across the UK are responding to lithium-ion battery fires at a rate of one every five hours, according to new data, as fire chiefs warn that public awareness and government regulation have failed to keep pace with the growing hazard.
Rising Incidents
Data gathered by global insurer QBE through freedom of information requests reveals that fire brigades were called to 1,760 fires linked to lithium-ion batteries in 2025, equivalent to 4.8 fires per day. This represents a 147% increase over the past three years.
Electric vehicle fires rose by 133% during the same period, while the number of electric vehicles on UK roads tripled. Ebike fires accounted for nearly a third of all lithium-ion battery fires nationally, with 520 callouts in 2025 compared to 149 in 2022.
London and Glasgow Incidents
London Fire Brigade (LFB) tackled 44% of ebike fires, with 230 incidents in the capital last year and five related fatalities in the past three years. LFB Deputy Commissioner for Prevention Spencer Sutcliff said the brigade remains "extremely concerned" about ebike and e-scooter fires, stressing the importance of public awareness.
A blaze that devastated a historic building in Glasgow and forced the two-week closure of Central station is believed to have started in a vape shop, where lithium-ion batteries are common.
Thermal Runaway Hazard
Improper use or damage to these batteries can trigger thermal runaway, a dangerous chain reaction causing uncontrollable temperature rise, toxic gas venting, and explosions. Nearly half (46%) of all lithium-ion fires occurred in homes.
Incorrect disposal—these batteries should not go in general waste but can be recycled at supermarket bins—has led to serious fires in bin lorries and recycling plants, costing over £1 billion annually and causing injuries.
Expert Warnings
Adrian Simmonds, risk manager at QBE Insurance, urged individuals and businesses to manage the growing risk. "Thermal runaway burns differently, takes longer to tackle, and can require up to 10 times more water to contain," he said. "People should use only certified ebikes and batteries, charge them away from escape routes, and avoid charging overnight."
A National Fire Chiefs Council (NFCC) spokesperson said the findings reflect real-world experiences. "We are especially concerned about fires involving poorly manufactured, modified, or converted ebikes, which account for a disproportionate number of incidents," the spokesperson added. "Stronger action is needed to ensure industry responsibility for product safety."
The Fire Brigades Union called for investment in training and equipment to address emerging risks, particularly toxic gases from lithium-ion battery fires that pose long-term health hazards.
