Merseyside fire service identifies lithium-ion battery as cause of Bootle blaze that killed four

Merseyside Fire and Rescue Service says an electrical event sent a lithium-ion battery into thermal runaway, causing the Bootle house fire that killed Elisha Brabin and her three children on 22 September. The finding identifies the source of the blaze, but the service has not said what the battery powered. That distinction matters because lithium-ion batteries are used in many products; investigators have not identified any particular device in this home.

The victims were Elisha Brabin, 36, and her children Leo, 16, Ellis, eight, and Prudence, seven. Firefighters found all four in an upstairs bedroom. A fifth person was outside when emergency services arrived and was taken to hospital with burns, according to The Independent’s account of the fire service statement.

What investigators found

The fire service said its investigation found that an electrical event caused the battery to enter thermal runaway. In that process, a battery produces heat faster than it can release it, and its temperature rises rapidly. The available accounts do not describe a more specific electrical fault, the battery’s history or what product it was part of. The finding therefore does not establish that an e-bike, e-scooter or vape caused this fire, even though those products can contain lithium-ion batteries.

Crews reached the house at about 3.45am on 22 September and found it alight, The Guardian reported. At the height of the response, six fire crews were at the scene. Kev Johnson, the fire service’s head of prevention, said crews and ambulance colleagues had tried to achieve a different outcome, but the speed and intensity of the fire defeated those efforts, according to The Independent.

The family and the wider risk

In a tribute reported by both newspapers, the family described Elisha as a devoted and loving mother who lived for her children. They said Leo, Ellis and Prudence had brought joy and laughter to their lives, and that the loss of Elisha and the children had left them heartbroken. Their statement conveys the immediate cost of the fire while the technical finding addresses how it began.

Johnson also urged people to stop using a battery if it swells, makes unusual sounds, has a strong smell, fails to charge or begins smoking. Those are warning signs the fire service gave for batteries generally. Its advice does not imply that any of those signs had been observed before the Bootle fire; the reporting available so far does not establish the battery’s condition before the electrical event.

Government figures give context for the risk, though they concern a narrower set of products than lithium-ion batteries as a whole. The Office for Product Safety and Standards received notifications of 211 UK fires involving e-bikes or e-scooters in 2024. Of those reports, 170 involved e-bikes, including 77 confirmed conversions to electric power after manufacture, and 39 involved e-scooters. The figures do not identify the product involved in Bootle.

The locations in those notifications also show why battery fires are a concern inside homes. The regulator recorded 45 incidents in single-occupancy houses and 38 in purpose-built flats or maisonettes. It said 82 of the 211 fires were confirmed to have occurred while the product was charging, 80 while it was not charging, and the charging status of 49 was unknown. No charging status has been established in the available accounts of the Bootle fire.

The regulator cautions against treating its 2024 total as a count of every such fire in the UK. Fire services submit product-related notifications voluntarily, and reporting coverage has expanded over time. The data therefore cannot establish a national incident total or a trend in the underlying rate of fires. Most of the 2024 notifications—175 of 211—came from London Fire Brigade, another reason to read the geographic breakdown with care.

For the Bootle family, the fire service’s finding answers the central question of what started the blaze: a lithium-ion battery entered thermal runaway after an electrical event. It leaves narrower questions unanswered, including the battery’s use and the specific failure behind that event. The service’s published safety message is to use manufacturer-approved batteries and chargers and to stop using a battery that shows signs of failure.