Merseyside Fire and Rescue Service attributed the blaze to a lithium-ion battery entering thermal runaway, but the battery’s specific use has not been confirmed.
The supplied Press Association report says a Merseyside Fire and Rescue Service investigation identified a lithium-ion battery entering thermal runaway after an electrical event as the source of the Bootle house fire that killed Elisha Brabin and her three children. The battery’s specific use and the precise electrical fault remain unconfirmed in the available evidence.
- Section
- Science & Technology
- Format
- ANALYSIS
- Published
- Sep 28, 2026, 05:19 PM
## Verified facts
The supplied Press Association report says Elisha Brabin, 36, and her children Leo Brabin, 16, Ellis Brabin, eight, and Prudence Brabin, seven, died in a house fire at Stone Square in Bootle, Merseyside, in the early hours of 22 September. A fifth person was taken to hospital with burns.
According to a Merseyside Fire and Rescue Service (MFRS) spokesman, an investigation found that an electrical event caused a lithium-ion battery to enter thermal runaway. MFRS defines thermal runaway as a condition in which a battery produces more heat than it can safely release, causing its temperature to rise rapidly and uncontrollably. MFRS said the battery was confirmed as the source of the fire.
The report states that the fire service has not confirmed what the battery was being used for. It notes that such batteries are commonly found in e-bikes and e-scooters, but does not establish that this battery was from either type of vehicle. MFRS also reported 150 lithium-ion-battery-linked fires in Merseyside between April 2023 and August 2026, including five fatalities linked to the batteries.
## Interpretation
The evidence supports the conclusion that the battery was identified by the fire service’s investigation as the source of ignition, rather than merely being present at the scene. The reported mechanism—an electrical event followed by thermal runaway—offers a technical explanation for how the fire began, although the supplied report does not provide further details about the electrical fault or the battery itself.
MFRS’s safety advice focuses on using manufacturer-supplied or approved batteries and chargers and stopping use if a battery swells, makes unusual sounds, develops a strong smell, fails to charge or emits smoke. This advice is presented by the fire service as a response to the risks identified in the incident; the evidence does not show that any particular warning sign was observed in this case.
## Uncertainty and limits
The supplied evidence does not identify the battery’s device, manufacturer, age, condition or charging circumstances. It also does not provide the full investigation report, so the precise electrical event and the sequence leading to the deaths cannot be independently assessed from the available material. The report records that a fifth casualty suffered burns but gives no outcome for that person.