Elisha Brabin and her children Leo Brabin, Ellis Brabin and Prudence Brabin died in the fire. MFRS has not confirmed what the battery was being used for, but they are often found in e-bikes and e-scooters. Key points and original sources are listed below.

• Elisha Brabin and her children Leo Brabin, Ellis Brabin and Prudence Brabin died in the fire.S1

• MFRS has not confirmed what the battery was being used for, but they are often found in e-bikes and e-scooters.S2

• An electrical event triggered thermal runaway in a lithium-ion battery, starting the Bootle house fire that killed Elisha Brabin and her three childrenS3