E-bike and e-scooter battery fires are now the fastest-growing fire risk in London. We examine the data, the building design implications, and how to mitigate the risk.. The Rising Threat London Fire Brigade statistics show: 150+ e bike/e scooter fires in London in 2024 (up from 116 in 2023) 3 deaths attributed to e bike battery fires in 2024 Fastest growing fire type in the UK capital Why These Fires Are Different Explosive onset — thermal runaway can cause fires to grow from ignition to room involvement in under 60 seconds Toxic gases — hydrogen fluoride, phosphorus pentafluoride Re ignition — batteries can re ignite hours or days after initial extinguishment Suppression difficulty — conventional extinguishers are often insufficient Building Design Implications Residential Buildings Ban on charging in common areas and escape routes Dedicated, ventilated charging areas on ground floor or externally Enhanced detection in common parts (thermal + smoke) Signage prohibiting battery storage in communal areas Purpose Built Solutions External charging lockers with suppression systems Dedicated charging rooms with 60 minute fire resistance Gas detection systems for battery off gassing Automatic ventilation on detection Regulatory Response The London Fire Commissioner has called for: Product safety standards for e bike batteries Ban on second hand batteries Building management guidance for charging Changes to ADB to address lithium ion risks Need guidance on lithium ion battery risks in your building? Contact us.