The UK Government has initiated a consultation to gather public and industry input on increasing the legal power of electric bike models from 250W to 500W in the UK. This move has sparked concerns in the fire protection community.
Electric bicycles utilize various types of batteries, with lithium-ion technology being the common choice. These batteries come in different shapes and sizes, such as cylindrical or box-shaped configurations.
Battery packs in electric bikes are composed of multiple cells connected in series and parallel to provide the necessary voltage and capacity. Incidents of fires linked to lithium-ion batteries are on the rise, posing risks to users of electric bikes and e-scooters.
Recent data disclosed in May 2023 by the Guardian newspaper revealed that defective electric bikes and e-scooters have caused injuries to 190 individuals and claimed eight lives in the UK. The London Fire Brigade noted a substantial increase in battery-related fires in 2023, with a rise of 78% compared to the previous year.
Potential causes of fires in lithium-ion batteries include mechanical or thermal shock, overcharging, and reactive materials interacting with each other, leading to heat generation and abnormal electrical behavior. Despite the benefits of higher wattage batteries in electric bikes, there are concerns about the increased risk of fires and other safety issues.
To mitigate the risk of battery fires, users are advised to avoid tampering with batteries, charge them within the recommended parameters, and store them in a safe environment away from flammable materials. Adherence to manufacturer guidelines and proper disposal of damaged batteries are crucial in preventing incidents of fires.
Source: www.sciencefocus.com
