Beijing, October 15, 2024 – A fire broke out in the early hours of October 6 in a residential complex in Beijing, trapping four family members, including an elderly man, his wife, daughter, and granddaughter. The fire was quickly brought under control by the Beijing Fire Department, and all four family members were rescued without significant injuries.
According to an official statement from the Beijing Fire Department, the fire was caused by thermal runaway of a lithium battery that had been stored in the living room of the elderly resident’s home. The battery ignited nearby combustible materials, such as a sofa, which rapidly escalated the situation.
The Cause: Neglected Lithium Battery
The resident, referred to as Mr. Bai, had previously owned an electric tricycle, for which he had purchased a new 48V lithium battery in 2023 as a backup. When his electric tricycle was no longer in use, he decided to keep the unused battery in his living room.
“This battery has been sitting in our living room for a long time, and I hadn’t charged it in ages,” Mr. Bai said in a statement. “It didn’t seem to be in the way, so I didn’t think it could cause a fire.”
Unfortunately, the stored lithium battery experienced what is known as “thermal runaway,” a failure mode in which the battery overheats and triggers a chemical reaction that can lead to ignition. Lithium-ion batteries, while generally safe when used properly, can pose significant risks if stored improperly or left unmonitored for long periods, as in this case.
Repeated Warnings Ignored
This fire could have been avoided, according to local officials. In the months leading up to the incident, staff from the community’s property management company, neighborhood committee, and local street office had made multiple visits to Mr. Bai’s home to advise him against storing the lithium battery indoors.
“We came to his house seven or eight times, urging him to remove the battery,” a neighborhood committee representative said. “The neighbors were constantly concerned, and many had filed complaints. But Mr. Bai refused to part with the battery, insisting it wouldn’t cause a fire in his home.”
Despite the clear warnings and concerns from his neighbors, Mr. Bai remained unconvinced of the potential danger. His reluctance to dispose of the battery eventually led to the early morning fire, which could have had far worse consequences had the fire department not responded so quickly.
Community Fire Safety Concerns
This incident has sparked renewed discussions in Beijing about fire safety, especially regarding the storage and disposal of lithium-ion batteries, which are increasingly common in households due to the rising popularity of electric vehicles and devices. Experts warn that improper storage of such batteries, particularly in indoor environments, can increase the risk of thermal runaway and fire.
As the investigation continues, local authorities are working to determine any further responsibility for the fire. The property management company, community staff, and local government are also considering additional measures to prevent similar incidents, such as enhanced fire safety education and stricter guidelines for battery storage in residential areas.
What is Thermal Runaway?
Thermal runaway is a chain reaction in lithium-ion batteries that occurs when the heat generated inside the battery increases faster than it can be dissipated. This can lead to the failure of the battery, resulting in venting, smoke, fire, and even explosion in severe cases. Common causes of thermal runaway include overcharging, physical damage to the battery, internal short circuits, and prolonged exposure to heat.
In Mr. Bai’s case, the battery had been sitting unused for an extended period, and it is likely that the lack of maintenance and improper storage conditions contributed to the thermal runaway.
Importance of Lithium Battery Safety
This fire serves as a stark reminder of the importance of proper lithium battery storage and handling. As lithium-ion batteries become more common in everyday household items, from smartphones to electric bicycles and power tools, so do the risks associated with their misuse. Fire departments and safety experts urge the public to follow best practices, including:
- Avoiding the storage of lithium batteries in high-temperature environments or in direct sunlight.
- Ensuring that batteries are not left uncharged or unused for long periods.
- Regularly inspecting batteries for signs of damage or wear.
- Properly disposing of or recycling old or damaged batteries, rather than storing them at home.
Looking Ahead
As the fire investigation continues, local authorities are expected to release updated safety guidelines for residents to minimize the risk of similar incidents in the future. In the meantime, the incident has prompted discussions on the need for stricter regulation of battery storage and clearer public awareness campaigns to educate residents on the dangers posed by lithium batteries.
