Aviation authorities are issuing a stark warning to holidaymakers as the summer travel season commences, highlighting a near doubling of incidents involving lithium battery devices in hold luggage. The Civil Aviation Authority (CAA) has identified the fire risk posed by these batteries as the number one safety concern for aircraft, prompting renewed calls for passengers to adhere strictly to safety regulations, particularly as school summer holidays begin in parts of the UK, starting with Scotland this week.
The urgency of this warning is underscored by recent data from UK authorities. In 2024, 316 incidents were recorded where devices containing lithium batteries were detected in hold bags. This figure surged dramatically to 643 in 2025, representing an increase of over 100% in a single year. Concurrently, reports of devices overheating or malfunctioning also saw a significant rise during the same period, climbing from 123 to 206. These statistics paint a clear picture of an escalating risk profile within the aviation sector.
Lithium batteries, ubiquitous in modern electronics such as mobile phones, laptops, vapes, power banks, and smart watches, are capable of storing substantial amounts of energy in a compact form. The CAA notes that the average person now carries four different lithium-powered devices on a flight. While incredibly useful and versatile, their inherent properties mean that a defect or overheating can rapidly escalate into a severe fire, which is notoriously difficult to extinguish. The CAA estimates that approximately two lithium battery incidents now occur each week across the aviation network, posing a consistent threat to operational continuity and safety.
The primary concern for regulators and airlines is the potential for such incidents within the aircraft’s hold, where detection and intervention are severely limited. While most reported issues of overheating or malfunctioning devices have occurred in the cabin, allowing crew to address them promptly, a fire in the inaccessible hold could remain undiscovered until it is too late to control, posing a catastrophic risk. Beyond the immediate safety threat, these incidents carry significant operational and financial implications for airlines, frequently leading to flight delays, costly diversions, and substantial logistical challenges.
Illustrating this operational disruption, an EasyJet flight was forced to divert to Rome last month after a power bank was discovered in the hold. Furthermore, a widely circulated video from October depicted flames emanating from an overhead storage compartment on an Air China flight, reportedly caused by a lithium battery. Such events not only compromise passenger safety but also incur substantial costs for airlines through diversions, passenger re-routing, compensation claims, and potential reputational damage, impacting financial performance across the sector.
Tim Alderslade, Chief Executive of Airlines UK, acknowledged the escalating challenge posed by lithium battery incidents, attributing it to the growing number of electronic devices carried by passengers. He described the situation as a ‘growing challenge’ for the industry. “Whilst pilots and cabin crew are trained to deal with any situation the best outcome is always prevention, which starts when passengers pack their bags,” Alderslade stated, emphasizing the critical role of passenger compliance in mitigating these risks and safeguarding airline operations.
Despite ongoing awareness campaigns, the CAA believes that many passengers remain unaware of the specific regulations governing the transport of these devices. To mitigate risks and ensure safe travel, passengers are being reminded of key guidelines:
- Items such as mobile phones, vapes, and power banks must be carried on board in the cabin, where any potential issue can be immediately addressed by the crew.
- A maximum of two power banks per person is permitted on a flight, to limit the total energy stored.
- Power banks are strictly prohibited from being charged onboard an aircraft, as charging can increase the risk of overheating.
- Laptops placed in checked-in bags must be completely turned off, not just in sleep mode, to prevent accidental activation and overheating.
Giuseppe Capanna, a product safety engineer at the campaigning charity Electrical Safety First, underscored the severity of the risk. He noted that lithium batteries, while efficient for recharging devices, can cause “ferocious” fires when they malfunction, which are exceptionally difficult to extinguish. “When these products are packed in your baggage, there is no access to them. So if something goes wrong, they can cause a really devastating fire that can have real dangerous consequences,” Capanna warned, highlighting the inherent danger of inaccessible battery fires.
Capanna further highlighted that while the majority of devices with these batteries are safe, a significant proportion of problems stem from “substandard versions” often acquired through third-party sellers. He stressed the importance of ensuring that only “safe, tested products” are taken on holiday, advising consumers to exercise caution regarding the provenance and quality of their electronic devices to avoid unforeseen hazards.
As millions prepare for their summer getaways, adherence to these aviation safety protocols is not merely a matter of compliance but a crucial measure to safeguard lives and prevent significant operational disruptions. The financial and logistical repercussions of a single incident can be extensive, making proactive prevention through informed passenger behaviour paramount for the industry and travellers alike, ensuring smoother and safer journeys during peak travel periods.
