If you’re a seasoned traveller, you probably have your packing routine down to a fine art—rolling your clothes just so, tucking in your toiletries, and making sure you’ve got your crossword book for the flight.
But there’s one crucial mistake that millions of people are still making, and it could put your safety—and the safety of everyone on board—at serious risk.
We’re talking about the hidden danger lurking in your luggage: lithium batteries and power banks packed in checked baggage.
Why Are Lithium Batteries So Dangerous in Checked Luggage?
Lithium batteries are in almost everything these days—phones, tablets, laptops, cameras, hearing aids, and those handy power banks we all rely on to keep our devices charged.
But what many travellers don’t realise is that these batteries can pose a deadly threat if not packed correctly.
The UK’s Civil Aviation Authority (CAA) has sounded the alarm, warning that incorrectly packed lithium batteries could cause a fire in the cargo hold—a fire that may be impossible to contain mid-flight.
In fact, lithium battery incidents are now happening about twice a week on flights around the world.
The Shocking Numbers
According to the CAA, more than 100 million batteries have been incorrectly packed by passengers. That’s a staggering figure, based on the average traveller carrying four battery-powered devices and a significant number of people simply not knowing the rules.
Even more concerning, reports of overheating or malfunctioning passenger devices nearly doubled between 2024 and 2025. Yet, over a third of travellers (36 per cent) are still unaware of the dangers of packing batteries in their checked bags.
What Are the Rules?
The rules are clear: power banks, spare lithium batteries, and vapes must be carried with you in the cabin—not in your checked luggage. If you pack them incorrectly, you risk not only delays and having your bag removed from the flight, but also the possibility of a catastrophic in-flight fire.
Airlines are tightening their policies, too. American Airlines, for example, now limits passengers to a maximum of two power banks, and you must keep them in plain sight when in use. Some airlines have banned the use of power banks for charging altogether while on board.
Why the Cabin Is Safer
You might wonder why it matters where you pack your batteries. The answer is simple: if a battery overheats or catches fire in the cabin, the crew can respond quickly with fire extinguishers and other safety equipment. But if it happens in the cargo hold, it could go unnoticed until it’s too late.
What Should You Do?
- Always pack power banks, spare batteries, and vapes in your carry-on bag.
- Check your airline’s specific rules before you fly.
- Some have stricter limits than others.
- Don’t use power banks to charge devices unless the airline allows it.
- If you notice a device getting hot, alert the cabin crew immediately.
Other Packing Tips for Safe Travels
While we’re on the topic of safe packing, here are a few more tips to keep your journey smooth and stress-free:
- Keep medications and important documents in your carry-on.
- Use a checklist to make sure you haven’t forgotten anything important.
- Label your devices and chargers to avoid mix-ups at security.
- Consider a fireproof pouch for your batteries and power banks for extra peace of mind.
Key Takeaways
- Millions of travellers are still incorrectly packing power banks and lithium batteries in their checked luggage, risking in-flight fires that may be impossible to control.
- Airlines are tightening restrictions, with some now limiting passengers to a maximum of two power bank devices and requiring them to be kept in plain sight during use, while others have banned charging on board entirely.
- Incidents involving overheating or malfunctioning lithium batteries on passenger flights have nearly doubled between 2024 and 2025, yet over a third of travellers remain unaware of the dangers.
- Aviation authorities warn that incorrectly packed batteries could not only cause flight delays but also lead to passengers’ bags being offloaded, or, in the worst case, a potentially deadly fire on board.
We’d love to hear from you! Have you ever had a device overheat while travelling? Did you know about the rules for packing batteries and power banks? Share your experiences and tips in the comments below—your story could help keep a fellow traveller safe.
Safe travels, everyone! And remember: a little knowledge goes a long way when it comes to protecting yourself and others in the skies.
