Power Bank on a Plane: Why Airlines are Tightening Lithium Battery Rules After the BA271 Incident

Lithium batteries are once again in the spotlight of aviation security: after reports of a mobile phone catching fire on British Airways flight BA271 from London to Las Vegas, passengers should more carefully check how they transport power banks, charging cases, spare batteries, and electronics. The main rule remains simple: spare lithium batteries and portable charging devices must not be placed in checked baggage; they must be in the cabin and accessible to the crew.

On June 15, 2026, on a British Airways flight from London Heathrow to Harry Reid International Airport in Las Vegas, the crew reported a mobile phone fire in the cabin. According to CBS News, the US Federal Aviation Administration confirmed that flight BA271 landed safely in Las Vegas after reports of an onboard fire, and the regulator stated it would investigate the incident. Las Vegas airport confirmed the emergency alert, while a British Airways representative stated that the aircraft arrived on schedule and no emergency situation was officially declared.

For tourists, this story is important not because air travel has become dangerous. On the contrary, such incidents remain rare, and crews are trained to handle smoke, overheating, and battery fires. But it serves as a reminder of a practical risk that many travelers underestimate: dozens of batteries fly in suitcases, backpacks, and pockets today — phones, laptops, headphones, cameras, e-books, children's gadgets, power banks, charging cases, and batteries for photo equipment.

What Exactly Happened and Why It Should Not Be Ignored

According to CBS News, the BA271 crew reported a mobile phone fire before landing in Las Vegas. In a recording of communications with dispatchers, the pilot described cabin damage from the fire but also reported that the situation was under control. The type of device that caught fire was not specified at the time of publication.

The fact that the plane landed safely does not resolve the issue for passengers. Lithium-ion batteries can overheat due to damage, short circuits, manufacturing defects, improper packaging, contact with metal objects, or excessive load. The FAA explains that all lithium batteries are theoretically capable of entering a state of thermal runaway — uncontrolled overheating that can be accompanied by smoke or flames. This is why transportation rules are built not around passenger convenience, but around crew access to the problematic device.

If a battery is in the cabin, flight attendants can quickly spot smoke, isolate the device, use fire-fighting equipment, and control the situation. If the same device overheats in the cargo hold inside a checked suitcase, the crew has no immediate physical access to the source of the problem. This difference explains the strict ban on transporting spare lithium batteries in checked baggage.

The Main Rule: Power Banks Only in Carry-on Luggage

The FAA explicitly states: spare lithium-ion and lithium-metal batteries, including power banks, phone charging cases, and external batteries, must be carried only in carry-on luggage. If a suitcase or backpack is taken at the gate and sent to the cargo hold, the passenger must remove all spare batteries and power banks and keep them with them in the cabin.

This is especially important in summer, when flights are full, overhead bin space is limited, and some carry-on luggage may be requested to be checked before boarding. Tourists often think that if a backpack was formally carry-on luggage, they can leave everything as is. In reality, after such luggage is handed over to the airline, it is no longer in the cabin, meaning spare batteries must be removed.

A practical rule for the traveler is simple: power banks, spare camera batteries, charging cases with built-in batteries, electronic cigarettes, and other similar devices should be kept where they can be quickly retrieved. Do not hide them at the bottom of a suitcase, surround them with metal objects, or place them next to keys, coins, or cables without contact protection.

How Many Watt-Hours are Allowed and Why You Should Read the Labeling

For most ordinary tourist devices, a limit of 100 Wh per lithium-ion battery applies. The FAA notes that this limit covers almost all typical batteries used by passengers in phones, tablets, laptops, cameras, or small power banks. IATA also explains that batteries up to 100 Wh are generally permitted in carry-on luggage, while devices in the 100-160 Wh range may require airline approval.

For larger spare lithium-ion batteries, the FAA sets a separate limit: with airline permission, a passenger may carry up to two spare batteries in the range over 100 Wh and up to 160 Wh. This is not a typical situation for an average tourist with a phone, but it may apply to photographers, videographers, passengers with professional audio or video equipment, drones, or large battery stations.

The problem is that many power banks on the market are labeled in milliampere-hours rather than watt-hours. If there is no clear Wh indicator on the case, it is harder for the passenger to prove the device complies with the rules. The FAA advises relying on the battery labeling, and if necessary, calculating Wh using the formula: voltage in volts multiplied by capacity in ampere-hours. For travel, it is better to take a power bank with clear factory labeling, no case damage, and no signs of swelling.

Why Rules May Differ by Airline

An important nuance: basic FAA or IATA rules do not mean that every airline will allow the same number of power banks or the same method of storage in the cabin. The FAA explicitly warns that domestic and international carriers may have stricter restrictions regarding the number of portable charging devices, their capacity, and storage location. Therefore, there is no universal answer of "you can take as many as you want up to 100 Wh" for all flights.

In 2026, some airlines are already reviewing rules for power banks: some limit the number of devices per passenger, others prohibit charging power banks from onboard outlets or storing them in overhead bins during the flight. Such an approach is not always a formal "new global ban," but for the passenger, the difference is practically important: if a rule was set by a specific carrier, it must be followed on that flight.

Therefore, before flying, it is worth checking not only the general rule of the airport or country but also the specific airline's page on dangerous goods, batteries, or restricted items. This is especially true for routes with transfers, where the first segment is operated by one airline and the second by a partner, and the ticket was purchased via codeshare.

What to Do if a Device Heats Up, Smokes, or Falls into the Seat

IATA advises passengers to immediately notify the crew if a phone, power bank, laptop, or other device becomes hot, swells, begins to smoke, or is damaged. Do not attempt to pour water on it yourself, move it through the cabin, or hide it in a bag. Flight attendants know how to handle battery incidents and have the appropriate procedures.

A separate risk is a phone or power bank that falls between seat elements. IATA emphasizes: passengers should not move the seat themselves if the device is stuck on the side or under the mechanism. The seat may compress the battery, damage it, and trigger overheating. In such a situation, call the crew and wait for assistance.

Before the trip, inspect your devices. Do not take batteries with swelling, cracks, signs of overheating, non-original repairs, or damaged cables on a flight. If a power bank has already behaved unstably, heated up quickly during charging, or had problems with ports, it is cheaper and safer to replace it before the trip than to explain the situation at security or in the cabin.

How This Affects Tourists This Summer

For most travelers, these changes do not mean that they need to give up power banks. On the contrary, in long trips, they remain useful: helping to keep the phone charged for boarding passes, navigation, payment, translation, insurance documents, and communication with the hotel. But now they must be treated as items with transportation rules, rather than as a simple cable.

Before departure, it is worth doing a quick check: does the power bank have Wh labeling or clear specifications, does it exceed the limit, is the case undamaged, are the contacts protected, does the specific airline allow that number of devices, and will you have to check carry-on luggage at the gate. If you are flying from London Heathrow Airport or heading through Las Vegas LAS, additionally check the flight status, but battery rules apply not only to these airports — they are important for any international route.

Tourists with children, photo equipment, or multiple gadgets should distribute batteries in advance. Do not pack all charging devices in one suitcase that might be checked. Keep critically important documents, medicine, phone, and one working cable with you. If evacuation is required during the flight, a different rule applies: belongings stay in place. IATA already reminded of this in the "Save a Life, Not a Bag" campaign, and it does not contradict the battery rules: in a normal flight, a power bank must be accessible, but in an emergency evacuation, the passenger does not take luggage.

Conclusion

The incident on BA271 does not mean that passengers need to fear every phone or power bank. But it clearly shows why aviation rules regarding lithium batteries are becoming more prominent. For the traveler, the main thing is not to put spare batteries in checked baggage, check capacity and labeling, protect contacts, not take damaged devices, and read the rules of your airline before the flight.

In 2026, airlines, regulators, and airports are increasingly reminding passengers of simple actions that affect the safety of the entire cabin. A power bank can remain a useful companion on the road, but only when it is properly packed, undamaged, and carried where the crew can quickly react to a problem.