Power Bank Rules on Flights in 2026: ICAO Limits and Airline Bans Explained

Power bank rules on flights changed more in 2026 than any other baggage rule. A new global limit from the International Civil Aviation Organization (ICAO) took effect on 27 March 2026, and many countries and airlines now go further by banning in-flight use altogether. If you travel with a power bank, the rules on your next flight may be different from the last one.

This guide explains the baseline ICAO rule, the stricter rules in Japan, Korea, Hong Kong, Australia and elsewhere, the airlines with their own bans, and how to work out whether your charger is allowed. Every rule has been checked against airline and regulator announcements, with sources at the end.

Can You Take a Power Bank on a Plane? The Quick Answer

Yes, but only in your cabin baggage, and with limits. Under the ICAO rule you can carry up to two, each rated at 100 Wh or less without approval, or between 100 and 160 Wh with the airline’s approval. You cannot put one in checked baggage, and you cannot recharge it from the aircraft’s power supply. Many airlines also ban using it to charge your phone during the flight.

Question	Short answer
Carry-on bag?	Yes, cabin baggage only
Checked bag?	No, never
How many?	Two maximum under ICAO; some airlines allow only one
Size limit	Up to 100 Wh freely; 100–160 Wh with airline approval; over 160 Wh not allowed
Charge your phone from it in flight?	Depends on the airline and country; many now ban it
Recharge it from the seat socket?	No

The ICAO Power Bank Rule Every Airline Follows

Since 27 March 2026, ICAO’s dangerous goods rules set the minimum standard for airlines worldwide. Airlines and countries can be stricter, but not more relaxed. The rule says:

• Two units maximum per passenger, carried in cabin baggage only.
• Up to 100 Wh needs no approval; 100–160 Wh needs the airline’s approval. Anything larger is not allowed.
• No recharging on board, for example from a seat USB port or power socket.
• Passengers should not use them to charge phones or other devices in flight. This part is a recommendation, so each airline decides whether to ban it.

That last point explains why rules now differ so much between airlines. Some, such as Ryanair, still let passengers charge a phone outside taxi, take-off and landing, while many others ban it completely.

Why Airlines Are Cracking Down on Power Banks

Portable chargers contain lithium-ion cells packed with energy. If a cell is damaged, badly made or overheats, it can go into “thermal runaway”, where it heats up uncontrollably and can catch fire or release smoke. In the air, even a small fire is a serious emergency, and a battery hidden in an overhead bin may not be noticed until smoke appears.

• Air Busan, January 2025: a fire destroyed an Air Busan Airbus A321 on the ground at Busan, injuring several people. It was traced to a charger in an overhead bin and became a turning point for rules in Asia.
• Rising incident numbers: the US Federal Aviation Administration (FAA) logged 89 lithium battery incidents on flights in 2024, with portable chargers one of the most common sources after e-cigarettes.
• More devices on board: passengers now carry more phones, tablets, laptops and spare batteries than ever, which raises the chance of a faulty one on any given flight.

Keeping a power bank within reach, rather than in an overhead bin, lets passengers and crew spot a problem quickly and deal with it before it spreads.

How Big Is Your Power Bank? Wh vs mAh Explained

Airline rules use watt-hours (Wh), but most chargers advertise their capacity in milliamp-hours (mAh). To convert, multiply the mAh figure by the battery voltage (usually 3.7 V) and divide by 1,000. Many models print the Wh rating on the case, which is the figure to trust.

Capacity	Approximate Wh at 3.7 V	Allowed?
10,000 mAh	37 Wh	Yes
20,000 mAh	74 Wh	Yes
26,800 mAh	99 Wh	Yes (just under 100 Wh)
30,000 mAh	111 Wh	Only with airline approval
40,000 mAh	148 Wh	Only with airline approval
50,000 mAh	185 Wh	No

If the label is worn off or missing, security staff may refuse the item because they cannot confirm its size. Choose one with a clearly printed Wh rating, and remember that Emirates and Philippine Airlines only accept units of 100 Wh or less.

A worked example

Say your charger is labelled 25,000 mAh and 3.7 V. Multiply 25,000 by 3.7 to get 92,500, then divide by 1,000 to get 92.5 Wh. That is under 100 Wh, so you can carry it without approval on almost every airline. If the label shows a different voltage, such as 3.6 V or 3.85 V, use that figure instead.

Power Bank Rules Timeline: How We Got Here

Power bank rules have tightened step by step since early 2025. This timeline shows the key changes in order.

Date	Change
January 2025	Air Busan fire at Busan, traced to a power bank in an overhead bin
March 2025	South Korea bans power bank use on board and in overhead bins
April 2025	Hong Kong bans using or charging a power bank on board
28 May 2025	Southwest Airlines requires a power bank in use to stay visible
1 October 2025	Emirates allows one power bank under 100 Wh and bans in-flight use
December 2025	Australian airlines ban using or charging a power bank in flight
15 January 2026	Lufthansa Group bans power bank use and charging on board
27 March 2026	ICAO rule: two power banks maximum, no recharging on board
24 April 2026	Japan applies its own stricter power bank rules

Expect more changes. Japan Airlines has already said its power bank limit may fall to 100 Wh in 2027, and more airlines are likely to follow the trend towards banning in-flight use.

Countries With Stricter Power Bank Rules

Some governments have gone beyond ICAO, and their rules apply to every airline flying from or within that country.

• Japan (from 24 April 2026): no more than two units of 160 Wh or less, no charging them from seat power, and no using them to charge other devices during the flight. Japan Airlines says the limit may drop to 100 Wh from January 2027, depending on IATA changes.
• South Korea (since March 2025): all Korean airlines, including Korean Air and Jin Air, ban using or charging them on board and do not allow them in overhead bins.
• Hong Kong (since April 2025): they cannot be used or charged on board, which applies to Cathay Pacific, HK Express and Hong Kong Airlines.
• Taiwan: Taiwanese airlines such as EVA Air and China Airlines ban using and charging them in flight.
• Australia (since December 2025): airlines such as Qantas, Jetstar and Virgin Australia ban in-flight use and charging, and the chargers must stay within reach rather than in the overhead bin.
• Mainland China: chargers without a clear 3C (CCC) certification mark, or recalled models, are banned on domestic flights, and they cannot be used to charge devices on board.
• Thailand (from June 2026): Thai rules ban using them to charge devices during flights.

Country rules follow the departure airport or the airline’s home country, so a Korean airline applies Korean rules even on a flight from Europe. When in doubt, assume the stricter rule applies.

Airline Power Bank Bans: Airline by Airline

Some airlines set their own power bank rules wherever they fly. This table summarises the best-known policies.

Airline	Rule	Since
Lufthansa Group (incl. SWISS, Austrian)	No using or charging on board, except for essential medical devices	15 January 2026
Emirates	One unit under 100 Wh; no using or charging on board; not in overhead bins	1 October 2025
Singapore Airlines and Scoot	No using or charging on board	2025
Cathay Pacific	No using or charging on board (Hong Kong rule)	April 2025
Wizz Air and easyJet	No charging devices from one in any phase of flight	2026
Philippine Airlines	Only units of up to 100 Wh accepted	April 2026
Royal Brunei Airlines	May not be used at any time in flight	2026
Southwest Airlines	Must be kept visible while in use, not inside a bag	28 May 2025
Ryanair	Charging devices allowed except during taxi, take-off and landing	Current

Rules can differ between an airline and its partners on the same trip. If your journey mixes airlines, follow the strictest rule that applies to any flight on your ticket.

What About the US, UK and Europe?

In the United States, the FAA requires spare lithium batteries, including portable chargers, to travel in carry-on bags only, and it leaves in-flight use to each airline. Most US airlines still allow passengers to charge phones in flight, but Southwest asks that any charger in use stays visible.

In the UK and the European Union, the ICAO limits apply, and airlines set their own policies on use. That is why you can charge a phone on Ryanair but not on Lufthansa, SWISS, Austrian, Wizz Air or easyJet. Always check the operating airline, not just the airline you booked with, because codeshare flights follow the rules of the airline flying the aircraft.

Other Lithium Items: Laptops, E-Cigarettes and Smart Bags

The same safety concerns apply to other battery-powered items, and the rules are worth knowing before you pack.

• Phones, tablets and laptops: carry them in your cabin bag where possible. If a device goes in checked baggage, it must be switched off completely and protected from damage.
• E-cigarettes and vapes: cabin baggage only. They cannot be used or charged on board.
• Smart bags: suitcases with built-in batteries are usually only accepted if the battery can be removed. Take the battery out and carry it in the cabin if the bag is checked.
• Spare camera batteries: like chargers, they must travel in cabin baggage with the terminals protected.
• Medical devices: airlines usually make exceptions for essential medical equipment, but check with your airline in advance and carry any paperwork.

How to Pack a Power Bank for Your Flight

1. Check the Wh rating: make sure each unit is 100 Wh or less, or get approval in advance for one between 100 and 160 Wh.
2. Carry no more than two: or one if you are flying Emirates. Small chargers still count towards the limit.
3. Keep it in your cabin bag: never in checked luggage. If your cabin bag is taken at the gate, remove the charger first.
4. Keep it within reach: many airlines now want it in the seat pocket or under the seat in front, not in the overhead bin.
5. Protect the terminals: use the original case or a pouch, and keep it away from coins and keys.
6. Leave damaged units at home: a swollen, cracked or hot battery should not travel at all.

Tips for families and business travellers

Families often carry several devices for children, which makes it easy to go over the two-unit limit without noticing. Count every spare battery in every bag before you leave home, and share them out sensibly between adults’ cabin bags. For long flights with children, downloading shows to tablets in advance and choosing an airline with seat power usually works better than relying on a spare battery.

Business travellers who need a laptop for work should look for airlines and aircraft with mains sockets at every seat, and carry a compact charger with a short cable. If you connect between airlines on a single trip, check each airline’s rule separately, because the strictest one applies on that flight.

What Happens If You Break the Rules?

If your charger is too large, unlabelled or packed in checked baggage, airport security can remove it, and you are unlikely to get it back. Gate staff may also stop you boarding with it. On board, cabin crew can ask you to stop using it or move it out of an overhead bin, and passengers are required to follow crew instructions.

If a battery gets hot, swells, smokes or smells of burning during a flight, tell the cabin crew immediately. Do not try to move it into a bag or bin yourself. Crew are trained to handle lithium battery fires, and fast action is what keeps these incidents small.

How security checks your charger

At most airports, spare batteries show up clearly on the X-ray scanner, so security staff know when you are carrying one. They may ask you to take it out of your bag, show them the capacity label or explain what it is. Having the Wh rating printed clearly on the case makes this quick. If you are carrying a larger unit between 100 and 160 Wh, bring proof of the airline’s approval, such as an email or a note on your booking.

Airline staff may check again at check-in or at the gate, especially on airlines with stricter rules. If you are asked how many spare batteries you are carrying, answer honestly. It is far better to leave an extra charger with someone who is not travelling than to lose it at the airport or delay your boarding.

Smart Ways to Stay Charged on a Flight

• Charge fully before you board: top up your phone and devices in the terminal or lounge.
• Use seat power: many aircraft have USB or mains sockets at every seat, which you can use to charge your phone directly.
• Save battery: download films and music before the flight, lower your screen brightness and switch on flight mode.
• Bring the right cable: a short USB-C or Lightning cable makes seat power easy to use.
• Use your charger after landing: treat it as a backup for the airport and your onward journey.

That approach works on every airline and in every country, so you never have to worry about which rule applies. Each of our airline guides has a section with that airline’s current rules.

Power Bank Rules: Before-You-Fly Checklist

• Is every charger rated 100 Wh or less, with the rating clearly printed?
• Are you carrying two or fewer, or only one on Emirates?
• Is everything with a lithium battery in your cabin bag, not your checked bag?
• Have you checked the operating airline’s rule on in-flight use?
• Are you flying to or from Japan, Korea, Hong Kong, Taiwan, China, Thailand or Australia, where stricter rules apply?
• Is your phone fully charged before boarding?

Power Bank FAQs

Facts checked in October 2026 against Migflug on the ICAO wording, Japan Airlines’ April 2026 notice, Aviation News on airline policies, Wanderlust on the Emirates ban, Quotidiano Motori on European airline policies and CAPA on Philippine Airlines. Rules change often, so check with your airline before you fly.