How many power banks can I take on a flight from Korea?

Since April 20, 2026, you can carry at most two power banks per person in the cabin, each 160Wh (about 43,000mAh) or less. Power banks over 100Wh and up to 160Wh need airline approval at the check-in counter.

Can I charge my phone with a power bank on a Korean flight?

No. Under Korea's transport ministry rules, you may not charge a power bank on board or use a power bank to charge a smartphone or any other device. You can only carry it.

Can I put a power bank in my checked luggage in Korea?

No. Power banks of any capacity cannot go in checked baggage and must travel with you in the cabin. On board, keep them on you or in the seat pocket rather than the overhead bin, and cover the terminals with insulating tape or put each one in its own plastic bag or pouch.

How many Wh is a 20,000mAh power bank?

At the standard lithium-ion rating of 3.7V, 20,000mAh × 3.7V ÷ 1,000 = 74Wh. That's under 100Wh, so you can carry it without airline approval. If the Wh figure is printed on the power bank, go by that number first.

Power Bank Rules on Flights From Korea (2026)

The short answer

Since April 20, 2026, flights departing Korea allow two power banks per person, each 160Wh or less (over 100Wh needs airline approval)
On board, no charging the power bank and no charging your phone from it. You can carry it, nothing more
Never in checked bags. In the cabin, keep it on you or in the seat pocket, not the overhead bin, with the terminals taped or bagged
Cordless hair straighteners with built-in batteries are banned in both carry-on and checked bags on Korean Air, Jeju Air and others

There’s a scene that plays out at Korean airport security every single day. A bag goes through the X-ray, comes back, and an officer starts pulling out power banks and counting them. Since the Air Busan fire at Gimhae Airport in January 2025, Korea has tightened its power bank rules several times, and since April 2026 it has gone a step beyond the international baseline. Pack from memory of a trip a few months back and you might be leaving a battery in the bin at the airport.

This guide covers the power bank rules for flights departing Korea as of October 2026, based on official notices from the transport ministry, airports and airlines. It also covers how the rules change at your next stop.

What are the power bank rules on flights from Korea?

Two per person, up to 160Wh each, no use on board, and never in checked bags. From April 20, 2026, Korea’s Ministry of Land, Infrastructure and Transport (MOLIT) limited cabin power banks to two per person and fully banned charging a power bank on board or using one to charge any other device. Before that, you could carry up to five as long as each was 100Wh or less.

🔋 Power bank rules on flights departing Korea (in force since April 20, 2026)

Item	Rule	Source
Quantity	Up to 2 per person	MOLIT
Capacity	160Wh or less each. Over 100Wh up to 160Wh needs airline approval	MOLIT (160Wh cap), Incheon Airport, Korean Air, Jeju Air (approval rule)
Over 160Wh	Not allowed	Incheon Airport
Checked baggage	Not allowed at any capacity	Korea Airports Corporation, airlines
In-flight use	No charging the power bank, no charging devices from it	MOLIT
Where to keep it	On you or in the seat pocket (some airlines also allow under the seat in front). Never in the overhead bin	Airline notices (Air Premia, Jeju Air and others)
Terminals	Prevent short circuits with insulating tape, an individual plastic bag or pouch, or terminal caps	MOLIT, Korean Air, Jeju Air
Unlabeled power banks	If no voltage (V) is shown, capacity can’t be confirmed and carriage may be refused	Korean Air

What counts toward the two

The two-per-person limit covers all sizes combined. Two small ones plus one large one is three, and that's one too many.
Wireless charging power banks are power banks too. IATA recommends switching them off and keeping them away from your phone on board.
Spare batteries for cameras and drones are counted separately from power banks. Korean Air allows up to five per person and asks you to get counter approval for six or more.
If your airline's rule is stricter, the airline's rule applies. Flying a foreign carrier? Check its notice too.

How do I know how many Wh my power bank is?

Multiply the mAh on your power bank by its voltage (usually 3.7V), then divide by 1,000. MOLIT and Jeju Air both convert 100Wh to roughly 27,000mAh and 160Wh to roughly 43,000mAh.

🧮 mAh to Wh (at 3.7V; Wh = mAh × V ÷ 1,000)

Labeled capacity	Calculation	Wh	On flights from Korea
5,000mAh	5,000 × 3.7 ÷ 1,000	18.5Wh	Allowed, no approval
10,000mAh	10,000 × 3.7 ÷ 1,000	37Wh	Allowed, no approval
20,000mAh	20,000 × 3.7 ÷ 1,000	74Wh	Allowed, no approval
27,000mAh	27,000 × 3.7 ÷ 1,000	99.9Wh	Allowed, no approval
30,000mAh	30,000 × 3.7 ÷ 1,000	111Wh	Airline approval needed
43,000mAh	43,000 × 3.7 ÷ 1,000	159.1Wh	Airline approval needed
50,000mAh	50,000 × 3.7 ÷ 1,000	185Wh	Not allowed

If the label shows Wh, trust that number

Some news articles round 100Wh down to "about 20,000mAh," but at 3.7V the correct figure is about 27,000mAh. Some products also list mAh at the output voltage (5V, for example) rather than the cell voltage, so a Wh figure printed on the power bank itself is the most reliable. IATA notes that if staff can't verify the Wh rating, the airline may refuse to carry it. If the label has worn off or was never there, leave that power bank at home.

Why are Korea’s power bank rules so strict?

It started on the night of January 28, 2025, at Gimhae Airport in Busan. A fire broke out in the cabin of Air Busan Flight 391 as it prepared to leave for Hong Kong, and passengers and crew evacuated. According to the Electronic Times, Korea’s Aviation and Railway Accident Investigation Board said in March 2025 that the fire began near the overhead bin above row 30 on the left side and was most likely caused by internal insulation failure in a power bank. For the wider story of Korean aviation safety and what this accident changed, see our history of Korean airline accidents.

📅 How Korea's power bank rules changed

When	What changed
January 28, 2025	Cabin fire on Air Busan at Gimhae Airport
March 1, 2025	MOLIT measures take effect: no power banks or e-cigarettes in overhead bins, terminals insulated, no charging power banks from aircraft power (up to 5 at 100Wh or less, 2 at 100–160Wh)
September 1, 2025	Insulating tape replaces plastic bags, heat-sensitive stickers on overhead bins (turn red above 40°C), at least two fire containment bags on every aircraft
September 2025 – February 2026	Korean airlines ban in-flight use one by one. With T’way Air on February 23, 2026, all 11 Korean passenger airlines had a ban in place (Korea Economic Daily)
March 27, 2026	A standard Korea proposed is adopted by the International Civil Aviation Organization (ICAO) and applies worldwide (two per person, no charging on board)
April 20, 2026	Korea applies it in full: two per person, and no charging devices from a power bank on board

The international standard says power banks “should not” be used to charge devices on board, a recommendation. Korea turned it into an outright ban, so flights from Korea sit one notch stricter than the global baseline.

Maximum power banks per person (since April 20, 2026)

160Wh

Maximum capacity per power bank (about 43,000mAh)

Korean passenger airlines banning in-flight use (as of Feb 2026, Korea Economic Daily)

40°C

Temperature at which overhead-bin stickers turn red

Incidents didn’t stop after the rules got tougher. According to the Financial News, on July 20, 2026, a passenger’s power bank started smoking just after takeoff on a T’way Air flight from Incheon to Boracay, and the crew put it out. According to the Korea Economic Daily and New Daily, on September 24 an Air Seoul jet about to leave Incheon for Da Nang had a suspected power bank fire before takeoff, in a bag under a seat. Investigators reportedly believe it caught fire even though short-circuit protection had been applied. New Daily reported that the airline industry is weighing further restrictions.

What happens if security finds a power bank that breaks the rules?

Expect to give it up on the spot, and don’t expect to get it back. Incheon Airport says that if a checked bag contains prohibited items, additional security checks may follow or the items may be confiscated, and that items passengers give up are not returned but donated to welfare organizations. Korea Airports Corporation likewise says that if security finds a prohibited item, you’ll have to give it up or repack and go through screening again, which can delay your departure.

More than 1,000 a day. According to figures obtained by lawmaker Lee Yong-sun's office from Korea Airports Corporation and Incheon International Airport Corporation, as reported by the Gangwon Domin Ilbo, security screening caught 267,983 power banks that broke the rules or lacked approval between January and August 2026. The total since March 2025 is 608,370.

According to Chosun Biz and Hansbiz, the current Aviation Safety Act has no provision for punishing passengers who break these rules. The same reports say MOLIT is considering an amendment that would fine passengers, for example those who put power banks in checked bags, and that a draft was being written as of July 2026. No start date has been set.

Five-minute check before you leave for the airport

Cut down to two power banks or fewer. Leave the extras at your accommodation or split them with a travel companion
Make sure the Wh, or the mAh and V, is visible on each one
Tape the terminals or put each one in its own zip bag or pouch
Move every power bank, spare battery and e-cigarette out of your checked suitcase and into your carry-on
Have a cordless straightener or iron with a built-in battery? Recheck your airline's rules
Once on board, keep power banks on you or in the seat pocket, not the overhead bin. If one gets hot or swells, tell the crew right away

Need a little time to repack on the way to the airport? See our half day in Hongdae before your flight and our Incheon Airport transport comparison. For using chargers and adapters while you’re here, see our Korea plug and voltage guide.

What else with a battery should I watch out for?

Power banks aren’t the only things with lithium batteries. Here are the items that most often get caught at the end of a shopping-heavy trip.

Item	Rule on flights from Korea	Source
E-cigarettes	Carry-on only, not checked. No use or charging on board, not in the overhead bin	Incheon Airport, Korean Air
Spare camera and drone batteries	100Wh or less: up to 5 per person (6 or more need counter approval). 100–160Wh: 2 (approval). Carry-on	Korean Air, Jeju Air
Cordless straighteners and irons with built-in batteries	Not allowed in carry-on or checked bags	Korean Air, Jeju Air
Cordless straighteners with removable batteries	Carry-on only, after airline approval	Korean Air
Smart luggage	Remove the battery and carry it on if it’s removable. If not, the bag can’t be carried	IATA, Jeju Air
Laptops, phones and other devices	Best kept in the cabin. If your bag is sent to the hold at the gate, take out batteries and devices first	IATA

The battery hiding in your K-beauty haul

According to the Herald Economy, in January 2026 a foreign passenger at Incheon Airport had to throw away a cordless straightener with a built-in battery worth about ₩500,000. Beauty gadgets, handheld fans and rechargeable hand warmers bought in Korea can also contain lithium batteries, so check before you fly. For prohibited items in general, see our guide to what you can and can't bring in or out of Korea.

Are the rules different at my next destination?

Most of Asia has moved to two per person in 2026, but the details and start dates vary. On the flight home or onward, the rules of that country and that airline apply.

🌏 Power bank rules at key destinations and airlines (checked October 2026)

Departure point or airline	Main rules	Effective
Japan (MLIT)	2 per person (160Wh or less). No charging power banks or other devices from them on board	April 24, 2026
Hong Kong (Civil Aviation Department)	2 per person departing Hong Kong, no charging on board. Cathay Pacific bans use and recharging at any time in flight	March 28, 2026
Singapore (CAAS)	2 per person departing Singapore, extras must be discarded. Singapore Airlines bans charging and use on board	April 15, 2026
Taiwan	2 per person departing Taiwan’s airports, no charging devices on board (Focus Taiwan)	March 31 – April 1, 2026
Vietnam (Civil Aviation Authority)	2 per person, no charging on board (LuatVietnam)	July 1, 2026
Mainland China domestic flights	No power banks without a clear 3C certification mark, and no recalled models (Guangming Online)	June 28, 2025
Thai Airways	No power bank use on board	March 15, 2025
Emirates	No use on board, one power bank under 100Wh only (Gulf News, October 2025; check Emirates’ notice before flying for any later changes)	October 1, 2025

Connecting through China?

International flights from Korea to China follow Korea's rules, but if you connect to a domestic flight inside China, the 3C mark must be printed on the power bank itself. If you bought your power bank in Korea, check for the 3C mark before you go.

Will the rules change again in 2027?

Big power banks over 100Wh may get harder to fly with from next year. IATA has said its 68th edition of the Dangerous Goods Regulations, effective January 1, 2027, will not include the provision allowing power banks over 100Wh and up to 160Wh with airline approval, and its passenger guidance already marks that range as “Forbidden.” How Korea’s government and airlines will apply this hasn’t been confirmed yet. If you’re buying a new high-capacity power bank, 100Wh (about 27,000mAh) or less is the safe choice going forward.

Sources