Flying from Korea with a Power Bank? Read This Before You Pack

Power Bank Rules on Flights from Korea — Updated for 2026

If you're flying out of Korea, the rules around power banks have changed significantly since early 2025 — and they've kept tightening through 2026. What started as a Korean safety response has since become the new global standard. Here's what actually matters before you head to the airport.

Why the Rules Changed

It started with an Air Busan fire in January 2025, where a power bank stored in an overhead bin was identified as the likely cause. Korea's Ministry of Land, Infrastructure and Transport (MOLIT) moved quickly, introducing strict new rules in March 2025. Korea then pushed those same rules at international aviation bodies — and in March 2026, the ICAO (the UN's aviation authority) adopted them as the official global standard.

So if these rules feel stricter than what you remember from a few years ago, that's because they are — and Korea was the one leading the push.

What You Can (and Can't) Bring

How many power banks?

As of March 27, 2026, the ICAO global limit is two power banks per passenger. This is down from Korea's previous limit of five, which applied through most of 2025.

For most travelers, this isn't a problem. I personally travel with one, and honestly two is more than enough for a typical international trip.

Capacity limits

• 100Wh or under — allowed, no airline approval needed
• 100Wh to 160Wh — allowed with advance airline approval (limit: 2 total)
• Over 160Wh — not allowed at all

Most consumer power banks are well under 100Wh. A common 20,000mAh bank runs around 74Wh. You can check the Wh label on the back of your device — if it only shows mAh, multiply by 3.7 and divide by 1,000 to get the rough Wh figure.

Checked luggage

Power banks must go in your carry-on only. This is a hard rule with no exceptions. It's worth double-checking when you pack, since it's easy to toss a power bank into a suitcase out of habit.

Storing Your Power Bank at the Airport and Onboard

A few rules around how and where to keep your power bank:

Short-circuit prevention is required. You need to do at least one of the following:

• Keep each power bank in a separate pouch or zip-lock bag
• Cover the terminals with insulating tape (distributed at check-in counters and boarding gates in Korea)
• Use a plastic cap over the connectors

No overhead bins.Once you're on the plane, power banks cannot go in the overhead compartment. Keep them in the seat pocket in front of you or in a bag under the seat — somewhere visible and within reach.

In-Flight Use Is Now Banned

• You cannot charge your phone, tablet, or laptop from a power bank while in the air
• You cannot plug your power bank into the plane's USB port to recharge it
• The power bank just has to sit there, unused, for the duration of the flight

This applies from the moment you board until you land.

What to Use Instead

Most modern aircraft have USB-A ports at the seat, and some have full 110V or 220V outlets depending on the airline and cabin class. Check which cable type you need before you fly — if you only have a USB-C to USB-C cable, a small USB-A to USB-C adapter is worth packing.

If you're on a long-haul flight or have a layover, this matters more than you'd think. Especially now that paper boarding passes are increasingly rare — many travelers use a QR code on their phone to board, and if you're connecting through multiple airports, a dead phone at the wrong moment can cause real problems. I always make sure my phone is fully charged before I get on the plane, precisely because I can't rely on a power bank mid-flight anymore.

Quick Summary

Before You Go

Check the capacity label on your power banks. Make sure you're not packing more than two. And since you can't charge mid-flight, plug in at the airport lounge or gate before boarding — especially if you're on a connecting flight and relying on your phone for boarding passes.