New Rules for Power Banks on Korean Flights (Starting March 2025)
If you’re visiting Korea and planning to fly out after March 1, 2025, there’s an important update you need to know. The Korean Ministry of Land, Infrastructure and Transport (MOLIT) has announced stricter rules regarding power banks (portable lithium-ion batteries) on airplanes.
These rules apply to all international travelers, including foreign tourists flying out of Korea. Here’s what you need to know before heading to the airport.
Power Bank Size Limits: How Big Is Too Big?
Battery capacity is now strictly regulated, and it’s measured in Wh (Watt-hours), not the more familiar mAh.
- If your power bank is 100Wh or less (roughly up to 27,000mAh), you can carry up to five without any airline approval.
- If your power bank is between 100Wh and 160Wh, you must get airline approval in advance, and you can carry only two.
- Power banks over 160Wh are not allowed at all.
Remember: power banks are not allowed in checked luggage. They must be carried in your cabin baggage.
| Capacity | Quantity | Airline Approval | Sticker | Short-Circuit Protection | Storage Location (In Flight) |
|---|---|---|---|---|---|
| ≤ 100Wh | 1 to 5 | Not required | Not required | Required | On your person or in the seat pocket (No overhead bins) |
| ≤ 100Wh | 6 or more | Required | Required | Required | Same as above |
| >100Wh and ≤160Wh | Up to 2 | Required | Required | Required | Same as above |
| >160Wh | Any | Not allowed | – | – | Not allowed |
Notes
- Most power banks for personal use are under 100Wh (e.g. 20,000mAh × 3.7V ≈ 74Wh).
- Power banks must be carried in your cabin baggage, never in checked luggage.
- E-cigarettes follow the same rules: allowed in carry-on only.
- Short-circuit protection is mandatory for all batteries, regardless of capacity.
⚠ Mandatory Short-Circuit Prevention Measures
Here’s the most notable change: all power banks must now be protected against short circuits, no matter how small the capacity.
You’ll need to follow at least one of these methods:
- Store each power bank in a separate pouch or zip-lock bag
- Cover the terminals with insulating tape
- Use a plastic cap to cover the connectors
Even if your power bank is under 100Wh, this rule still applies. Skipping this step may result in your power bank being confiscated at security.
Where to Keep It During Your Flight
Once you’re on the plane, you cannot store your power bank in the overhead bin.
Instead, keep it visible and accessible—preferably in the seatback pocket or your personal item under the seat.
This makes it easier to monitor in case of overheating or other issues during the flight.
In-Flight Charging? Not So Simple Anymore
Under these new safety rules, using a power bank during the flight may not be allowed, especially if it’s stored in a sealed pouch or has tape over its terminals.
If you’re flying long-haul, you might not be able to charge your phone using a power bank without violating these new rules.
This could be inconvenient, especially since many travelers now rely on mobile apps and e-tickets stored on their phones.
Use the Plane’s Power Outlets Instead
Many modern aircraft offer USB ports (usually USB-A) or even full 220V outlets, depending on the airline and seat class.
If you usually carry a USB-C to USB-C cable, consider packing a USB-A to USB-C adapter just in case.
It’s a small item, but it can be a lifesaver on older planes.
Summary for Travelers
- Power banks must be in your carry-on—never checked baggage
- Up to 5 devices under 100Wh can be brought without airline approval
- Devices over 100Wh require approval, and are limited to 2
- Short-circuit protection is mandatory (tape, pouches, or terminal caps)
- No storage in overhead bins—keep them in sight
- In-flight charging with a power bank may not be allowed
Final Tip
Before heading to the airport, double-check the capacity labels on your power banks. Prepare individual bags or tape if needed. And don’t forget a charging cable and adapter that fits the plane’s outlet type.
Safe travels—and keep your devices charged smartly!
