Quick answer: For a flight to or from Korea, keep power banks in your carry-on, check the watt-hour rating, and pack liquids according to international screening limits. Incheon Airport states that lithium-battery rules depend on capacity and airline policy, so a quick final check with your carrier is worth more than an old packing list.
Power banks: the number that matters is Wh
- 0-100 Wh: generally permitted in carry-on baggage, subject to airline quantity rules.
- 100-160 Wh: airline approval is required; Incheon Airport says up to two may be carried with approval.
- Over 160 Wh: not permitted.
Do not pack a power bank in checked luggage. Some airlines also restrict how it is stored or used in the cabin, so keep it accessible and protect exposed terminals.
Liquids, gels and sprays
Incheon's international-flight guidance applies the familiar cabin rule: put liquids, sprays and gels into containers of no more than 100 ml, then place them inside one transparent resealable bag. Baby food and medically necessary liquids may have separate screening procedures, so allow more time and carry supporting documentation when relevant.
A five-minute pre-security check
- Move power banks, spare batteries and charging cables into your carry-on.
- Check the Wh number on each battery before leaving for the airport.
- Put liquids into one clear bag before joining the security line.
- Keep passports, boarding pass and any medication documents easy to reach.
- Confirm your airline's latest cabin-battery instructions on the day you fly.
Useful links
Incheon Airport official restricted-items guide | Travel insurance for Korea | Current time in South Korea
FAQ
Can I put a 20,000 mAh power bank in checked baggage?
No. Power banks should be kept in carry-on baggage. Check the Wh value and the airline's quantity rules.
Do I need to remove liquids at Incheon Airport?
Follow the security officer's instructions, but packing them in a clear resealable bag before arriving makes screening simpler.
Are the rules identical for every airline?
No. Airport rules and airline cabin rules can both apply, and airlines may set tighter limits.
