Yes, in carry-on only — never in checked bags. Up to 100 Wh (about 27,000 mAh) without approval; 100–160 Wh with airline approval; over 160 Wh not allowed. Some airlines now ban using or charging power banks in flight and require them within reach.
Lithium batteries are a fire risk, so power banks and spare batteries must travel in the cabin where crew can respond.
Limits (Wh = mAh × V ÷ 1000; most banks are 3.7 V):
- ≤100 Wh (≈27,000 mAh): allowed, usually up to two.
- 100–160 Wh: airline approval needed.
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160 Wh: prohibited.
Recent rule tightening: after several in-flight fires, a number of Asian and Gulf carriers banned using power banks on board or storing them in overhead bins — they must stay in the seat pocket or under the seat. Check your airline’s page before you fly.
Unlabelled banks (no Wh or mAh marking) can be confiscated. Tape the terminals of spare batteries or keep them in original packaging.
Related questions
What is the 3-1-1 liquids rule?
Each liquid, gel or aerosol in your carry-on must be in a container of 3.4 oz (100 ml) or less, all fitting in one quart-size (1 litre) clear bag, one bag per passenger. Medications and baby food are exempt but may be inspected. Full answer →
Can you bring food through airport security?
Yes — solid food (sandwiches, fruit, snacks, chocolate) is fine in carry-on. Liquids and spreads (soup, yogurt, hummus, jam) fall under the 100 ml rule. Fresh produce and meat may be banned on arrival in another country. Full answer →
Airline, airport and government rules change without notice. Treat this as a starting point and confirm with the airline or authority for your specific trip. Request a correction if something is out of date.