A power bank is in almost every traveler's bag today, but taking it on a flight has strict rules. A lithium-ion battery is a fire hazard, so aviation controls it carefully. In 2025-2026 the rules tightened further β many airlines banned storing a power bank in the overhead bin. Let's see what's allowed and how to avoid trouble at check-in and security.
π The main rule β carry-on only
Carry a power bank and spare lithium batteries in your cabin bag only β putting them in checked luggage is strictly forbidden. The reason is simple: if a battery ignites in the cargo hold, the crew can't reach or extinguish it.
This rule applies to every airline worldwide, low-cost ones included. Factor it into your carry-on planning β see hand luggage only travel and carry-on luggage rules.
If you forget a power bank in checked luggage, security may open the whole suitcase to inspect it β which delays your flight. Always move the battery to your carry-on.
β‘ How many watt-hours are allowed
- Up to 100 Wh: freely allowed β this covers most power banks (e.g. 20,000 mAh β 74 Wh)
- 100-160 Wh: allowed only with airline approval, usually a maximum of 2 units
- Over 160 Wh: banned on board β that's professional-equipment level
- To convert mAh to Wh: (mAh Γ volts) Γ· 1000; a typical power bank runs at 3.7V
π« Why overhead-bin storage was banned
After several 2025 incidents where a power bank overheated on board, many airlines introduced a new rule: during the flight a power bank must no longer be kept in the overhead bin β it must stay within reach, in plain sight, so the crew can respond quickly if there's a problem.
Some airlines also ban charging a device from a power bank during the flight. Rules vary slightly by airline β check your carrier's website before you fly.
For charging, many modern aircraft have a USB port or power outlet at the seat β reducing your reliance on a power bank. See the in-flight connectivity and electronics guide.
β Practical tips before check-in
- Read the watt-hours or mAh on your power bank in advance β the label is usually on the casing
- Never bring a damaged or swollen power bank β it's dangerous and will be confiscated
- Cover the battery contacts or put it in a separate pouch β to prevent a short circuit
- If you have more than one power bank, store each separately
- Avoid cheap unbranded power banks β a certified one (CE, UN38.3) is safer
𧳠How to plan smartly
A power bank is an essential part of travel, especially on a long flight and when navigating a new city. A well-chosen model under 100 Wh meets every rule, while packing it correctly in your carry-on saves time at security β see packing tips.
When planning your trip, get an eSIM in advance for internet, and find a cheap ticket with Travel365's flight search. A well-packed bag saves you nerves at the airport.
Charge your power bank fully before the flight β a powered device raises no suspicion at security, and you can't always find a charger during a long layover.
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