Taking power banks on planes: what you need to know before you fly

Power banks have become travel essentials, especially for long journeys where charging points are limited or unreliable. But because they contain lithium batteries, airlines treat them as a safety-sensitive item. If you’re planning to fly, it’s worth understanding the rules before you pack one in your bag. 

Can you take a power bank on a plane? ¶

Yes - but only in your hand luggage.

Airlines and aviation authorities such as the UK Civil Aviation Authority (CAA) and international regulators require power banks to be carried in cabin baggage, not in checked luggage. The reason is simple: if a lithium battery overheats or fails, it can be dealt with quickly in the cabin, but a fire in the aircraft hold is much harder to manage. 

Understanding watt-hour limits

Power banks are rated in watt-hours (Wh), and this determines whether you can bring them on board.

Most airlines follow these general thresholds:

• Up to 100Wh: Usually allowed without approval  
• 100Wh to 160Wh: Allowed, but you typically need airline approval  
• Over 160Wh: Not allowed on passenger aircraft  

Check the label on your device to find out the wattage.

How many power banks can you bring?

This varies by airline, but many allow a reasonable personal amount - often two or fewer devices under 100Wh each without special permission. Some airlines are stricter, so it’s always worth checking your specific carrier’s rules before you travel.

Using power banks during the flight

Most airlines allow you to bring power banks on board, but usage rules can differ:

• Power banks should not be used on board
• Power banks must not be recharged on board

If you’re flying long-haul, it’s a good idea to fully charge your devices before boarding rather than relying on inflight charging policies.

If you are allowed to use your power bank on board and notice that it is getting hot report it to cabin crew immediately.