Several airlines, including Ryanair, British Airways, and Lufthansa, have imposed a strict limit on the number of electronic items passengers can carry in the cabin. The rule permits a maximum of 15 personal electronic devices, each with a watt-hour rating not exceeding 100Wh.
Ryanair's official advice states: 'You may carry up to 15 personal electronic devices (smartphones, tablets, laptops, cameras, handheld game consoles, headphones, power banks). You may also carry up to 20 spare lithium batteries or power banks, provided they do not exceed 100Wh each.' Devices or batteries over 100Wh are not allowed in either the cabin or the hold.
British Airways similarly allows up to 15 battery-operated personal electronic devices containing lithium batteries, such as laptops, tablets, smartphones, cameras, music players, and smart baggage tags like Apple AirTags. If the watt-hour rating is not shown on the battery or cannot be determined, the battery cannot be accepted onboard.
Both airlines also have strict rules regarding 'smart bags'—luggage with built-in power banks. Ryanair prohibits smart bags in the cabin if they have non-removable batteries above 2.7Wh. If the battery is removable, it must be taken out and placed in small cabin baggage under the seat. BA does not allow smart baggage if the lithium battery or power bank cannot be detached by the customer.
Passengers are advised to check their airline's website for the most up-to-date information before flying. The government also lists nine main items allowed in hand and checked luggage, but notes that restrictions on certain types of batteries may apply.
