Overview
- Ryanair and British Airways cap carry-on personal electronic devices at 15, with each device’s battery typically limited to 100Wh.
- Ryanair permits up to 20 spare lithium batteries or power banks if each is 100Wh or below, and anything over 100Wh is barred from both cabin and hold.
- British Airways enforces the 15-device limit and will not accept batteries if the watt-hour rating is missing or cannot be verified.
- Smart bags face strict limits: Ryanair bans non-removable batteries above 2.7Wh in the cabin and disallows such bags in the hold, while BA rejects smart baggage if the battery cannot be detached.
- GOV.UK lists common electronics allowed in luggage, advises keeping e-cigarettes in hand luggage, and urges travellers to confirm carrier-specific battery policies before flying.