Power Bank Should Be Kept In Hand Luggage. You can calculate the watt-hours by multiplying the mAh by the voltage and dividing by a thousand. First of all it will depend on the voltage of the power bank.

Powder substances or granular materials weighing 350ml350g12oz or greater are not permitted in your cabin baggage and must be placed in your checked baggage. Weapons such as whips nan-chakus baton or stun gun. Ad Dont Buy Until You Read This.
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Answer 1 of 8. Hand luggage restrictions at UK airports - carry-on luggage checked-in baggage restricted items and liquids electronic devices carried from Turkey Lebanon Egypt and Saudi Arabia. Most airlines now prohibit power banks and lithium batteries in check in luggage but they are fine in hand luggage. You should not carry your power banks in the check-in luggage but it is fine to carry a maximum of two power banks in your hand carry-on luggage in a flight rules may differ from airline to airline.
