I want you to travel with half a gallon of gasoline (i.e. 2 litres of petrol) in your hold and/or hand luggage. See how that goes for you. And yet, people trav

I want you to travel with half a gallon of gasoline (i.e. 2 litres of petrol) in your hold and/or hand luggage. See how that goes for you. And yet, people travel with one or often more than one battery devices as a matter of utterly unremarkable routine.