Airlines mostly dislike 20,000 mAh power banks that can self-ignite in the checked-in luggage. If they detect something like that in your luggage, they will k

Airlines mostly dislike 20,000 mAh power banks that can self-ignite in the checked-in luggage. If they detect something like that in your luggage, they will kindly ask you to take it in the cabin. They never cared about CR2032 cells.