This may finally explain why I had to eventually give up trying to post faulty earbuds to Amazon — vapes confiscated from checked-in flight baggage:
Aviation Security said the charger case for … wireless earbuds was a form of power bank, which was among the restricted items.
Miraz Jordan @pratik I gave it my best try but the PO wouldn't accept them. I guess the parcel goes in an aircraft's hold and they're regarded as too dangerous… Dunno how Amazon got them to me in a week if not by plane, but perhaps they have different rules, or their own planes.