If you fly, you will generally take the initiative to declare that there is a built-in battery. If you don't know, the goods with electricity inside pass the security check and are not detected, which is basically called a success. If the goods are found to have built-in batteries during security inspection, the aviation security inspection department will directly detain the goods, or provide correct information, some documents, or appropriate packaging and transportation methods, or return them to the airline, and the airline will impose a certain fine as appropriate, or directly return the goods to the customer. Don't worry that the security detention will be a return and a warning to the airline, which will cause serious consequences and the company will be fined and disqualified. I used to drive a sweeper from Germany with a big battery in it. TNT found out at that time. Later, TNT said that it could operate and there was an operating fee. It cost a little money to take out the battery, pack it separately, put it in a sandbox and ship it to Hong Kong. This is an example that suddenly occurred to me. That's great. However, not all air freight or international express delivery are like this, depending on luck. If the battery built in the instrument is exported and transported by air in Hong Kong, it basically has no influence, the export is easy and the goods are powered by electricity.