Airplane Luggage
Most items banned from carry-on or checked luggage in your home country are also restricted in China. If you’ve already boarded an international flight bound for China, those same bags can usually travel on domestic flights—power banks are the one notable exception.
Power Banks on Domestic Flights
On domestic flights within China, only power banks bearing the official CCC mark are allowed in carry-on bags. International flights to and from China do not impose this requirement.

If you’ll be catching domestic flights in China, keep an eye on your power bank: it may be easier to buy a compliant one after you land.
Power Banks on Trains
Trains have no such restriction—China’s high-speed rail network lets you travel between cities without a second thought about your power bank.