Tuōyùn xíngli qián, jìde bǎ chōngdiànbǎo ná chūlai.
Before you check in your luggage, remember to take out your power bank.
Tips
usage
托运行李 travels in the hold; the bag you keep with you is 手提行李 'carry-on luggage'. Power banks and spare lithium batteries are not allowed in checked baggage.
