Generally, yes; most airport security protocols require power banks to be removed and placed in a separate tray for X-ray screening. Because power banks contain lithium-ion batteries, they are classified as "Dangerous Goods." Security scanners need a clear view of the battery's capacity (usually limited to 100Wh or 160Wh with airline approval) to ensure it doesn't pose a fire risk. Furthermore, as of 2026, many aviation authorities have tightened rules, strictly prohibiting power banks in checked luggage and requiring them to be easily accessible in the cabin. Always check local airport signs, as some newer 3D scanners (CT scanners) allow electronics to stay inside the bag.