Are Charging Cables Allowed On Airplanes. Should be OK but it depends on the kind of battery the power block contains. Pack your device chargers in your carry-on bag and always carry a carry-on bagThis morning I packed my bags one carry-on and one checked bag for a week-long trip.
Each portable charger must not exceed 100Wh watt-hours. For lithium-ion chargers 100 watt hours is equivalent to 26800 mAh milliamp hours. You need not to worry as portable charger or power bank are hundred percent allowed on plane.
Charging Cable allowed in Hand Luggage.
Laptop charger inside the bag is exempted as well as chargers for phone tablet and cameras. You might want to carry extra battery packs and not the kind you put in. For lithium-ion chargers 100 watt hours is equivalent to 26800 mAh milliamp hours. See the USB-C charger list.
