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Airport security hates mystery power banks with no watt-hour print, and they hate a nest of unique cables. One GaN brick, a USB-C cable you trust, and a printed Wh rating on the bank.
The brick
A 65 W GaN charger with USB-C PD covers a laptop and a phone for most writers. 100 W if you insist on charging a 16-inch laptop at full tilt in a lounge. Skip eight-port cubes you will never fill.
Power banks
Print or photo the Wh number. Stay under airline limits. Anker 737-class banks are the ones people actually finish trips with; no-name banks with fake capacity are how you sit on the floor by an outlet.
Who should skip a full kit
Skip extra mag-safe packs if USB-C already charges the phone. Skip a travel kettle. Confirm your airline’s battery rules the night before, not at the belt.
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