The biggest Cygnett power bank that is within the guidelines set by the International Civil Aviation Organisation (ICAO) is the 27,000mAh USB-C Power Bank.
Please note: The information above is simply a guide and it is always best to check directly with the airline.
For more information read - Power banks & air travel: What you need to know.
CHARGEUP MAX 30,000 Mah Power Bank cannot be taken on a flight.