Unfortunately no, it has to stay at home... Powerbanks are allowed in hand luggage if they do not exceed a capacity of 100 Wh. This corresponds to a maximum of 26,000 mAh for ordinary powerbanks for smartphones and the like. This corresponds to a maximum of 26,000 mAh for ordinary powerbanks for smartphones and the like. Each airline has its own exceptions for larger capacities. Powerbanks, on the other hand, are prohibited in checked baggage.