Can I take this power bank on a flight?
First calculate Wh from the exact label, then check the dated authority profile and every operating airline. Current IATA operator guidance and the FAA baseline do not give the same answer above 100 Wh.
Method
Calculated Wh = mAh × nominal V ÷ 1,000. If a printed Wh value is entered, the report uses that as the reference and shows the calculation difference.
Important limitation
This is a source comparison, not security clearance. Airlines, airports and itineraries may be stricter; damaged, recalled or illegibly labelled batteries can be refused.