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Wh cannot be read from mAh alone
Multiply mAh by voltage and divide by 1000. Use the rated voltage shown on the battery label.
Power bank Wh calculator
Convert battery capacity to Wh and compare with common carry-on ranges.
Battery details
Airline, country, and airport security rules are authoritative. Confirm final acceptance with your airline.
Power bank flight limits
Frequently asked questions
Is under 100Wh always allowed?
It is a common range, but airline and country-specific restrictions still apply.