An answer is only useful if you can see where it came from.
Official sources, explicit uncertainty
We summarise airline baggage policies and aviation-authority guidance. Each airline page links to its source and records the review date. Specific power-bank restrictions take priority over more general spare-battery guidance. When a source is inaccessible or incomplete, we say so and the checker asks you to confirm.
What a check does—and does not—cover
The calculator evaluates capacity and the quantity entered. It cannot inspect condition, recalls, certification marks, your label or every stop on a journey. It does not issue airline approval. Confirm the latest rules with your operating airline.
How updates work
Reviews are manual. A “last checked” date records a source review, not an airline’s effective date or a promise of live monitoring. Rules may change between reviews. Send corrections through our contact page.
Source directory
- American Airlines official policy — reviewed 2026-11-04
- United Airlines official policy — verification incomplete; source reviewed 2026-11-05
- Delta Air Lines official policy — reviewed 2026-11-05
- Southwest Airlines official policy — reviewed 2026-11-04
- Emirates official policy — reviewed 2026-11-04
- Qatar Airways official policy — reviewed 2026-11-04
- British Airways official policy — reviewed 2026-11-04
- Lufthansa official policy — reviewed 2026-11-04
- Korean Air official policy — reviewed 2026-11-04
- Singapore Airlines official policy — reviewed 2026-11-04
- Cathay Pacific official policy — reviewed 2026-11-04
- ANA official policy — reviewed 2026-11-04
- Japan Airlines official policy — reviewed 2026-11-04
- AirAsia official policy — verification incomplete
- Etihad Airways official policy — reviewed 2026-11-04
- IATA operator guidance, March 31, 2026 (pages 1 and 4)
- Civil Aviation Administration of China
Independent guidance
Not affiliated with any airline, airport or government agency. Final acceptance decisions are made by airline and security staff.
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