Japan Airlines power bank rules
What Japan Airlines’s own page says about power banks, checked 22 October 2026.
The rules
- No more than 2 power banks per passenger, each 160 Wh or less
- Charging power banks from in-seat power outlets or USB ports is prohibited
- Using power banks to charge other devices on board is prohibited
- Please don’t stow power banks in the overhead compartments
- Cannot be checked in
- JAL notes the limit may be reduced to 100 Wh from January 2027
| Using it on board | Using it to charge other devices on board is prohibited |
|---|---|
| Charging the power bank | Charging via in-seat outlets or USB ports is prohibited |
| Where to keep it | Please don’t put it in the overhead compartments |
Source: jal.co.jp, checked 22 October 2026. Rules can change and can differ on codeshare flights, so check with the airline that operates your flight.
Common sizes on Japan Airlines
| Power bank | Wh | One power bank |
|---|---|---|
| 10,000 mAh at 3.7 V | 37.0 Wh | Allowed |
| 20,000 mAh at 3.7 V | 74.0 Wh | Allowed |
| 27,000 mAh at 3.7 V | 99.9 Wh | Allowed |
| 40,000 mAh at 3.7 V | 148.0 Wh | Allowed |
Wh = mAh ÷ 1000 × V. We show 3.7 V as an example; use the voltage printed on yours. Check yours with the calculator →
Japan Airlines cabin bag size
Packing your hand luggage too? See the Japan Airlines cabin bag size and weight allowance, or check your bag against 36 airlines with the cabin bag checker.
Other airlines
UK & Ireland: Aer Lingus · British Airways · easyJet · Jet2 · Loganair · Ryanair · TUI Airways · Virgin Atlantic
Europe: Air France · Austrian Airlines · Finnair · Iberia · ITA Airways · KLM · Lufthansa · Norwegian · SAS · SWISS · TAP Air Portugal · Turkish Airlines · Vueling · Wizz Air
North America: American Airlines · Delta Air Lines · United Airlines
Middle East & Africa: Emirates · Etihad Airways · flydubai · Qatar Airways
Asia-Pacific: Air India · Air New Zealand · ANA (All Nippon Airways) · Cathay Pacific · Malaysia Airlines · Qantas · Singapore Airlines · Virgin Australia