Delta Air Lines power bank rules
What Delta Air Lines’s own page says about power banks, checked 22 October 2026.
The rules
- No more than two power banks per person
- Each may not exceed 100 Wh, with no exceptions
- Must not be recharged on board, or used to recharge a device during taxi, take-off and landing
- Store somewhere easily accessible, such as under the seat in front or in the seatback pocket; not in an overhead bin
- Spare lithium batteries: carry-on only, individually protected
| Using it on board | Must not be used to recharge a device during taxi, take-off or landing |
|---|---|
| Charging the power bank | Must not be recharged on board |
| Where to keep it | Underneath the seat in front or in the seatback pocket; not in an overhead bin |
Source: delta.com, 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 Delta Air Lines
| 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 | Not allowed |
Wh = mAh ÷ 1000 × V. We show 3.7 V as an example; use the voltage printed on yours. Check yours with the calculator →
Delta Air Lines cabin bag size
Packing your hand luggage too? See the Delta Air Lines 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 · United Airlines
Middle East & Africa: Emirates · Etihad Airways · flydubai · Qatar Airways
Asia-Pacific: Air India · Air New Zealand · ANA (All Nippon Airways) · Cathay Pacific · Japan Airlines · Malaysia Airlines · Qantas · Singapore Airlines · Virgin Australia