Southwest Airlines Power Bank Rules 2026
You can take up to 1 power bank of up to 100 Wh, in carry-on only. In-flight use: restricted.
At a glance
Capacity
Up to 100 Wh (≈ 27,000 mAh)Allowed
Over 100 WhNot allowed
Rules
Power banks per passengerup to 1
Use in flightRestricted
Charge in flightNot allowed
Checked baggageNot allowed
What else matters
Where to keep itPersonal item under the seat; not in the overhead bin
Capacity markingKeep the capacity (Wh, or mAh and V) readable on the case so staff can check it.
Over the limitIt will be taken at security: power banks may not go in checked baggage.
Codeshares and connectionsThe rules of the airline that operates the flight apply. With a connection, follow the strictest one.
SourceOfficial Southwest Airlines rule ↗ · reviewed on 9 October 2026
Questions about Southwest Airlines and power banks
How many power banks can I take on Southwest Airlines?
Southwest Airlines allows up to 1 power bank per passenger, in carry-on baggage only.
What is the Southwest Airlines power bank capacity limit?
Up to 100 Wh per power bank. Larger power banks are not accepted.
Can I use or charge a power bank on an Southwest Airlines flight?
Using it in flight: permitted only while the power bank is visible; follow crew instructions. Charging the power bank itself on board: not allowed.
Can I put a power bank in checked baggage on Southwest Airlines?
No. Power banks are spare lithium batteries and travel in the cabin only.
