Southwest Airlines allows most portable chargers and power banks in both carry-on and checked bags, but specific rules apply to lithium content, watt-hour limits, and number of devices. Understanding these Southwest portable charger policy details helps you avoid surprises at security and boarding.
Below is a quick reference guide to how Southwest handles portable chargers, including limits, documentation needs, and what to expect at checkpoints.
| Item | Carry-on Rules | Checked Bag Rules | Documentation Required |
|---|---|---|---|
| Standard power bank (under 100 Wh) | Allowed, must be accessible for screening | Not permitted | None, if name is visible |
| High-capacity power bank (100–160 Wh) | Allowed with airline approval, max two | Not permitted | Approval documentation recommended |
| Above 160 Wh or damaged units | Not allowed | Not allowed | N/A |
| Lithium metal batteries | Limited quantities in carry-on only | Not permitted | Check packaging and quantity rules |
Know Your Watt-Hour Limits
Southwest follows TSA rules that define portable chargers by watt-hour (Wh) ratings. Most standard power banks sold today fall under 100 Wh and are treated like common lithium-ion batteries. If your device is rated between 100 Wh and 160 Wh, you generally need advance airline approval, and only two such units are allowed per traveler. Anything above 160 Wh is prohibited in both carry-on and checked bags under Southwest portable charger policy.
Carry-On and Screening Procedures
In carry-on luggage, portable chargers must be easy for officers to inspect, so keep them in a dedicated section of your bag rather than buried under clothes. Do not leave them in checked bags, because Southwest and TSA regulations typically forbid power banks in checked luggage due to fire risk. During screening, be ready to remove your largest power bank from your bin so officers can verify its rating and inspect it visually.
Checked Bag Restrictions
Checked bags are not a safe option for portable chargers on Southwest flights. If a power bank is found in a checked bag, it may be confiscated or cause the bag to be inspected further. Always plan to keep your charging devices where you can monitor them throughout the journey under Southwest portable charger policy.
Labeling and Documentation Tips
A clear, factory label showing watt-hour or milliampere-hour ratings makes the screening process smoother. If you are carrying a high-capacity unit that requires airline approval, bring a written confirmation from your carrier or a note from the retailer. Mislabeled, unlabeled, or swollen power banks are likely to be pulled aside or denied boarding.
Travel Smart with Portable Chargers
- Verify watt-hour ratings before you arrive at the airport
- Keep power banks in carry-on only, never in checked bags
- Store them in a dedicated, easily accessible part of your bag
- Carry airline approval for high-capacity units when needed
- Replace damaged or unlabeled units before traveling
FAQ
Reader questions
Can I bring a high-capacity power bank on Southwest if it is approved?
Yes, if the unit is rated between 100 and 160 Wh and you have written approval from the airline, you can carry it in your carry-on baggage, with a limit of two such devices per passenger.
Are power banks allowed in checked bags on Southwest flights?
No, Southwest policy and TSA rules generally prohibit portable chargers in checked bags because of fire hazards associated with lithium batteries.
Do I need to declare my power bank at security or boarding?
You do not always need to declare a standard power bank, but you must keep it in your carry-on and make it accessible during screening. Larger units that require airline approval should be backed by documentation at check-in and inspection checkpoints.
What happens if my power bank is swollen or unlabeled?
Swollen, damaged, or unlabeled power banks are likely to be confiscated at the checkpoint. You should dispose of these items safely before travel and replace them with properly labeled, compliant units.