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What Is Southwest Airlines’ Lithium Battery Policy?

Southwest Airlines permits lithium batteries in carry-on bags but prohibits them in checked luggage. Devices like laptops, phones, and medical equipment are allowed, but spare batteries must be individually protected. Batteries exceeding 160 watt-hours (Wh) are banned. For details on power banks, e-cigarettes, and international flights, review Southwest’s guidelines to ensure compliance and avoid travel disruptions.

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How Does Southwest Airlines Classify Lithium Batteries?

Southwest categorizes lithium batteries by type (ion or metal) and energy capacity. Consumer-grade lithium-ion batteries under 100 Wh (e.g., phones) are allowed without approval. Those between 100-160 Wh (like professional cameras) require airline notification. Lithium metal batteries (non-rechargeable) must be under 2 grams of lithium content. All spare batteries must remain in original packaging or insulated sleeves.

Battery Type Energy Limit Special Requirements
Lithium-ion <100 Wh No approval needed
Lithium-ion 100-160 Wh Airline notification required
Lithium metal <2g lithium Must be non-rechargeable

This classification system helps crew members quickly identify potential hazards. Passengers should note that battery-powered mobility devices fall under different regulations – scooters and wheelchairs require specific handling procedures. Southwest’s website offers a downloadable battery capacity calculator to help travelers determine their devices’ watt-hour ratings before packing.

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What Are the Rules for Spare Lithium Batteries on Southwest?

Passengers may carry up to 20 spare lithium-ion/polymer batteries in carry-ons. Each must be protected against short circuits using manufacturer cases or tape on terminals. Lithium metal spares are limited to two per person. Batteries installed in devices don’t count toward this limit. Southwest strictly enforces these rules to mitigate fire risks.

The 20-battery limit applies specifically to loose batteries not installed in devices. This restriction addresses the increased fire risk when multiple energy-dense batteries are stored together. Aviation safety experts recommend using separate plastic bags for each spare battery, even when using protective cases. For photographers and videographers carrying numerous camera batteries, Southwest suggests spreading batteries across multiple carry-on items to prevent exceeding the limit in any single bag.

Can You Pack Lithium Batteries in Checked Luggage on Southwest?

No. Southwest prohibits loose or installed lithium batteries in checked bags due to FAA fire safety regulations. Exception: FAA-approved medical devices with batteries under 160 Wh. Passengers must declare these at check-in and ensure devices are completely powered off. Violations may result in baggage removal or fines.

How Does Southwest Handle Damaged or Recalled Batteries?

Southwest bans swollen, punctured, or recalled lithium batteries. If a device shows signs of damage during screening, it will be confiscated. Passengers with recalled battery models (e.g., specific Samsung Galaxy phones) must remove batteries before travel. The airline follows IATA Dangerous Goods Regulations for hazardous material handling.

What Documentation Is Required for High-Capacity Batteries?

Batteries between 100-160 Wh require a completed Southwest Lithium Battery Approval Form submitted 48 hours before departure. Medical device batteries need a physician’s letter detailing necessity. International travelers must provide UN38.3 test certification for spare batteries exceeding 100 Wh. Failure to present documents may result in denied boarding.

Are E-Cigarettes and Vaping Devices Permitted on Southwest?

Yes, but only in carry-ons. Vape pens must be emptied of liquid, with batteries removed if possible. Charging mid-flight is prohibited. Southwest follows FAA rules prohibiting device use or charging in lavatories. Penalties for non-compliance include up to $4,000 fines.

“Southwest’s policy aligns with global aviation safety standards, but passengers often underestimate the risks. A single thermal event from a damaged battery can compromise cabin safety. Our industry studies show 87% of battery incidents occur from improper storage. Always check manufacturer recalls before flying – it’s a frequently overlooked step.”

– Aviation Safety Consultant, Battery Transport Alliance

FAQs

Can I bring a power bank on Southwest?
Yes, if ≤160 Wh and in carry-on. Maximum two spares.
Are AAA lithium batteries allowed?
Yes, if lithium metal batteries are under 2g lithium content.
How to pack camera batteries?
Keep in original cases. For 100-160 Wh batteries, notify the airline.
What happens if I accidentally check a battery?
Baggage may be offloaded. Fines up to $2,000 apply.