Why Southwest Airlines Is Now Letting You Bring Only One Portable Charger on Your Flight?

Southwest Airlines has drawn a firm line in the sky over portable chargers. The Dallas-based carrier announced it will limit passengers to one lithium portable charger on flights and ban them from being stowed in overhead bins to reduce the risks of in-flight battery fires. The new rule takes effect on April 20, 2026, and is among the strictest of its kind adopted by a major U.S. airline.

What the New Policy Requires

Southwest Airlines confirmed that each passenger will now be limited to a single lithium portable charger, commonly known as a power bank. Additionally, these devices must be kept either on the passenger's person or in an under-seat carry-on bag, eliminating the option of storing them in overhead compartments. 

Southwest's own guidance specifies that portable chargers used onboard must stay visible and may not be used to charge devices in overhead bins. The airline has also prohibited recharging power banks using in-seat power systems during flights, a practice that was previously permitted and widely used by passengers on longer journeys.

Southwest will also equip flight attendants with fire-resistant bags and insulated gloves to handle overheating devices. Southwest's Vice President of Safety and Security, Dave Hunt, was direct about the policy's purpose. The airline said the new restrictions aim "to strengthen our ability to contain ⁠and ​mitigate lithium battery incidents, including reducing the ​risk of battery fires." Hunt added that Southwest will be emphasising the new rules to passengers when they book their flights and arrive at the airport, explaining the potential dangers. 

Going Further Than Global Standards

Southwest's one-charger cap is notably stricter than the international baseline recently set by the world's aviation authority. ICAO moved on March 27, 2026, to limit power banks to two per passenger and prohibit in-flight recharging. 

Southwest's stricter one-device rule goes beyond these guidelines, positioning the carrier among the more cautious operators in the industry. It is a meaningful signal that, in the absence of a U.S. federal mandate, at least one major domestic carrier is choosing to exceed the international minimum.

A Rising Tide of Battery Incidents

The policy is underpinned by a troubling and well-documented trend. The FAA said there have been a total of 709 verified lithium battery incidents reported over the past 20 years, between March 3, 2006 and March 7, 2026, including 95 last year and 14 this year so far. The federal body notes that "these are verified lithium battery-related events involving smoke, fire, or extreme heat that the FAA is aware of," and is not a complete listing of all such incidents. 

Keeping power banks out of overhead bins improves the odds that a problem is seen early and handled quickly, instead of smouldering inside a closed compartment above passengers. Limiting the number of batteries per passenger also reduces the total risk load carried in the cabin. 

UL Standards and Engagement, the organisation that sets guidelines for portable chargers, said that it hears about two battery incidents every week.

A Global Industry Shift

Southwest is not acting in isolation. Airlines within the Lufthansa Group and authorities in countries such as South Korea have introduced tighter controls following numerous incidents, including a 2025 fire aboard an Air Busan aircraft and two separate incidents involving major Asian carriers in January 2026. 

In late 2025, the U.S. Federal Aviation Administration issued a safety alert to airlines surrounding risks caused by lithium batteries in aircraft passenger compartments. 

What Travellers Should Do Now

For passengers who routinely travel with multiple power banks, the advice from analysts is straightforward: adapt before April 20 rather than at the gate. A battery replacement, a higher capacity single bank that fits airline rules, or a full charge plan built around airport outlets is the cleaner fix. Waiting until check-in or boarding raises the chance of last-minute bag reshuffling and a weaker battery position once the flight is underway.

Looking further ahead, Southwest plans to install in-seat power across its entire fleet by mid-next year, so passengers will have one fewer power bank, but at least a place to plug in.