Southwest Limits Power Banks to One Per Passenger

Southwest Airlines is tightening its in-flight battery safety rules, becoming the first U.S. carrier to limit passengers to just one portable power bank per person, as concerns grow over lithium battery fire risks onboard aircraft.

The new policy, which takes effect April 20, 2026, goes beyond current international guidelines and reflects increasing industry focus on mitigating in-flight fire hazards linked to portable electronic devices. Under the updated rules, passengers may carry only one power bank, and it must be kept in plain sight at all times, strictly prohibited from being stored in overhead bins.

Passengers can still use power banks to charge personal devices, but they are not allowed to recharge the power bank using in-seat power outlets during the flight. As with existing global regulations, power banks remain banned from checked baggage due to the heightened fire risk.

The move builds on earlier restrictions introduced by Southwest in 2025, when it prohibited passengers from using power banks stored in bags or overhead compartments. The airline said the stricter measures are a direct response to a growing number of incidents involving lithium-ion batteries overheating and igniting mid-flight.

These events are often caused by “thermal runaway,” a chain reaction in lithium batteries where overheating in one cell rapidly spreads, leading to fire, smoke, and potential explosions. Such incidents can escalate quickly and are notoriously difficult to extinguish in the confined environment of an aircraft cabin.

The aviation industry’s heightened focus follows a major January 2025 incident involving an Airbus A321 operated by Air Busan at Gimhae Airport, where a concealed battery fire in an overhead bin led to a full aircraft evacuation and severe damage to the aircraft.

In response, the International Air Transport Association and the International Civil Aviation Organization have updated guidance, recommending limits of two power banks per passenger, with devices kept visible and not charged onboard.

Some international carriers have adopted even stricter policies. Emirates limits passengers to a single power bank, while Qantas and the Lufthansa Group have aligned with IATA and ICAO standards.

Southwest’s decision signals a potential shift in U.S. aviation policy, as more airlines are expected to revisit their battery safety rules in response to evolving risks. With lithium-powered devices now ubiquitous among travelers, regulators and carriers are under increasing pressure to balance passenger convenience with cabin safety.

Sources: AirGuide Business airguide.info, bing.com, paddleyourownkanoo.com