Urgent: New Lithium Battery Rules Impacting Travelers by 2026

UPDATE: A critical new safety regulation regarding lithium battery usage is set to reshape how passengers travel, with Southwest Airlines enforcing stringent rules in less than a year. Effective January 11, 2026, all lithium batteries for mobility devices checked in must not exceed 300 watt-hours, a move aimed at averting potential fire hazards onboard.

This urgent policy change comes as safety concerns mount over lithium batteries, which are linked to rare but severe smoke and fire incidents in aircraft. Starting September 25, 2025, Southwest will require all passengers to remove removable lithium batteries from wheelchairs and scooters, compelling them to carry these batteries into the cabin for safety.

According to a memo from Southwest, “Lithium batteries have become one of the most common sources of smoke and fire incidents on aircraft.” The airline emphasized the need for “quick access and visibility” to maintain safety for everyone onboard.

The impending deadline is significant for travelers who rely on lithium-powered mobility devices, as those exceeding the watt-hour limit will not be permitted to fly after January 11, 2026. To assist passengers in adjusting to these new regulations, Southwest has implemented a grace period; however, this window will close on the enforcement date.

Passengers can breathe a sigh of relief knowing that wheelchair batteries brought into the cabin will not count against their carry-on allowance, a move designed to ease the transition during this critical time.

The stricter standards follow recent federal warnings about the dangers of lithium batteries in passenger cabins. The FAA issued a safety alert in September advising airlines to enhance passenger messaging and review firefighting protocols amid increasing incidents involving lithium batteries. The agency has stressed that spare lithium batteries and portable chargers must remain in carry-on luggage, allowing crew to respond swiftly in the event of overheating.

Southwest is not alone in this effort; major carriers like American Airlines, Delta Airlines, and United Airlines also have their own restrictions regarding mobility device power supplies, each with varying policies.

As these changes loom, travelers are urged to prepare and stay informed to ensure a smooth journey. With safety as the priority, all eyes are on the airlines to implement these new regulations effectively.

Stay tuned for updates on this developing story as we monitor how these crucial changes will affect air travel in the coming months.