Southwest Airlines is introducing a new rule, requiring passengers to keep power banks and portable charging devices in plain sight while traveling on its planes.

Passengers flying on Southwest Airlines will soon have to take their portable chargers out of their bags if they want to use them in the air. Southwest will begin a new policy requiring portable charging devices to be kept in plain sight on Wednesday,

The carrier will require passengers to keep lithium batteries visible while in use in order to allow flight crews to respond more quickly in case one catches fire.

Southwest Airlines is implementing a surprising new restriction on portable chargers to keep these notoriously incendiary devices from bursting into flame mid-flight. Starting May 28, passengers will be required to keep their power banks in plain sight, making the budget carrier the first to roll out a policy of this kind.

Southwest Airlines passengers must soon keep portable chargers visible during flights due to rising lithium battery fire incidents. The policy begins May 28.

Southwest is banning the use of portable charging devices stored in a bag or overhead bin following incidents including a fire on an Air Busan flight.

A Southwest Airlines flight en route to Denver was struck by lightning as it descended into the city on Sunday.