As of May 28, Southwest Airlines’ new charger policy is in effect. The change comes after multiple safety incidents and dozens of recalls involving overheating or exploding chargers, according to Travel and Leisure.

That new twist may confuse some passengers who are used to paying for checked bags online, sometimes for a reduced cost, at other airlines. According to The Points Guy, Southwest

It’s the last day to book a flight on Southwest Airlines without being hit with a fee to check bags after the airline abandoned a decades-long luggage policy.