Southwest Airlines will require passengers to keep their portable chargers in plain sight while using them due to concerns about lithium-ion battery fires, with the new policy taking effect on May 28. The airline is the first in the U.S. to implement such a rule, following similar actions by Asian airlines earlier this year. The number of incidents involving lithium-ion batteries on planes has been increasing yearly, with portable chargers being identified as a potential cause of battery fires. Experts recommend keeping rechargeable devices within reach during flights to monitor for any signs of overheating or other issues.
Source: https://www.wmur.com/article/southwest-airlines-portable-charger-policy/64836820