Five airlines under Hanjin Group, including Korean Air Lines, said on the 23rd they will impose a blanket ban on the use of portable batteries on board. The revised portable battery policy will take effect on the 26th on domestic and international flights operated by Korean Air Lines, Asiana Airlines, Jin Air, AIR BUSAN, and AIR SEOUL. Accordingly, charging electronic devices such as mobile phones, tablet PCs, laptops, and cameras with portable batteries carried on board is prohibited.