It's really hard to ban all the Li-ion battery in the air transport. Right now, most electronic devices containing Li-ion battery as a complete package and need to be transportted by air. The cargo carrier will not say NO to such bussiness even few aircraft accidents happened which Li-ion battery is involved, e.g. UPS accident in Dubai,2009 and the Asiana accident today. The big boss of cargo carrier has to secure the business unless all the cargo carriers say NO.