I read that as of jan 1, 2008 "loose" lithium ion batteries are no longer permitted on carry on luggage by the TSA when flying. They are supposed to be with checked in baggage. Would an external battery pack such as the imax power pack qualify as a "loose" lithium ion battery? Has anyone had issues with carrying an external battery pack onto a flight? I just bought an external power pack and will be flying soon and don't want this confiscated if this is a problem item. Thanks.