Kingston says that airport x-ray machines do not affect flash memory:
http://www.kingston.com/flash/digitalmedia_care.asp
The battery should be unaffected, though there are some security restrctions on large lithium batteries (larger than most laptop batteries, so you're fine there).
http://tinyurl.com/3qth4hd
http://studenttravel.about.com/od/pl...rtsecurity.htm has links to assorted advice on dealing with airport stupidity.