ATTENTION TRAVELERS! Lithium Batteries Restriction:

Passengers will no longer be able to pack loose lithium batteries in checked luggage on flights in the USA, effective from January 1st 2008. The new regulation is designed to reduce the risk of lithium battery fires and applies to all flights from, to and within the USA. Lithium batteries are considered hazardous materials because they can overheat and ignite in certain conditions. Lithium batteries in checked baggage are allowed if they are installed in electronic devices, or in carry-on baggage if stored in plastic bags (maximum of two extended-life batteries).

*US Department of Transportation*

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http://www.photographyblog.com/index.php/weblog/comments/lithium_batteries_restricted_on_us_flights/