US bans spare lithium batteries from checked bags

New rules in the US from jan 1 will prohibit air passengers from packing spare laptop batteries in their checked luggage.

New rules will go into effect on Jan. 1 that prohibit air passengers in the U.S. from carrying spare lithium batteries in their checked baggage.

The new rules, announced Friday by the U.S. Department of Transport, are designed to reduce the risk of fires in aircraft. Lithium batteries have been identified as a possible cause of several aircraft fires.

Passengers will still be able to carry lithium batteries in checked bags if they are installed in a device like a laptop or digital camera. But loose batteries will need to be put in a plastic bag and carried on the plane as hand luggage, the DOT said.

The rules also limit each passenger to two "extended-life" lithium batteries. These are larger batteries with more than 8 grams of equivalent lithium content, examples of which are pictured in the DOT's statement.

The rules are also described at the SafeTravel.dot.gov Web site.

In February 2006, a United Parcel Service flight landed at Philidelphia International Airport after the crew detected a fire in its cargo. The National Transportation Safety Board said later that it found several burned out laptop batteries on the plane, and could not rule them out as a possible cause of the fire.

Lithium batteries are a fire hazzard because of the heat they can generate when they are damaged or suffer a short circuit, the NTSB said at a hearingabout the Philidelphia incident last July.

"Several lithium battery incidents have occurred in recent years, including a lithium-ion battery fire that occurred less than two months ago on an airplane in Chicago," the NTSB said.

Several big makers of laptops and cell phones, including Dell and Nokia, have recalled batteries recently because of flaws that created a potential fire hazzard.

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