are recalling more than 500,000 potentially hazardous
notebook batteries, the fourth such recall in recent months.
Lenovo, which purchased IBM's personal computer business, cited a potential risk after one confirmed report of a Sony battery overheating and causing a fire that damaged the notebook computer while its owner was boarding a plane at Los Angeles International Airport.
asked customers to return 4.1 million faulty laptop batteries, and
recalled 1.8 million batteries worldwide, warning that they could catch fire.
said it was
recalling 340,000 laptop batteries.
Shares of Sony were recently off 33 cents to $41.18; IBM shares were off a penny to $82.08.