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Ten days after Dell’s record-setting notebook battery recall, Apple Computer Inc. told its customers Thursday to return 1.8 million batteries that could cause their Mac laptops to overheat and catch fire.
Both recalls involve lithium-ion batteries made by a Sony Corp. subsidiary in Japan, where the manufacturing process introduced metal particles into battery cells. Makers of battery cells strive to minimize or eliminate the presence of such particles, which can cause computers to short circuit, or, in extreme situations, catch fire.
In its recall announcement, Apple said it has received nine reports of lithium-ion battery such as Sony PCG-TR1C Battery , Sony PCG-TR1MP Battery , Sony PCG-TR2 Battery , Sony PCG-V505 Battery , Sony PCG-XE Battery , Sony PCG-Z505 Battery , Sony VGN-CR205 Battery , Sony VGN-CR21 Battery , Sony VGN-CR215 Battery , Sony VGN-CR23 Battery , Sony VGN-CR310 Battery , Sony VGN-CR320 Battery packs overheating, including two cases in which users suffered minor burns and some involving minor property damage. The Apple recall only applies to older notebooks — not the just-released MacBooks and MacBook Pros.
On Aug. 14, Dell Inc. recalled 4.1 million faulty laptop batteries — the largest involving electronics in the history of the U.S. Consumer Product Safety Commission.
Sony Energy Devices Corp. said the Dell and Apple batteries were configured in slightly different ways. In a statement, Sony said the problems arise “on rare occasions” when microscopic metal particles hit other parts of the battery cell and lead to a short circuit.
Sony said the recalls will cost it between $172 million and $278 million. Apple spokesman Steve Dowling said its recall was not expected to materially affect the company’s results.
Spokespeople at other large computer makers, including Hewlett- Packard Co., Gateway Inc. and Lenovo Group, the Chinese computer maker that bought IBM’s PC business, said Thursday they did not expect to have problems with their batteries.
Although Lenovo uses Sony batteries, Lenovo engineers configured their battery packs differently than Dell or Apple. They also rigorously tested the battery packs with Sony engineers, and they’re “highly confident” the laptops aren’t going to overheat.
“Lenovo designs its battery packages a different way,” said Lenovo spokesman Bob Page. “How close the battery pack is it to a heat source, how evenly can you keep the heat in battery cells, the basic geometric arrangement of the cell — all those things affect whether there will be problems.”