Toshiba has recalled thousands more Sony battery packs in response to concern over fire risk. The recall is not connected to the industry-wide recall last year in response to other faulty Sony batteries.
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Toshiba has logged laptop battery overheating incidents in both 2006 and 2007 in connection with the latest faulty battery batch.
Toshiba said, "Over a relatively short period, certain incidents occurred where certain battery packs installed in Toshiba portable computers caught fire.
"Based on its investigation, Sony Corporation, supplier of the subject batteries, concluded that certain battery cells manufactured in a specific manufacturing lot could be affected by a certain issue that could potentially lead to a safety issue."
Toshiba said Sony assured it the recall programme should be limited to the manufacturing lot of the battery cells in question, and not others.
Toshiba laptop models fitted with the faulty batteries are the Satellite A100/A105 and the Tecra A7.
Toshiba's recall notice does not say how may batteries are affected by the problem, but Reuters reports that more than 5,000 packs are affected.
It is not known at this stage whether other laptop manufacturers were supplied from the same faulty batch.
Last year, Sony had to replace approaching 10m batteries used in machines from various manufacturers, including Dell, Apple and Toshiba.
Since this problem, Dell, Apple and Lenovo have all experienced other different faulty laptop battery problems.
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