Traverse City Record-Eagle

Business

March 27, 2012

Battery maker to remedy possible defect

WALTHAM, Mass. — Shares of A123 Systems tumbled by double digits to an all-time low Monday after the maker of batteries for electric cars estimated that it would spend about $55 million to replace battery modules and packs that might be defective.

Because of the problem, customers' battery equipment could fail early. But the defective equipment does not pose a safety threat, A123 said. Five auto customers received parts that could have had defective cells, CEO David Vieau said Monday.

A123 Systems, based in Waltham, Mass., expects to start shipping replacement packs and modules to affected customers this week. It will pay to replace the equipment over the next several quarters. The company would not identify which customers are affected. But A123's biggest customer, Fisker Automotive, said it would replace the battery packs for its customers.

A123 said the affected equipment was limited to products made in its factory in Livonia.

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