Battery builder A123 Systems that won $249 million federal grant files for bankruptcy



The Massachusetts-based company was supposed to become the leading home-grown supplier of lithium-ion batteries for automakers in the United States and around the world -- fueled in part by a $249 million grant from the Obama administration. Today, A123 Systems filed for bankruptcy, saying much of its assets would be sold after losing $857 million over the past several years.



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