Battery maker A123 quietly became a half-billion-dollar company

A123 Systems manufacturing facility, Livonia, MichiganTen years ago, lithium-ion cell maker A123 Systems was a hot startup and a much-publicized company. This author, in fact, profiled the company for IEEE Spectrum in the technology magazine's September 2007 issue. The six years that followed proved enormously painful for the Massachusetts company, however. DON'T MISS: A123 Systems To Recall...