A123 Systems (AONE) officially files for bankruptcy protection. The electric car battery maker...

|About: A123 Systems, Inc. (AONEQ)|By:, SA News Editor

A123 Systems (AONE) officially files for bankruptcy protection. The electric car battery maker warned last night it might file for bankruptcy after defaulting on a loan payment. It remains to be seen how the filing affects A123's financing deal with China's Wanxiang Group. Shares -50% to $0.12.