Attorney Advertising--Bronstein, Gewirtz & Grossman, LLC is investigating potential claims on behalf of purchasers of the securities of A123 Systems, Inc. (“A123” or the “Company”) (NasdaqGS: AONE -News), concerning whether the company and certain of its officers and directors have violated federal securities laws. On Monday, March 26, 2012, Shares of A123 fell 21 cents or 12% and closed at $1.49 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. The $55 million represents as much as one quarter of this year's projected revenue, which A123 has estimated between $230 million and $300 million. Five auto customers received parts that could have had defective cells, A123 CEO David Vieau said. The company lowered its full-year revenue outlook late in 2011 after carmaker Fisker Automotive, cut orders for A123's battery packs. According to one analyst, he estimated that battery sales to Fisker accounted for about $40.7 million of A123's $159.1 million in total revenue in 2011. A123 Systems 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 extra costs come as A123 Systems has been spending beyond its revenue. It went public in September 2009 and has yet to turn a profit. The company has sufficient liquidity to pay for the replacements, but said the company will likely adjust its fund-raising strategy because of the additional cost, Vieau said. If you are aware of any facts relating to this investigation, or purchased shares of A123, you can assist this investigation by contacting either Peretz Bronstein or Eitan Kimelman of Bronstein, Gewirtz & Grossman, LLC at 212-697-6484 or via email email@example.com. Those who inquire by e-mail are encouraged to include their mailing address and telephone number. Bronstein, Gewirtz & Grossman, LLC is a corporate litigation boutique. Our primary expertise is the aggressive pursuit of litigation claims on behalf of our clients. In addition to representing institutions and other investor plaintiffs in class action security litigation, the firm’s expertise includes general corporate and commercial litigation, as well as securities arbitration.