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BENSALEM, Pa.--([ BUSINESS WIRE ])--Law Offices of Howard G. Smith, representing investors of A123 Systems, Inc. (aA123a or the aCompanya) (NASDAQ:AONE), has filed a class action lawsuit in the United States District Court for the District of Massachusetts on behalf of a class consisting of all persons or entities who purchased the common stock of A123 between February 28, 2011 and March 23, 2012, inclusive (the aClass Perioda).

A123, together with its subsidiaries, designs, develops, manufactures and sells rechargeable lithium-ion batteries and energy storage systems worldwide. The Complaint alleges that the defendants issued materially false and misleading statements concerning the Companyas operations and financial prospects. Specifically, defendants made false and/or misleading statements and/or failed to disclose that: (1) the Company had severe manufacturing deficiencies at its Livonia, Michigan, manufacturing facility, which produced defective prismatic cells that resulted in premature failure of battery modules and packs; (2) as a result of the defective prismatic cells, A123 would likely be required a" and incur substantial costs a" to recall and replace the affected modules and packs, threatening the financial viability of the Company; and (3), as a result of the foregoing, the Companyas statements were materially false and misleading at all relevant times.

No class has yet been certified in the above action. Until a class is certified, you are not represented by counsel unless you retain one. If you purchased A123 common stock between February 28, 2011 and March 23, 2012, you have until June 1, 2012, to move for lead plaintiff status. To be a member of the class you need not take action at this time; you may retain counsel of your choice or take no action and remain an absent class member. If you wish to discuss this action or have any questions concerning this Notice or your rights or interests with respect to these matters, please contact Howard G. Smith, Esquire, of Law Offices of Howard G. Smith, 3070 Bristol Pike, Suite 112, Bensalem, Pennsylvania 19020, by telephone at 215-638-4847, Toll-Free at 888-638-4847, by email to [ howardsmith@howardsmithlaw.com ] or visit our website at [ http://www.howardsmithlaw.com ].