ENPNewswire-13 April 2010-GM Doubling Size of Most Technologically Advanced Automotive Battery Lab in the United States; Bolsters GM's leadership in automotive battery technology and electrically driven vehicles, such as the Chevrolet Volt; $8-million expansion doubles size of Global Battery Systems Lab on the GM Technical Center campus in Warren, Mich., to 63,000 sq ft; Improves on-site safety, charging, engineering and manufacturing testing capabilities for all current and new battery cell, module and pack technologies(C)2010 ENPublishing - http://www.enpublishing.co.uk Release date- 12042010 - WARREN, Mich. - General Motors is doubling the size of the largest and most technologically advanced automotive battery lab in the U.S. to expedite the development of electrically driven vehicles for consumers.