CNET News: General Motors opened the doors to a battery research and development plant in Michigan on Monday, a facility the company says will accelerate its move to electric vehicles.The Global Battery Systems Lab in Warren, Mich., will be used to test the lithium ion batteries planned for the Chevy Volt as well as other energy storage systems such as ultracapacitors, GM said.The facility, at 33,000 square feet, is four times larger than GM’s existing testing operation and will be used by 1,000 engineers, according to the company which hosted a ceremony with Michigan governor Jennifer Granholm and GM CEO Fritz Henderson.