From the Detroit News:
Prototype battery blamed in explosion at GM's Tech Center
General Motors Co. said a Wednesday explosion at a battery lab in the General Motors Technical Center that seriously injured one person was unrelated to the Chevrolet Volt or any other production vehicle, but was related to "extreme testing on a prototype battery."
Four others were evaluated after reports of a lithium battery exploding at a battery research lab at the GM Tech Center. GM declined to confirm the type of battery involved in the incident.
Warren Mayor James Fouts described the injury to the hospitalized worker as being serious. Fouts was in his office when he received a call about the explosion....MORE