GM's Brownstown Battery Assembly expands; building new battery system for 2015 Chevrolet Spark EV - Green Car Congress
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Opel Ampera-e Has NEDC-Rated Driving Range of 500 Km, 380 Km in Real-World Conditions | DriveMag Cars
GM Exec: Gen 3 Voltec Battery to Have Shortened Lifespan, Simpler Shape, and be Offered in Smaller Ranges | GM Volt Forum
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