Automotive News reports General Motors will bring production of the Chevrolet Spark EV’s battery pack in-house to its Brownstown Township plant in the Detroit metro area, having already moved the subcompact’s 85-kilowatt electric motors to White Marsh, Md. in 2013. The pack was originally assembled by A123 Systems before Wanxiang Group picked up the torch. No new jobs will be created as a result of the move, spokesman Dave Darovitz stating GM would add jobs “if consumer demand requires it.” The packs for the 2015 Spark EV — whose market will expand to include California and Oregon later this year — will be 86 pounds lighter than the outgoing units, and will have a storage capacity of 19 kilowatts held within 192 lithium ion cells.

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General Motors announced Tuesday that it would invest $449 million into the two plants responsible for assembling the Chevrolet Volt in preparation for the next generation of the plug-in hybrid’s arrival in 2016.

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