By 2013, automakers will have dozens of plug-in electric hybrid vehicles and fully electric vehicles, said Jason Forcier, a vice president at battery maker A123 Systems Inc.
Battery pack costs should fall from $750 per kilowatt hour today
to under $500 by 2013 and by 2016 around $350.
Half of the cost reductions will come from big volume increases and half through innovations.
"That's $6,000 to $7,000 per battery pack" in 2016.
He said the average payback of an electric vehicle could be less than three years in most markets.