No, that claim is highly inaccurate. I'm guessing that it's somehow related to the part of a talk that was widely quoted (also by mainstream media):
Shai Agassi, the founder and former CEO of Better Place, also touted
the importance of the rate of battery innovation during his talk at
the Cleantech Investor Summit. He said the energy density of batteries
goes up 15 percent every 18 months; the cost per kilowatt hour goes
down 15 percent every 18 months; the life cycles of the batteries (how
many times it can charge and recharge) goes up 15 percent every 18
months; and the cost per lifecycle-mile does down 50 percent every 18
months. “If you don’t like the margins in this [electric car] business
just wait 12 months,” said Agassi.
Thus this directly contradicts both claims about the cost and how long they last. I don't really know what "cost per lifecycle-mile" is supposed to mean.