I read extravagant possibilities more frequently I guess (e.g. NASA Tech Briefs and EE Times trade journals).
Where are my AA batteries powered by Toshiba's "Super Charge" technology, announced in 2005 --
http://www.toshiba.co.jp/about/press/2005_03/pr2901.htm ?
They are supposed to charge to 80% capacity in one minute (!), still have 20% capacity at -40 C (!), and only lose 1% of capacity after 1K charges (!).