(Transcribed from 2010 Edge - Battery)
03/08/12 - Have 2010 Edge AWD LMTD, w/17,635 miles. Dealer (Lakeview Ford, BC, MI) dead battery changeouts at 8,572 miles - 17 January 2011, and 17,618 miles - 07 March 2012. Warranty work. That's three batteries, counting the factory original, to date.
Update: 21.4K miles as of 7/16/12. No problems noted thus far. Also, the last battery the dealership installed carries a CCA rating of 650.