About a month ago now, had to have the battery replaced under warrantee on the 2013 XLT with about 18 months service. Dealer said it failed the tests, equated it to a bad or dying cell, which would not hold a full charge.....I've seen other threads relating similar battery problems with some EXP's ,Edge, etc. Dealer mentioned Ford got a run of bad batteries a while back and are showing up at various times....I'd keep an eye on yours. The clue for me was every time I put the key in and turned it on, just short of starting, the battery system warning came up and started shutting down the electric system. Also the outside keyless entry pad would not function properly without several tries....best regards Plum