acdii Report post Posted April 21, 2014 My 2013 FFH 12v battery went dead again last week. I left the car at the airport for 6 days, and it was dead when I returned. This was after a 45 minute highway drive to the airport. Everything turned on instantly (lights, etc), when the airport service person hooked up a battery pack, and the car started right up. I'm still getting the battery saver message every time I shut off the car (except for immediately after my 45 minute drive home). Whatever Ford suggested that my dealer service technicians try, it was clearly a blind shot in the dark.If you haven't already get Ashley involved. These batteries don't go dead in 6 days unless something is drawing power. The dealer needs to tap the battery and see how much of a draw the system is using when the key is off. If they haven't replaced the battery, it should be. These aren't THAT complicated! In fact, it is no different than any conventional car, the 12v system is a 12v system, Battery provided 13.5 Volts, turn on key, battery powers up the car. only real difference is this battery doesn't turn a starter motor, and the car uses a converter to charge it instead of an alternator. Load test the battery, load test the charging system, check current draw. 1 hybridbear reacted to this Quote Share this post Link to post Share on other sites