So, I went away for a week, I left the FFE fully charged and plugged in to my ChargePoint Level 2 charger. 24 hours out I started getting these messages about plugging in because the 12 volt battery needs to be charged.
I called my bride and asked her to check the car. She told me the key would not allow her entry and had to take out the metal entry key to open the car. Nothing was working. I asked her to remove the plug, reattach to the ChargePoint, swipe the card and reinsert into the car. Nothing happened. At that point and thanks to this forum, I realized the 12 volt was dead. So she left it alone. (Thankfully, I took my gasser to the airport.)
Upon returning, I disconnected the 12 volt battery terminals and attached my trickle charger. As soon as the battery was charged, I reattched the terminals and bingo everything lit up. I started the car and the main battery was fully charged.
My question is - Why did this battery lose it's charge? I drive this car everyday. I charge it twice per day. There are no gauges showing 12v battery charge, no indication of a low charge other then the text messages I received, too late to address the problem. What if I had taken it to the airport? How do I prevent this in the future? I read the owner's manual and found no information other that how to jump start the battery. Really... Jump start an 8 month old car????
2012 Ford Focus Electric. Delivered 5/29/2012