The Dead battery issue finally hit me. After leaving our 2014 Fusion Hybrid Energi for two weeks with the charging cable connected and working, we came home to a completely dead battery. Read all the user comments in this forum, but, I am not seeing any comment about why would the 12 battery go dead when the vehicle's charging port is connected. I am not expert here, but I have been around the block with batteries in my time. I'm guessing that the charging port only manages the voltage of the HV batteries and does not supply maintenance charge to the 12v, I also suspect there are some equipment i.e HV cooling fans or ? that are drawing pwr from the 12v. I can think of no other reason why the 12v system would die over time when the car is plugged in. Looking forward to comments from readers
