I was just reading that the 12 Volt Lead Acid Battery for the ICE Starter and auto Accesories is chaged from the Plug-in Circuit, that if the Vehicle is left unplugged this Battery can go dead. So if the 12 Volt Lead Acid Battery is charged during the HVB charging, it may account for the discrepency you are finding on how much Power your are using with the 120 Charging. Not sure why using the L2 Chager would be any different. I also read on this forum that this 12 Volt Lead Acid Battery is rated at 380 AHs, Amp Hours. I tried to fin this info on the Ford Web Site to no avai. Can someone go into to their Truck and check the Rating that is marked on the 12 Volt Lead Acid Battery please so we can try recheck some Calculations. I have not purchased the Ford Fusion Hybrid Energi yet so I can not check anything on it. Would be appreciated and helpful I believe to all reading this Thread if someone that has the L2 CHarger could let us know what the Voltage Potential is at the Plug end. The Wall Plug Cable should Have 120 VAC Potential at the Plug. Also wonder what Voltage the 7.6Kw LiOn Battery is rated at, was ready that most Hybrid Battery Packs are rated at 300 VDC, but again have not found any info on this as of yet.