I don't have the inclination to provide data for everything (s)he said, but I have personal experience with charging efficiency and this study coincides with it...
* 80%-90+% efficiency when charging at a rate higher than 2kW (L2/240V) depending on rate of charge and climate.
70%-85% efficiency when charging below 2kW (L1/120V charging)
My Chevy Volt has 10.7 kWh usable battery and based on OnStar data it takes roughly 12-13kWh to recharge. That's 82-89% efficiency, which perfectly matches the study's findings. Unfortunately the Volt only charges at a maximum rate of 3.3kW. A 6.6kW charger would get efficiency well into the 90s.