This wiki is s summary of my Model S Charging findings first covered in this thread: What is the Most Efficient Charging Amperage? In short, I am measuring the kWh required by my car to charge to 90% at various amperages, temperatures and battery discharge states and I'm looking to discover if there is an amperage that uses fewer kWh per Ideal Mile charged. My findings are that there is no statistically significant difference in the parameters tested so far (but the experiment continues). Data Sources: - kWh: Powerhouse Dynamics SiteSage - Charging Times & Mileages: VisibleTesla - Charging: Tesla HPWC (80 amp) Observations: - 40 Amps does appear slightly worse than other amperages, but I believe there's an outlying sample that will wash out with more data. Summary Table by Amperage Summary Amps# SamplesMin kWh/IdealAvg kWh/IdealMax kWh/IdealStdDev kWh/IdealAvg Minutes/Ideal2010.2860.2860.286#DIV/0!3.44030.2920.2950.3030.0061.86040.2780.2850.2970.0081.18030.2640.2840.2980.0180.9Grand Total110.2640.2880.3030.0111.4 Summary by Amperage and Percentage of Battery Charged (rounded to 10%, assuming Max Ideal of 300 miles) Deciles Amps# SamplesMin kWh/IdealAvg kWh/IdealMax kWh/IdealStdDev kWh/IdealAvg Minutes/Ideal2010.2860.2860.286#DIV/0!3.4 6010.2860.2860.286#DIV/0!3.44030.2920.2950.3030.0061.8 1010.3030.3030.303#DIV/0!1.9 4020.2920.2920.2920.0001.86040.2780.2850.2970.0081.1 2020.2780.2810.2840.0041.1 3010.2970.2970.297#DIV/0!1.1 4010.2830.2830.283#DIV/0!1.18030.2640.2840.2980.0180.9 3010.2980.2980.298#DIV/0!0.9 5020.2640.2770.2900.0180.9Grand Total110.2640.2880.3030.0111.4Summary by Ambient Outdoor Temperature at Charge Start (Rounded Down to Nearest 10 degrees F) Deciles Temp F# SamplesMin kWh/IdealAvg kWh/IdealMax kWh/IdealStdDev kWh/IdealAvg Minutes/Ideal 40 4010.3030.3030.303#DIV/0!1.96020.2830.2900.2970.0101.1 50 4020.2920.2920.2920.0001.86010.2840.2840.284#DIV/0!1.18010.2900.2900.290#DIV/0!0.9 60 2010.2860.2860.286#DIV/0!3.46010.2780.2780.278#DIV/0!1.18020.2640.2810.2980.0240.9 Grand Total110.2640.2880.3030.0111.4Summary by Normalized Time (Time to Gain 1 Ideal Mile Normalized to 80 Amp Charge) Norm Minutes Temp F# SamplesMin of Norm Min/IdealAverage of Norm Min/IdealMax of Norm Min/IdealStdDev of Norm Min/IdealAvg Minutes/Ideal2010.840.840.84#DIV/0!3.44030.870.910.940.0331.86040.840.850.860.0101.18030.860.870.890.0160.9Grand Total110.840.870.940.0331.4