I'm going to be on a road trip, one of my stops will be at a ChargePoint for 2 hours @ 6.6 kW, giving me 13.2 kWh of charge. How many miles will this get me in my Tesla Model S 75D?
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at an L2 charger 18 miles per hour would be about the best you could expect to get. L2 charging for me is only for extreme emergencies and overnight stops. if there are SpCs along your route I would use those before using an L2I'm going to be on a road trip, one of my stops will be at a ChargePoint for 2 hours @ 6.6 kW, giving me 13.2 kWh of charge. How many miles will this get me in my Tesla Model S 75D?
After around 13000 miles, I find my average usage is around 310wH/mi. Rarely could get 270 (assuming average highway speed of 75) without a good tailwind or no uphill at all. So I would figure 13,200/310 = 42+
Yup, I've got over 30,000 miles on my car, don't expect to get anywhere near 270kW/mi. I'm hovering closer to 300 kW/mi.
Rather than display the ideal or rated range, what might be interesting would be a 3rd option - predicted range, which could be the range based on recent driving energy consumption (last 1000 miles?). That might be much more interesting to have than using the rated or ideal ranges, which likely don't reflect most people's driving habits (either higher or lower).
On the epa document for the model 3, they had to use 89.404 kwh to charge the car to it's capacity of 78.270 kwh. So only about 87.5 % of the energy makes it into the battery. 13.2 kwh * 0.875 = 11.55 kwh into the battery.
Subtract 2.1 wh per foot increase in altitude from the 11.55 kwh. Add 1.85 wh (1.6 wh if using regen) per foot to the 11.55 kwh if you are losing altitude. So if your destination is 1000 ft higher, you would subtract 2.1 kwh from the 11.55 kwh. Then your range is the kwh divided by the kwh per mile for your chosen speed.
For level ground, no a/c and no wind, this is the range for various speeds.
MPH, KW, KWH / mile, Miles
55, 11.8147, 0.2148, 53.7679
60, 14.2318, 0.2372, 48.6938
65, 16.9874, 0.2613, 44.1945
70, 20.1080, 0.2873, 40.2079
75, 23.6200, 0.3149, 36.6744
80, 27.5500, 0.3444, 33.5390
For the case where you gain 1000 ft in altitude and are driving at 70 mph:
11.55 kwh - 2.1kwh = 9.45 kwh
9.45 kwh / 0.2873 kwh / mile = 32.9 miles
This is great. Thank you.
On the last line I think you made an unit error stating 0.2873 kWh/mile. It should be wh/mile.
Also, can you tell me how you arrived at an efficiency of 0.2873 wh/mile? For S85 or 75M3?
Rather than display the ideal or rated range, what might be interesting would be a 3rd option - predicted range, which could be the range based on recent driving energy consumption (last 1000 miles?). That might be much more interesting to have than using the rated or ideal ranges, which likely don't reflect most people's driving habits (either higher or lower).
You actually have something like that from the graph of the consumption of the last 10, 25, 50 km. The number is written at the right of the graph, which already gives a good idea. Could ask Tesla to add more distance options.
's 287.3 wh/mile or 0.2873 kwh/mile.
No problem, and you're welcome.Oops my bad.
Thanks for all your detailed analysis. Appreciated.
You get that on the center display when you display efficiency.I would like to see a predicted range option!