- First Name
- A. J.
- Dec 8, 2019
- Reaction score
- Tesla X LR+, Lexus SUV, Toyota SR5, Toyota Landcruiser
- EE (Retired)
As I have been stating clearly and as the data say for themselves - just not as much as you seem to think.That's incorrect. The C rate depends upon the state of charge (and other factors).
It's hardly arbitrary. It is where most operate. That's the value of the ROT. There is a reason the region below 20% is marked in warning yellow on the energy display. I assume that most people respect that.The fudging is arbitrarily picking 20%-80% when I continue to tell you I charge from 10%-60% (which is well above 1C).
So you repeatedly tell me that you operate in the 10% to 60% region and I have always accepted that and explained the benefits of charging in that region. I know what the rate is. Can you, from your own data or experience, tell me what that rate is?
And most don't. Again you miss the whole point of this. While your personal preferences and practices are certainly of interest we mustn't assume that all drivers operate the way you do. I don't have any reason to suppose that I am atypical but, of course, I wouldn't assume that all drivers operate the way I do. FWIW the statistics on my super charging are:And a lot of experienced long-distance EV drivers charge like this whenever possible.
Charge taken on: V_avg= 44.2727; V_sdev= 19.1942.
Starting SoC: V_avg= 29.2727; V_sdev= 12.3862; V_min= 16
Terminating Charge: V_avg= 73.5455; V_sdev= 17.7841; V_max= 90
Time to Charge: V_avg= 28.1818; V_sdev= 13.1287; V_min= 5; V_max= 43;
Charge Rate: V_avg= 0.980811; V_sdev= 0.167247
Thus the average charge I took on was 44% and the average time it took to do it was 28 minutes. Seems as if the rule of thumb is pretty good. The average rate was 0.98C. When I charge up to 90% it drops to 0.78C and when I charge to 29% (I don't know why I did that but I did) it goes up to 1.32C. Now those are respectively 2.5 standard deviations over and 0.9 standard deviations under the mean. If you "speak the language" you will understand the significance of that. Note that n = 11 which isn't huge.
Now just as I don't always charge from X% to Y% I am confident that you don't always charge from 10% to 60% so that's why I keep saying let's see your data. So let's see your data. Please.
There is, as I said in the previous post, little point in installing a 200 kWh battery that is capable of accepting an average 2C charge if you don't have a charger that can support that. A 250 kWh charger will not support that.As far as the Cybertruck, yes, thqt's why Elon has said max Supercharger power levels will continue to increase. And none of us know what the exact chemistry or charging capabilities of the 4680 cells will be. While I expect the thermal capabilities to be similar to existing cells it's possible they won't taper as soon or as much. We will have to wait and see.
You are still dodging the questions as to how much faster a 3 will accept charge than an X and how you know that there are 30 - 40 miles range left when SoC indicates 0. I'd really like to know about those things. You also dodged the question as to whether the 3 charging data was taken by you.