TonyWilliams
Well-known member
surfingslovak said:If memory serves, Tony asked for a battery temperature capacity coefficient. Jim has done an awesome job, and perhaps he will find some time to implement this in the future. In the meantime, I wouldn't trust the app blindly. It's amazing and provides so much information, but not all of it has to be 100% correct.
Here's a repost on this subject from the "other" thread:
Turbo3 said:1) DTE is based on the current selection and remainng GIDs. For LBW that would be (remaining GIDs-49)*0.08*(miles/kWh). For VLBW change the 49 to 24. For DTE to "rsrv" it would be ((remaining GIDS*0.08)-Reserved energy in kWh)*(miles/kWh). There is no way to show DTE with no reserve since the lowest reserve is 0.2 kWh.TonyWilliams said:Turbo3 said:Max charge on a new battery is reported to be 281 GIDs which would be 22.48 kWh.
1) Is the app showing a DTE (when 4 miles per kWh is selected) of 4 * 22.48 = 89.9 miles with no reserve?
2) Would it be possible to add temperature corrections, since you have the temperature data?
Ok, that's what I thought you were doing. For the record, I have never driven any LEAF of the dozens that I have tested to Turtle (and even my own car about two dozen times to Turtle) that met the 0.08kWh per GID times miles/kWh = range autonomy in miles. I don't know of anybody short of Nissan that has done this as many times as I have in so many controlled drives. Yes, I know what the Nissan book says a GID equals.
No sane driver is going to get to 0.2kWh remaining, so could we make the minimum reserve higher... maybe 0.48kWh? (6 Gids). It really is time to get off the road and the car will very likely be in Turtle, or very, very close to Turtle. Yes, I know what cell pair voltages are.
2) Just change your miles/kWh to adjust for temperature. There are no plans to make any auto adjustments based on temperature.
How would a technically disinterested person know to do that, or how much to "adjust" for? Heck, I wouldn't know how much to adjust for without some good number crunching, and I'd say that I'm pretty adept at this stuff. How much would you adjust the miles/kWh with a car cold soaked at -10F versus one at 70F?
Even more confusing would be that any adjustment would vary significantly from the readout on the dash. For the record, I do appreciate that you included a reference to DTE in the way I suggested it earlier. I'd just like it to be the best that it can be.