Range is increasing

Discussion in 'Hyundai Kona Electric' started by MikeP, Jun 5, 2020.

To remove this ad click here.

  1. I've seen those quick GOM changes in other cars too. The Kona seems a bit more subtle. The biggest and most instantaneous changes with the Kona GOM seems to to upon activation of heat or AC. Actual changes prompted by acceleration or other loads seem more subtle. Changes appear over a longer time span.
     
    Bruce M. likes this.
  2. To remove this ad click here.

  3. FloridaSun

    FloridaSun Well-Known Member

    Based on my experience (about 30k miles with the Kona), it appears that the Kona keeps track of your driving habits. I'm not sure how many miles are used to calculate the average but I would estimate that it takes the average of 400 to 500 miles.. One thing that it seems to do for sure is that it always re-calculates the average as you keep driving.. Let's say hat the car averages 500 miles for the GOM. If the first 100 miles in your 500 mile average were let's say 3.5 mi/kwh and you drive 100 miles at 5.5 mi/kwh, your range will suddenly jump up a lot. However, if the first 100 miles in the 500 mile average were a 5.5 mile average, you will see no difference in range even if your average at that point was 4.5 mi/kwh. I'm not sure if I'm expressing my observations in an understandable way.. The reason why I believe that it works this way is because sometimes, my GOM shows like 240 miles at 80% and then I drive 100 miles at 5.6 mi/kwh (which translates to more than 240 miles range at 80%), sometimes my GOM went actually down.. Sometimes, the opposite happens.. Sometimes I have about 250 miles range at 80% and then I drive 100 miles at 4.1 mi/kwh and surprisingly, my 80% went up.. The only way to explain is that the distance of 4.1 mi/kwh is replacing was lower than 4.1 mi/kwh and therefore the range went up.
    Let me give you one example: 500 mile averaging period.
    100 miles on 6/1 at 3.9 mi/kwh 25.64 kwh used
    100 miles on 6/2 at 5.6 mi/kwh 17.85 kwh used
    100 miles on 6/3 at 5.0 mi/kwh 20 kwh used
    100 miles on 6/4 at 4.0 mi/kwh 25 kwh used
    100 miles on 6/5 at 5.5 mi/kwh 18.18 kwh used
    -------------------------------------------------------
    500 miles driven, 106.67 kwh used, average of 4.687 mi/kwh * 64 kwh = 299.96 range at 100%

    Now if I drive on 6/6 for 100 miles at 5.6 mi/kwh, I'm replacing the 100 miles on 6/1 at 3.9 mi/kwh, so we subtract 25.64 from the average and add 17.85. So, now the average for the last 500 miles becomes calculated with the new total of 98.88 kwh for 500 miles which now translates to an average of 5.056 mi/kwh.. Multiply by battery size of 64, the 100% range will now be 323.

    Now, if you drive 100 miles on 6/6 at 3.9 mi/kwh instead of 5.6 mi/kwh, your 500 mile average will be unchanged as you are replacing a period of 100 miles @ 3.9 mi/kwh with another period of 100 miles @ 3.9 mi/kwh.. So, even though you drove 100 miles at an average below the 4.687 mi/kwh you originally had, your range won't drop as the 100 miles that your are replacing were also at 3.9 mi/kwh.. I hope that this makes sense.. As I said, this is the only conclusion that I came to to explain why sometimes, I drive quite a distance below my GOM average and yet, my range stayed the same or even went up. The only way that this could happen that it is a rolling average where the latest distance travelled replaces the oldest one in whatever distance it averages.
     
    John Lumsden and electriceddy like this.
  4. Bruce M.

    Bruce M. Well-Known Member

    Interesting theory from BlueKonaEV. I don't have enough time with the car to know if it fits my experience. I would love to know how the algorithm works, though it's clearly different from my Honda's, which was definitely making on-the-fly adjustments for short term changes in driving style or circumstances (and which often caused it to produce readings which I knew would not match reality).
     
  5. FloridaSun

    FloridaSun Well-Known Member

    My wife's BMW i3 adjusts range pretty quickly if driving conditions change. Drove the car in the morning for about 40 miles around town at 5.7 mi/kwh and then charged to 99.5% at the place where I had lunch.. The GoM showed 165 mile range. Drove home 5 miles and the GoM showed 160 miles range. Then my wife took my daughter to her Piano classes and got an average of 3.5 mi/kwh as she runs the AC at full blast and does not use ECO Pro mode. When she got back after driving just 16 miles, the GoM dropped from 160 miles to 95.
     
  6. hieronymous

    hieronymous Active Member

    Heat or AC has no effect on mine, possibly because in my climate I prefer to open the windows!
    Biggest impact for my Kona GOM is from QC charging, though oddly AC charging makes no perceptible difference...
     
    Mike Bearsails likes this.
  7. To remove this ad click here.

  8. Stopped by a free DC charger today, upon reaching 84% SOC the GOM displayed 455 km (no other EV was waiting - 80% public charging etiquette).
    New record for me - translates to 541 km (336 miles) @100%
    Average consumption overall is at 121 Wh/km equaling 528 km (328 miles) based at 64 kWh capacity, which makes me super happy with those numbers including combined highway and in town driving.
    Kona EV is still the best range EV for the buck:)
     
    Last edited: Jul 28, 2021
    Mike Bearsails, mho, navguy12 and 3 others like this.
  9. FloridaSun

    FloridaSun Well-Known Member

    Except for high speed highway driving, the Kona gets more range than the Tesla Model Y Long Range. The Tesla does have and advantage over 60 mph, especially at 75 - 80 mph.. Around town, Kona efficiency is most unreal.. I do the same trips with the Tesla Model Y as I did with the Kona and except for road trips, the same trips take more battery % off the range than on the Kona. However, I did a 77 mph trip leg with the Model Y and only used 88% of charge on a 228 mile trip leg. At 77 mph, the Kona would not get that kind of range..
     
    Last edited: Jul 28, 2021
    1st-KonaEV-in-FL likes this.
  10. Returning home on our first long distance drive the GOM indicated we would arrive home with 50 km to spare. It was very windy, cold and wet and the GOM went down to 20km. Dropped our sped to 80km/h then 70km/h then 50 km/h and we arrived home with 10 Kms left and the car giving us range warnings.
    Since then we have done the trip again twice and have arrived home with 50 and 70 kms left. I have also modified the charge so we can draw 90% on fast charge.

    Obviously the GOM does regular recalcs.
     
  11. Howdy!
    We have had our 2023 Kona Ultimate now for 2 1/2 weeks. Have about 2300 km's on the clock, the GOM is still learning our driving but at 90% SOC (level 2 charger in our garage) it is showing about 458km. We have a trip to Toronto planned next weekend (about 400+ km trip each way) and then Florida in November for 10 days, then a trip to Southern Ohio for New Years Eve so we will be learning about the car pretty quickly. Of course GOM range will drop as our Temps drop over the winter.
    We absolutely love it so far and are extremely happy with the performance and comfort of "Berty" my 4 year old Grandaughter named her!
    Great information on this forum and want the Thank all of you for passing on your experiences.
    Thank you
    Mike
     
  12. To remove this ad click here.

  13. Addendum to above. Charged entirely through the day today. Temps above 15c for the first time this winter and gained 430 kms. previous best was 401 charging at night when power price is cheaper but temps below 10c. Looking forward to Summer, well.. early Summer. There's about a ton of mass to warm in the battery.
     
    Mike Bearsails likes this.
  14. Greetings Ferenc. Your post about your fast charging has me interested.

    Can you tell me how you were able to "modified the charge so we can draw 90% on fast charge."?

    Maybe I can modify my 2021 dc fast charge curve...
     
  15. He would have meant that the dash charge limit was set to 90%.
     
  16. KiwiMe is correct I adjusted it through using the car's setup system for battery charging. You can limit fast charging or allow 100%. It had been set to 80% which is my preferred scenario but was impractical for the distance we have to drive.
     
    KiwiME likes this.
  17. Oops. I misunderstood. I had hoped you were able to modify the "charge rate curve" to enable a higher charge rate once past the 80% point.
     
    electriceddy likes this.
  18. When you (or anyone for that matter) figure out how to accomplish this or even a marginally higher DC charge rate at any point along the curve, we will cheerfully await a follow up post here . :)
     

Share This Page