Competition is coming ... again

Discussion in 'General' started by bwilson4web, Aug 19, 2020.

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  1. marshall

    marshall Well-Known Member

    I find these numbers hard to believe compared to the insideevs test. I would like to see how you came up with those numbers.
     
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  3. I am a little surprised with these numbers as well. Here in Canada my major highway charging option is Petro Canada at 33 Canadian cents per min, using their 250 kw DC chargers driving 100 miles on the highway with my Kona at 65 mph( assuming an average consumption of 4 miles/ Kw) in the summer would roughly cost me around $7.20 Canadian or $5.33 U$ ( again assuming optimal charge rate with a SOC lets say from 5-60% and optimal charge temperature above 25C) Canadian dollars and if I could get 19 Canadian cents per minute charge rate I am figuring $5.20 Canadian $ or $3.80 U$ per 100 miles would be my cost.
     
  4. cmwade77

    cmwade77 Active Member

    Not hard, I seem to be getting a minimum of 300 miles to a 80% charge. A charge from 0 to 80% is running me around $3.00 on EvGo, divide by 3, you get $1 per 100 miles on a 75+kw EvGo charging station.

    Electrify America using the special Hyundai Plan is running me around $7.50 for a charge, again divide by 3 and you get $2.50 per 100 miles.

    Now both companies tend to give me free chargers when there is an issue, which further brings the price down, but I ignored those for purposes of these calculations.

    How did I get those dollar amounts? It's what each of them are charging me.....lol
     
  5. I'm not sure how that's actually working. As for Electrify America: $7.50 for a charge from 0% SOC to 80% SOC? They charge $0.35 per minute.

    7.50 / 0.35 is 21.4 minutes for a 0-80% charge?

    Correct me if my calculations are wrong but what kind of Kona are you driving? Are you back from the future?

    Even for a 20-80% SOC charge you need about 40 minutes. That's at least my experience.
     
    electriceddy likes this.
  6. cmwade77

    cmwade77 Active Member

    I don't know, but I am not going to question less than it should be.

    Of course this also doesn't factor in the fact that I have free DC quick charging near my work.
     
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  8. Don't get me wrong. I love my Kona and wouldn't exchange it for a Tesla. There is to many things I prefer. Even if it is a little more expensive than a Tesla (supercharging) or the network is not as stable and widespread (yet).

    I think Teslas were amazing 4 years ago from a design point of view. I think they are boring looking. They definitely have advantages, no question. I love the tech. But the model 3 is terrible from a UI point of view. I hate the fact there is no physical buttons.

    I wish the Kona UI would be better too. But at least I can change wiper speed without talking or fumbling on a touchscreen.
     
  9. bwilson4web

    bwilson4web Well-Known Member Subscriber

    So this is a typical charge curve for my Tesla Model 3:
    250_kW_charge.jpg
    This is the invoice from the above SuperCharger session:
    • Tier 1 < 60 kW
    • Tier 2 > 60 kW up to my car limited 170 kW or SuperCharger max 120-250 kW maximum
    invoice_040.jpg
    Bob Wilson
     
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  10. gooki

    gooki Well-Known Member

    FWIW Tesla do have physical buttons. Two of them on the steering wheel :) Also if you haven’t driven one, do give it a go. I was sceptical at first, turned out to be the easiest car to dive/use/learn it’s advanced features.
     
  11. marshall

    marshall Well-Known Member

    His numbers don't make sense. It took Tom 52 minutes to charge and the cost was $26 without the Hyundai plan or about $18.20 if on the plan.

    See https://insideevs.com/news/430783/hyundai-kona-electric-0-80-fast-charge/
     
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  13. There are things I like about the Teslas, no question. But even Kyle from out of spec motoring /inside EVs types back and forth on the screen sometimes. So it definitely could be improved, and again, I do like physical buttons for certain things. (More than just two on the steering wheel)
     
  14. cmwade77

    cmwade77 Active Member

  15. marshall

    marshall Well-Known Member

    Tom's numbers make sense. At 4 miles per KWh, it takes 25 KWhs to travel 100 miles. His charger provided about 72 KW for most of the session.

    So divide 25 KWh/72KW and you get about .35 hours or about 21 minutes. He added over 50 KWhs and he wasn't able to get 72 KW for the whole session. So his numbers seem to be in the ball park.
     
  16. bwilson4web

    bwilson4web Well-Known Member Subscriber

    I don't know if there are different battery capacities between your car and the press car. However, the Tom Moloughney YouTube showed:
    • 66 kW at ~0%
    • 72 kW later at ~60%
    This is consistent with a constant current charge that as the battery voltage increases, the rate of kW increases. Afterwards, the rate of charge decreases on the way to 80%. What this means is the fastest charge rate occurs 0-60%. I see a similar pattern with my 2014 BMW i3-REx only it starts at ~44 kW and ends at ~48 kW.

    With my car, the charge rate slows down to ~80 kW in ~13 minutes (12 minutes charged.) I only needed 100 miles range which is why I stopped charging.

    Bob Wilson
     
  17. Here is the problem I think we are having with your #s. The Kona has a 64kw hr battery. It has a maximum dc fast charge rate of 77kw/hr. A 0% to 80% charge rate is charging 80% of the battery. 80% percent of the battery is 0.8 x64= 51.2 kwhr. Dividing by the charge rate of 77 kw/hr we get 0.66 hr multiplying by 60 min/hr we get 40 minutets. Given the Kona charge rate of 77Kw and a battery size of 64 kw hrs it is not possible to charge the Kona from 0%to 80% in less than 40 minutes and that the theoretical maximum. If we factor in ramp up and ramp down on each end of the charge it more like 45 minutes.

    So next time you charge, verify your starting percentage and start time and you ending percentage and end time and get back to us. (pictures would be nice)

    Because if your car charges that fast I want to know what modifications have been made so that I can charge my car that fast. It would sure make road trips nicer if I could double the charging speed.;)
     
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  18. The only thing I can think of is that he has the smaller battery version that exists in some parts of the world (not sure which ones)
     
  19. marshall

    marshall Well-Known Member

    I doubt the smaller battery is sold in California where he apparently lives.
     
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  20. cmwade77

    cmwade77 Active Member

    Nope, larger battery......who knows.....just works.......loving it, I drive a lot and still only spending about $30 a month charging. When I say a lot, I mean it, this weekend alone was about 300 miles.
     
  21. marshall

    marshall Well-Known Member

    Well you seem to have hit the jackpot, free charging, 19 cent per minute EVgo, and a lifetime warranty on the traction battery.

    If one asks, can they still get the 19 cents per minute charging from EVgo?
     
  22. cmwade77

    cmwade77 Active Member

    the .19 is for those that are considered "essential workers" and all you have to do is let them know you are one by sending an email to their support and they will give it to.you through the end of the year.
     
  23. interestedinEV

    interestedinEV Well-Known Member

    We have had so many Tesla Killers (Audi, Jaguar, Porsche, Ford, Rivian, GM) and we also have had as many also ran's. No one has come up with a vehicle with the features of the Tesla at the price point of Tesla. No one other than VW has a dedicated charging network. No one has pushed autonomous driving in sold to the customers cars like Tesla (Waymo may be ahead in the technology, but they want to keep to themselves and monetize it as a taxi service)

    For now all the so called competitors are paper tigers. Will the real Real Tesla killer stand up?


    upload_2020-9-7_16-23-58.png
     
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