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Cake day: November 1st, 2023

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  • I don’t think I’d use a wireless EV charger simply due to the efficiency loss, especially from a company with so few technical specs (easily accessible) on their site.
    Both from a financial perspective, but also that any energy lost to inefficiency is lost as heat.

    I mean, they mention their efficiency as:
    “Plugless is ~12% less efficient than corded L2 30amp 240V charging systems and ~7% less efficient than corded Level 1 charging systems.”

    What does that mean?

    12% higher losses? eg. 88.88% efficiency Versus a 90% baseline?

    12% reduction in efficiency? eg. 79.2% efficiency versus a 90% baseline?

    12 percentage point reduction? eg. 78% efficiency versus a 90% baseline?

    Or something else entirely.



  • Insurance varies a lot; I pay about the same as I did for my Hyundai i20, for the same level of coverage.

    “Supercharging is still not cheap: while still being 50% cheaper than gas, its not cheap. I see 50c/kwh near my area. And not everyone has a home to charge”

    This is a big part of the equation; DC fast charging is expensive, period.
    Over here (Denmark) It can be 2-3x base electricity cost.
    Add to this, that vehicle consumption varies a lot from car to car.
    I have a Model 3; If I had had something like a Ariya instead, my consumption would be around 27% higher for the same miles.

    So, always DC fast charging on a Nissan Ariya, would cost barely 4x as much as always home charging a Tesla Model 3.

    My experience with 30-35% Supercharging and the rest Level 2 (usually paying what amounts to half to 3/5 of supercharging costs) is that my “fuel” costs are around 40-50% of what they were for my old Hyundai i20

    In any case, the financials were only a motivator insofar that my monthly cost of having a car wouldn’t be more than they were with the leased i20.
    They’re not, actually saving barely 10% per month.

    Primary motivator was that our Lease was up and we either had to start a new lease or buy, and I would not buy unless it could be EV for various reasons.

    if you’re looking at it purely from a financial perspective, why buy a $40k EV, when you can get an used ICE for $1-2k and replace it when it dies in a year or two, get 20 years worth of car for those $40k, and have the difference invested in the meanwhile making the car “free”


  • We (Denmark) have quite a few business and private people who set up level 2 chargers and make them publicly available, at a cost that’s either static or based on current utility prices plus a mark up.

    Generally I think they’re profitable, but it’s a long term ROI; depending on mark-up (which would depend on local availability, and location) ROI is probably reached at 5-14000kWh, so roughly 450 to 13000 hours of charge time, based on $1200-2000 for the box and installation.

    How long that ROI would be in real time would of course depend on actual utilization.

    There are of course also the sly business’, like a tourist attraction where the best parking spots are reserved for EV charging and they charge ~$0.8/hr on a 7.4kW outlet :p bet they’re making bank.


  • Don’t think you’ll get a useful answer years out.

    Here in Denmark, 2 years ago, there were 336 individual Superchargers.
    Meanwhile, we had 243 third-party DC fast chargers.

    Fast-forward 2 years and we’re at around 430 Individual Superchargers, with another 36 currently on the way.
    Meanwhile, the number of third-party DCFC has risen to barely 1400, with a couple of hundred on the way.
    And that’s on top of the barely 14,000 public AC chargers.

    So yeah, two years has been enough time for the charging infrastructure to triple and then some.



  • I’d say No.
    It has an average real-world range of 160-ish kilometers, closer to 110 in cold weather and highway speeds (or other extra draining modes of driving)

    “fast” charging runs 29kW average (40 min for 10-80%, eg. for 77 to 110km of range), and AC charging peaks at 6.6kW (4.5 hours 0-100%), regardless of one or three phase outlet.

    You’re looking at charging the car fully before leaving for Val D’isere and charging it fully before going back, and you’ll probably be cutting it close even then.

    I’d say I would only use it for city driving, but it’s 1-star Euro NCAP safety rating would probably keep me from even doing that.