Over 135 DC fast charges and no noticeable degradation

Discussion in 'Hyundai Kona Electric' started by BlueKonaEV, Feb 23, 2021.

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  1. BlueKonaEV

    BlueKonaEV Well-Known Member

    I just counted all my fast charging sessions (varying amounts of charge from 3kwh to over 50kwh) and I have fast charged over 135 times since June 28 2019, mostly at 50kw chargers and yet, I have no noticeable degradation yet.. However, I rarely charge past 90% and I rarely drop below 10%..
    I have only charged at chargers > 50kw 3 times...

    It's mostly my addiction to free juice that makes me use DC fast so frequently.. If I couldn't charge on them for free, I would be charging at home most of the time.
    Esprit1st and R P like this.
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  3. GeorgeS

    GeorgeS Active Member

    How did you measure degradation? 135 charges at under 50Kw s is good. What kind of temps do you live in?
  4. BlueKonaEV

    BlueKonaEV Well-Known Member

    I'm in Florida, so most of the time, temperatures are between 60F/15C and 94F/35C..
    I use to methods to estimate range..
    1) GoM range with my typical use
    2) when charging, I look at the % I added (for example, if I add 50% of charge, I look how many kw I have added)
    So, if I add 50% of charge and it shows that I added 35kw, then I subtract estimated losses (if battery cooling comes on, I subtract 10% on a 50kw charger and if battery cooling does not come on, I subtract 7%). 35kw - 7% = 32.5kw.. To get to 100%, multiply by 2... 65kw...
    This is not a 100% accurate method but it's close, especially on a charge that covers let's say 70%..
    Based on my math, I'm very close to 64kw every time that I calculate it..

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