Kona is Good but...

Discussion in 'Hyundai Kona Electric' started by Clamps, Jun 27, 2020.

  1. wizziwig

    wizziwig Active Member

    That's interesting. You're the first person I've seen confirm that this value actually changes. I always thought it was a fixed constant or incorrect OBD2 formula because it never seemed to change. My Niro EV BMS SOC has stayed at 96.5% between new and 10K miles. Hopefully the value is useful for tracking degradation but I'm not sure. Could just be noise in the capacity estimation. Keep on eye on it as you accumulate more miles.

    Yes. That's how we know the Tesla batteries have no top buffer (ignoring the software limited Standard Range models) while most other EVs do. On my Niro and Bolt, 100% displayed SOC is 4.16V cell voltage. At 100% displayed SOC, the Model 3 cells read 4.20V. They only use a bottom buffer to prevent owners from completely discharging and bricking their car. They do nothing to protect owners who constantly charge to 100% from rapidly degrading their batteries. It's also why visible range/capacity degradation begins as soon as you buy the car (no top buffer to hide it).
    Last edited: Jul 1, 2020 at 12:34 AM
  2. Anaglypta

    Anaglypta New Member

    Soul EV Spy Lite no longer displays several of its screens (including Cell Map) after the BMS update. The info is still available in Torque Pro, but not quite so conveniently. :(

  3. ericy

    ericy Active Member

    Free variant or paid?

    I would open a support ticket with the guy who wrote the thing. I think I submitted one using his github site (which mainly has the source to the free variant).

    The tool does a lot of logging - the trick is to find the logfile on the phone.
  4. Anaglypta

    Anaglypta New Member

    Lite is the free version and doesn't do logging - the paid version claims to work with 2020 model year Kona's, but I'm too tight to shell out £12 ($15) to find out. :D

  5. My Canada car has an 8 year, 160,000 km warranty on EV components incl the battery. For the battery it specifically mentions 70% as the replacement threshold. So I would expect the US lifetime battery warranty to be the same 70%. If different, I would expect them to then specify that. What does the US 2020 model battery warranty say? Does it mention 70%.
  6. wizziwig

    wizziwig Active Member

    Seems to be typical for EV battery warranties. Tesla offers same 70% capacity warranty. On an 8-year scale, other EV components are far more likely to fail as RP can attest to.
  7. Yes. Hybrid and EV system is warranteed to 10 years or 100K miles and 70% battery capacity.

    The powertrain has the same limits for the original owner, but a subsequent owner gets 60,000 miles (and probably 6 years - I forgot on the way down from the garage).
  8. For me it was availability of service and repairs. Tesla owners are going 6 months or more, without their car sometimes, waiting for body repair. Here in rural Maine, the lack of Tesla service centers is a deal breaker.

    Plus, if I were going to spend an extra 5 figures on any car, there's lots of things I'd consider buying instead!
    KiwiME likes this.
  9. Just curious NRH, how far downeast are you? I used to live in S. Penobscot.

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