We are considering a 2020 with 24k miles. Offered for 20,700. Is there a way to assess how good the battery is? What else should we look for in this vehicle?
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US ICCU Recall (aka 12V battery failure issue) and Tesla Supercharger access and adapters. Please do not create duplicate threads on these topics. Links: ICCU Thread | Supercharger Thread | Adapter Thread
AlexM
Assessing battery health of a used 2020 ioniq
Yes. There are recent posts in here. Use advanced search , Obdii carscanner EvWatchdog keywords should find them.
In Germany you can order an OBD2 device from Aviloo that you can plugin the OBD port, charge the car and drive the battery (near) empty. You then will get a professional quality test result.
Maybe similar solutions are offered in the US.
Maybe similar solutions are offered in the US.
You can read some SoH value from the Ioniq using an OBD-BT dongle and an Android apps, e.g. Ev Watchdog Lite . But IMHO it does not tell much useful information about the battery health. Mine showed 91.4% after a half year perfect charging. After contacting the garage, the upgraded the BMS and since then it shows 100%. In German forums the common sense seems to be that this value just shows how well-balanced the cells are (but this does not explain the bad value in my car, because it had constant cell voltages) - at least it does not seem to cover the constant aging of all cells. Hence, the best way to measure the state of the battery is using something more sophisticated like the Aviloo device which does not just reads one value from the car, but Thousands for a longer drive and larger SoC-interval.
Some Ioniq’s of that era had a recall and needed a traction battery replacement, it would be in the Hyundai vehicle history if completed. Ask about the service history if you can and make sure you get the remaining Hyundai warranty in writing. A battery health check should also be in the vehicle history if it has had dealer services.
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