Hyundai Ioniq 5 DC Fast Charging Analysis: It Seems Impressive

If this is true, then Audi e-tron has a strong contender.

Scanning the Internet for information about the Hyundai Ioniq 5, we came across an interesting demonstrative chart of DC fast charging, posted on a German forum – goingelectric.de.

It shows an example of 10-80% SOC charging session, at a 350 kW, 800 V charger.

Hyundai Ioniq 5 charging example (image source: goingelectric.de)

Comparison of charging power

Let’s compare those preliminary results with one of the world’s best models in terms of DC fast charging – the Audi e-tron quattro 55 (2019 version). At a later point we will probably try to compare it with Tesla, which are also state-of-the-art in terms of charging.

As we can see, for the available SOC range, the Hyundai Ioniq 5 has significantly higher peak power and is above the e-tron for more than half of its SOC, despite the battery pack being 10% smaller (77 vs 95 kWh).

Even then, the difference – up to 80% SOC – is not big. Ultimately, the average between 20-80% is almost the same at nearly 150 kW.

We can’t say anything about the area above 80%.

Comparison of C-rate

Here is the secret of the Hyundai Ioniq 5 – its battery pack is pushed hard up to around 3.0C, compared to a rather constant load of 1.5C in the case of e-tron.

Comparison of range replenishing speed

Finally, the rate of replenishing range. This is where Hyundai Ioniq 5 destroys the Audi e-tron. It not only charges at high power, but is also very efficient. As a result, the range is replenished 30% faster (between 20 and 80% SOC).

On top of that, it has slightly more WLTP range than the e-tron (about 10% or so), which overall translates to a noticeable difference.

A little bit of summary:

DC Fast Charging Comparison by InsideEVs
Model
[data source]
Drive /
Battery
(kWh)
Max
Power
Avg
Power
(20-80%)
Max
C-Rate
Avg
C-Rate
(20-80%)
WLTP range
rep. rate
(20-80%)
2019 Audi e-tron quattro 55 SUV
[Fastned]
AWD
95 kWh
155 kW149 kW1.61.612.4 km/min
7.7 mi/min
2021 Hyundai Ioniq 5 (example)
[Forum]
AWD
77 kWh
232 kW147-150
kW
31.916 km/min
10 mi/min

Conclusions

The example of DC fast charging session of the Hyundai Ioniq 5 indicates that this will be another level of charging speed – 2C and 15+ km/min on average (20-80% SOC) and 3C/25+ km/min at peak.

Now we eagerly wait for some real world results or data from a reliable source, that would confirm or debunk this example.

2021 Hyundai Ioniq 5 (example) :: DC Fast Charging Summary by InsideEVs
Battery pack (net / total): 72.6 / 77 kWh
[Data source: Forum]
Peak Power
Peak C-rate

Average Power (20-80% SOC)
Average-to-Peak Power
Average C-rate (20-80% SOC)

232 kW
3.0

about 147-150 kW
63-65%
1.9

Range Replenishing Speed (Average 20-80% SOC):
WLTP16 km/min (10 mi/min)

General info:

* Some values on the charts are estimated from the data source.

** Temperature of the battery cells might highly negatively affect charging capabilities. We don’t have data about temperatures of the battery at the beginning and during the charging process. In cold or hot weather, as well as after driving very dynamically, charging power might be significantly lower than shown on the charts (in extreme cases charging might be impossible until the battery temperature will not return to an acceptable level).


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