VW ID.4 Amazes With DC Fast Charging Consistency (3 Cars Compared)

In-depth analysis includes results of DC fast charging from 0-100% and comparison of data for three different ID.4 cars.

We are back with an extended in-depth analysis of DC fast charging of the Volkswagen ID.4 1ST, which amazes us not only with the charging performance but also consistency.

Today we will focus on a new test – from 0 to 100% State of Charge (SOC) – conducted by our colleague Kyle Conner from Out of Spec Reviews and InsideEVs YouTube channels. Additionally, we will compare the results with the previous test by Tom Moloughney and data released by Fastned, a European charging network. Three ID.4 cars in total.

Kyle’s test concerns the Volkswagen ID.4 1ST (82 kWh battery version and RWD). Because the battery thermal management system tries to keep the cells at a temperature of about 25°C (77°F) all the time, there is no need for pre-conditioning. Almost all electric loads were off during the charging session (besides a minor load of heated front seats).

Charging power vs state-of-charge (SOC)

Charging of the Volkswagen ID.4 starts at a power level close to its peak of about 127 kW, which is maintained up to roughly 30% SOC.

Then the charging curve gently fades, reaching about 65 kW at 70% SOC. This level is maintained up to over 80% SOC. After a certain point, the power drops again in stages, but overall it’s still nearly 40 kW at 90% SOC and at 30 kW at 97-98% SOC. A very strong result.

Comparison of charging power

And now, a very important comparison of the Volkswagen ID.4 (82 kWh battery version) DC fast charging results of three different cars.

We have here data from three completely different charging sessions:

  • Kyle Conner’s test in the U.S.
  • Tom Moloughney’s test in the U.S.
  • Fastned’s test in Europe

Three different ID.4 cars, three different chargers, three different people, three different days and conditions, as well as three different starting points.

The peak values and overall shape are the same. There are only small differences, that are probably mostly related to the accuracy of measurement/data reading (from videos/charts) than to the actual real difference of the charging performance.

We can assume that the consistency is so high thanks to the battery thermal management system and very similar temperature of the cells inside the pack. With such an approach, there is also no shifting of the charging curve on the SOC-axis, depending on the starting point.

Conclusions

The conclusion from the final DC fast charging test of the 2021 Volkswagen ID.4 (82 kWh) is very positive.

The charging curve and peak value are good and it seems that drivers will be able to get such results consistently.

We look forward to testing more EVs and comparing them to the Volkswagen ID.4/MEB-based models.

General info:

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

** 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).

Source: Read Full Article