While the different charging methods may seem similar and people tend to ignore the differences, they are actually two different processes. There are big differences between direct current DC and alternating current AC: current, voltage, charging times, and the availability of charging stations. With the BMW iX, the car's behavior when charging with AC is sometimes inconsistent, and the vehicle may not charge. Changing charging stations is the first thought, and it's also the right thing to do. People think the wallbox is faulty, and they're curious to try a new charging station, still using 220 Volt AC. This is typical behavior for users who experience different charging behavior between different AC chargers. In practice, DC charging may work as expected, while a specific AC charging wallbox may behave unpredictably. The safest solution is to isolate the problem by comparing one AC charger with another, rather than considering all charging methods to be equivalent. Perform a charging test with your home wallbox and check whether charging always occurs properly or if you notice any problems. Try at least three times. Repeat the same test outdoors, that is, with different AC charging stations (for example, at the office, in public parking, or at your company) and check the results. The failure to charge could be an isolated issue or it could be a deeper cause, which should be investigated with BMW Service. In fact, if the car repeatedly fails to charge at the same charging station, it could be a charger issue, but if the same problem doesn't always appear, the charger may not be the problem.