How long does it take to fully charge a car?

It’s the battery capacity divides the actual charging power. Take BMW i4 eDrive40 for example, the batter is 83.9kw.h, charge power is 11kw, so if you have three phase power, install a 11kw charging station, actually charge at 11kw per hour, then the time to charge should be 83.9/11=7.62 hours. But usually after charging to 90%, the charging will slower. And if charge at a 7kw charging station, it should be 83.9/7=12hours.