Charging your BMW electric vehicle results in charging losses. These depend on various factors, such as the charging power, the charging type (AC, DC or HPC) or the state of charge (SOC) and the temperature of the high-voltage battery. To reduce charging losses at DC charging stations, BMW recommends using the "prepare battery" function and preferably charging the high-voltage battery in the range between 10% and 80% of its capacity. The "prepare battery" function is available in the My BMW App for fully electric BMW models with BMW Operating System 8 and newer.
Link to watch video: How To Precondition and Manage Charging | BMW How-To
