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EnglishCharging the vehicle -> Discharged high-voltage battery and vehicle battery for your BMW i4 2021-2025
Charging the vehicle
MOBILITY
Optimizing the high-voltage
Discharged high-voltage
battery and vehicle battery
battery's service life
Proper use can optimize the high-voltage bat-
tery's service life:
General information
In addition to the high-voltage battery, the ve-
hicle has a 12 volt vehicle battery, which is re-
quired for operation of the onboard electronics.
▷
Charge high-voltage batteries with a low
charging capacity at an AC charging station
or Wallbox.
▷
For daily use, operate the vehicle with a
charge level between 10% and 80%. A
charging target of 80% can be set for this.
With a discharged vehicle battery, no operation
of the vehicle is possible.
Charge target, refer to page 295.
▷
Recharge the high-voltage battery as close
to a planned departure as possible. A time
frame can be set for charging.
Service life of high-voltage
battery
Charging in the time frame, refer to
page 295.
General information
The performance of the high-voltage battery,
and thus the vehicle's range, decreases over
its service life. The service life of the high-volt-
age battery can be optimized by how it is used.
▷
▷
Reduce the load on the high-voltage bat-
tery by using an efficient, anticipatory driv-
ing style.
Increasing the range, refer to page 281.
Avoid direct sunlight at high outside tem-
peratures.
Charging instructions
Charging habits have a significant effect on the
high-voltage battery's service life:
Long stationary periods, vehicle
shutdown
If planning to leave the vehicle stationary for
long periods of time, note the following:
▷
▷
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If the vehicle is stationary for long periods
of time with a battery charge of over 80 %,
this may negatively affect the battery's usa-
ble energy, charging time, and charging
power during DC charging.
▷
If the vehicle is to be stationary for more
than 6 months, park the vehicle with a
battery charge between 50 % and 80 %.
Check the battery charge every 6 months.
Frequent DC charging with a charging
power greater than 100 kW may negatively
affect the battery's usable energy, charging
time, and charging power during DC charg-
ing.
▷
If the vehicle is stationary for less than 6
months, park the vehicle with a charge level
between 30 % and 50 %.
If the vehicle has been charged several
times in a row with DC, this system may
temporarily reduce the charging power to
protect the high-voltage battery. If reduced,
the charging power is reset after a few
hours. DC charging again can extend this
time.
▷
▷
Do not park the vehicle for longer than
14 days if the electric range is depleted.
Do not leave the charging cable connected.
Maintenance
The high-voltage battery is maintenance-free.
299
Online Edition for Part no. 01405B45E30 - VI/24
