Charging The High-Voltage Battery - Mercedes-Benz EQS 2021 Owner's Manual

®
Together with ESP and 4ETS, 4MATIC improves
the traction of your vehicle whenever a driven
wheel spins due to insufficient traction.
If you fail to adapt your driving style, 4MATIC can
neither reduce the risk of an accident nor over‐
ride the laws of physics. It cannot take into
account road, weather or traffic conditions.
4MATIC is only an aid. You are responsible espe‐
cially for maintaining a safe distance from the
vehicle in front, for vehicle speed, for braking in
good time and for staying in lane.
% In wintry road conditions, the maximum
effect of the flexible all-wheel distribution
can be achieved only if you use winter tyres
(M+S tyres), with snow chains if necessary.

Charging the high-voltage battery

Notes on charging the high-voltage battery
* NOTE High-voltage battery damage due
to leaving the vehicle idle for lengthy
periods of time
Lithium-ion batteries experience a natural
self-discharge.
Exhaustive discharging can therefore occur if
the vehicle is idle for several months. This
can damage the high-voltage battery.
To avoid damage, please observe the
#
following recommendations when han‐
dling the high-voltage battery.
* NOTE Accelerated ageing of the high-
voltage battery
As a result of its basic characteristics, the
storage capacity of, and the amount of
energy available from, the high-voltage bat‐
tery decreases over the course of its life.
Due to this, both the maximum electrical
Driving and parking 203
range that can be achieved by the vehicle
and its maximum electrical output can be
impaired.
The following factors could accelerate the
ageing of the high-voltage battery:
frequently fully charging (charge level
R
100%) the high-voltage battery, especially
when this process is not directly followed
by a journey
frequent rapid charging with direct cur‐
R
rent (mode 4)
leaving the vehicle idle for lengthy peri‐
R
ods at high ambient temperatures
To avoid accelerated ageing, please
#
observe the following recommendations
when handling the high-voltage battery.
Recommendations when handling the high-volt‐
age battery:
Every six months, when the outside tempera‐
R
ture is above 10 °C, park the vehicle over‐
night with a charge level below 30%.