SMART EQ forfour Owner's Manual page 81

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Switching the ignition on and then off
can reactivate the high-voltage electrical
system temporarily. The vehicle can then
be parked safely.
Do not leave the vehicle with a discharged or
almost fully discharged high-voltage bat-
tery for longer than 14 days. You can check
the charge status in the charge level display
Y
( page 71).
Extreme outside temperatures
The efficiency of the high-voltage battery is
temperature-dependent and is significantly
reduced at low or high temperatures. In addi-
tion, the electrolytes used may freeze at very
low temperatures.
The LED ring in the power output display
shows the power output available
Y
( page 71).
Energy consumption and range
The available energy in the high-voltage
battery is basically reduced by the following
factors:
low outside temperatures
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operating the air-conditioning system or
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heating
use of electrical consumers
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Leaving the vehicle parked for an extended
period at low outdoor temperatures without
charging it can lead to the following:
high-voltage battery output is signifi-
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cantly reduced
charge times can be longer
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range can be significantly reduced
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In extreme cases, it may not be possible to
start the vehicle as a result. You should
therefore always ensure that the high-volt-
age battery is fully charged or that the
charging cable is connected when parking
the vehicle for an extended period of time at
low outside temperatures.
As the high-voltage battery ages, the capa-
city of the high-voltage battery will dimin-
ish over the battery's lifetime. This means
that the maximum range and the maximum
acceleration are reduced.
Charging the high-voltage battery
Battery care
Observe the following notes on battery care:
avoid storing or transporting the vehicle
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in high temperatures over a long period
(e.g. container transport).
connect the vehicle to a power supply
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when parking it for an extended period of
time.
Temperatures below Ò25 † for more than
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seven days can cause irreversible damage
to the vehicle due to frost damage.
Terms of use
Observe the information on exceptions and
limitations in the warranty documentation
and in the Service Booklet.
Voltage surge protector
! Overvoltage in the mains supply can
damage the vehicle. The vehicle is there-
fore equipped with a device which protects
it from overvoltage in the mains supply.
This device may be triggered during
severe thunderstorms, for example, and
may lead to the building's circuit breaker
being tripped and an interruption in the
power supply. These functions protect the
vehicle. After the building's circuit
breaker is switched on again, the charging
process resumes automatically. Following
an interruption in the power supply with-
out the building's circuit breaker being
tripped, it may take up to ten minutes for
charging to resume automatically.
After the device has triggered, switch the
building's fuse unit on again. Otherwise, the
charging process will not resume.
Heat generated by the charging cable
and charging cable connector
Charging cables and charging cable connec-
tors may heat up during the charging proc-
ess at a power socket.
79
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