Discharged Battery - SMART fortwo coupe Owner's Manual

For safety reasons, only use the charging
cable which is supplied with the vehicle
and which is approved by smart for this
vehicle.
General notes
Method of operation
The vehicle is equipped with a high-volt-
age battery for driving. The high-voltage
battery stores the energy needed to operate
the electric motor and releases it again.
The electric motor uses energy stored in
the high-voltage battery for pulling away
and accelerating.
In overrun mode, kinetic energy is conver-
ted into electrical energy by energy recov-
ery and stored in the high-voltage battery.
The high-voltage battery can be charged as
follows:
through energy recovery while the vehi-
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cle is in motion
with the suitable charging cable at a
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mains socket while the vehicle is sta-
tionary
with the suitable charging cable at a
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wallbox while the vehicle is stationary
with the suitable charging cable at a
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charging station while the vehicle is
stationary
The high-voltage battery can be charged in
a voltage range from 100 V to 270 V.
In the case of vehicles with a 22 kW on-
board charger, the high-voltage battery
can be charged in a voltage range from 100 V
to 400 V.
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When possible only charge the high-
voltage battery when the charge is below
80%. Charge the high-voltage battery at
the latest when the charge falls below
20%.
Charging the high-voltage battery

Discharged battery

The high-voltage electrical system
switches off if the high-voltage battery is
completely discharged. This protects the
battery from exhaustive discharge.
i
Switching the ignition off and then on
can reactivate the high-voltage electri-
cal system temporarily, but can only be
done once. Park the vehicle safely away
from traffic before you do this.
Do not allow the vehicle's high-voltage
battery to remain in a discharged or almost
fully discharged state for more than
14 days. You can check the charge status in
the charge level display (
Extreme outside temperatures
The efficiency of the high-voltage battery
is temperature-dependent and is signifi-
cantly reduced at low or high temperatures.
In addition, the electrolytes used may
freeze at very low temperatures.
In the gauge in the multifunction display,
you can determine the maximum amount of
power available (
Energy consumption and range
The available energy in the high-voltage
battery is basically reduced by:
low outside temperatures
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operating the air-conditioning system
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or heater
switching on electrical consumers
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Due to the physical properties of the high-
voltage battery, low outside temperatures
and failing to charge the high-voltage
battery over an extended period of time
may:
significantly reduce the performance of
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the battery
increase the charge time
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In extreme cases, it may not be possible to
start the vehicle as a result. You should
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page 95).
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page 93).
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