V Power Supply - Mercedes-Benz Marco Polo 2017 Owner's Manual Supplement

i The interior lighting and USB ports continue
to function. If you use them, the battery volt-
age will decrease further.
If the battery voltage was lower than 10.5 V, the
additional battery must be charged to at least
12.5 V.
X
To cancel sleep mode: press the control
knob.
Charging the additional battery
Charge the additional battery at regular inter-
vals. In this way its capacity is retained.
X
Take the vehicle on a long journey.
The engine alternator charges the vehicle
starter battery and the additional battery.
Even on a long journey, the charging current
may not be sufficient to charge the additional
battery fully. In this case, charge the additional
battery using the battery charger:
X
Connect to a 230 V power supply
Y
( page 64).
X
Switch on the residual current circuit breaker
Y
( page 64).
The additional battery is charged by the
Y
charger ( page 65). The bars flash one
after the other during the charging process.
Maximum charge current: 15 A
i
If the display remains unchanged, check the
fuse of the charge cable (

230 V power supply

Important safety notes
G
DANGER
There is high voltage in the 230 V power
socket if:
the 230 V power supply is being established
R
the residual current circuit breaker is
R
switched on
If you or another person, particularly a child,
reach into the power socket, you could
receive an electric shock. There is a risk of
fatal injuries.
Do not reach into the power socket and keep
children away from it. After connecting to the
230 V power supply, make sure that the resid-
Y
page 67).
Electrical system
ual current circuit breaker is functioning cor-
rectly.
The 230 V power supply provides the following
components with current:
Y
230 V socket ( page 64)
R
Y
Battery charger ( page 65)
R
Y
USB ports ( page 66)
R
You will find notes about what to do in the event
of a thunderstorm in the "Safety" section
Y
( page 14).
63
Z