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Operation in winter
The battery has to provide greater amounts of electricity during the winter.
It also has only part of the initial power output at low temperatures that it
has at normal temperatures.
A discharged battery may already freeze at temperatures just below
0°C.
We therefore recommend that you have the battery checked by a
specialist garage before the start of the winter, and recharged if neces-
sary.
Note
If the vehicle is not going to be driven for a period of some weeks when
there is very severe frost one should remove ⇒ page 232 the battery and
store it in a place which is protected from frost. This prevents the battery
from freezing up and thereby being destroyed.
Charging the battery
A properly charged battery is essential for reliably starting
the engine.
– Read the warning notes ⇒
page 228 and ⇒
– Switch the ignition and all electrical components off.
– Only for "quick-charging": Disconnect both battery cables (first
of all "negative", then "positive").
Using the system
Safety
in "Working on the battery" on
.
Driving Tips
– Carefully attach the terminal clamps of the charger to the
battery terminals (red = "positive", black = "negative").
– You can now plug the mains cable of the charger into the
power socket and switch on the charger.
– When charging is completed: switch the charger off and
unplug the mains cable from the power socket.
– Only then should you disconnect the terminal clamps of the
charger.
– Reconnect the cables to the battery (first of all "positive", then
"negative").
It is not normally necessary to disconnect the cables of the battery if you
recharge the battery using low amperages (as for example from a mini-
charger). Please also refer to the instructions from the charger manufac-
turer.
A charging current of 0.1 of the total battery capacity (or lower) is that
which should be used until full charging is achieved.
It is, however, necessary to disconnect both cables before charging the
battery with high amperages, so-called "quick-charging".
"Quick-charging" a battery is dangerous ⇒
on page 228. It requires a special charger and appropriate knowledge. We
therefore recommend that you have your battery quick-charged only by
your specialist garage.
A discharged battery may already freeze at temperatures just below 0°C.
⇒
. We recommend that you no longer use a battery which has thawed
out because the casing of the battery may be cracked through the forma-
tion of ice and this would allow battery electrolyte to flow out.
The vent plugs of the battery should not be opened for charging.
General Maintenance
Breakdown assistance
Inspecting and Replenishing
in "Working on the battery"
Technical Data
231
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