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Ch e ck ing and Filling
"' Connect the charger connectors according to
the instr uctions to the jump start bolts . (Bolts
under the cover = "posit ive", Bolts with hex
head = "negative") .
"' Only now plug the mains lead for the charging
equipment into the wall outlet and tur n it on
¢& .
"' Make sure the charging rate is not over
30 amps/ 14 .8 Volt.
"' When t he batte ry is fu lly charged: Turn the
charg ing equipment off and remove the mains
lead from the wall outlet .
"' Now remove the clamps for the charg ing equip-
ment .
"' Close the cover @ on the positive term inal and
re-install the cover @ .
"' Close the hood
c:::;,
page 220 .
A discharged battery can freeze at temperatures
of only 32 °F (0 °C). Allow a frozen battery to
thaw completely before attempt ing to charge it
c:::;,
,& . However, we recommend not us ing a
thawed batte ry again because the battery casi ng
can be cracked due to ice fo rmation and can leak
battery acid.
Battery charging (Maximum charging rate of
30 amps/14.8
Volt)
When cha rging at
low
voltages (e .g . with a trick-
le charger), t he ba tte ry cables do not have to be
d isconnected first. The batt ery caps sho uld
no t
be opened when charging a battery.
It is not necessary to remove the batte ry from
the luggage comp art me nt .
Fast charging the battery (charging rate
above 14.8 Volts)
For techn ica l reaso ns do not use a battery charg-
er that uses volt age greate r t han 14.8 Volts t o
charge your vehicle's bat t ery.
A
WARNING
Charging a ba t tery can be dangerous .
- Always follow the operat ing instru ctions
provided by the bat t ery char g er manuf act ur-
er when charging your battery .
232
- Never cha rge a frozen battery . It may ex-
plode because of gas trapped in the ice. Al-
low a frozen battery to thaw out first.
- Do not reuse batter ies which were f rozen.
The battery housing may have cracked and
weakened when the battery froze.
- Charge the battery in a well ventilated area.
Keep away from open flame or electrical
spark. Do not smoke . Hydrogen gas generat-
ed by the battery is explosive.
- To reduce the da nger of explosion, never
connect or d isconnect charger cables while
the charge r is ope rat ing .
- Fast charg ing a battery is dange rous and
should o nly be attempted
by a compe t en t
t echnicia n with the prope r equipment .
- Battery acid that may spill duri ng charging
should be washed off w it h a so lution of
warm water and baking soda to neutra lize
t he acid.
(D
Note
Never use a fast charge r as a booster to start
the engine. This will seriously damage sensi-
tive electronic components, such as cont rol
units, re lays, rad io, et c., as well as the batte ry
char ger.
Battery replacement
The new battery must have the same specifica-
tions and dimensions as the original equipmen t
battery.
Intelligent energy manageme nt in your vehicle is
responsib le for d istr ibut ing t he e lect rica l energy
t hroughou t your vehicle
c:::;,
page 195 .
The intelli-
gen t energy management
system will keep t he
engine battery charged bette r then vehicles with -
out this system . To make sure the additional
electrica l ene rgy is available once aga in after you
have changed the batte ry, we recommend that
you install batteries of the same type and manu-
facture only (the same as those installed at the
time your vehicle was delivered) . Specifications
are listed on t he ba tte ry ho using . Your a ut hor-
ized dealer must code the battery in th e energy
9"'
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