Battery Charging; Battery Safety Terminal, Replacing - BMW 5251 Service Manual

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Battery, Starter, ~lternatorl
Battery charging
Discharged batteries can be recharged using a batterycharg-
er. Remove the battery from the trunk during charging.
Prolonged charging causes electrolyte evaporation to a level
that can damage the battery. It is best to use a low-current
charger (6 amperes or less) to prevent battery damage
caused by overheating.
WARNING
-
Hydrogen gas given off by the battery during charging is ex-
plosive. Do not smoke. Keep open flames away from the top
ofthe b a t t e ~ and prevent electrical sparks by turning off the
battery charger before connecting or disconnecting it.
Battery electrolyte (sulfuric acid) can damage the car. If
electrolyte is spilled, clean the area with a solution ofbak-
ing soda and water.
Always allow a frozen battery to thaw before attempting
to recharge it.
Always disconnect both battery cables and remove bat-
tery from vehicle during battery charging. Do not ex-
ceed 16.5 charging voltage at the battery
Battery safety terminal, replacing
If the battery safety terminal has been triggered, investigate
and correct the cause prior to replacement.
-
Working in right side of luggage compartment, remove bat-
tery trim panel.
-
Disconnect negative (-) battery terminal and cover with
insulator.
-
Disconnect positive (+) cable from battery.
-
Release positive (+) cable from cable brackets on luggage
compartment wall. Lay new repair cable parallel to positive
cable.
-
Mark off length of new cable on old cable. Allow 10 cm
(2.5 in) of slack.
-
Saw through old cable.
Do not use bolt cutters or similar tools to cut through cable.
A cable end that has been squashed flat will not fit into the