BMW serie 7 1999 User Manual

174

Battery

Do not short circuit the battery termi-
nals. This creates a risk of personal in-
jury from high-voltage sparks.

A highly-explosive gas is
generated when the battery is
charged.

If you happen to get acid in
your eyes, rinse thoroughly for
15 minutes with clear water.

Consult a physician immediately. If you
get acid spray on your skin or clothing,
rinse with plenty of water. If electrolyte
is accidentally ingested, consult a phy-
sician immediately.

In order to protect the battery
case from ultraviolet radiation,
do not place it in direct sunlight.

A discharged battery can freeze. Store
the battery in areas where temperature
remains above freezing.

Car care

The battery is completely maintenance-
free, that is, the original electrolyte will
normally last for the service life of the
battery.

Charge condition – BMW 740i/L

You can read the charge condition of
the battery with the "Magic Eye" (a hy-
drometer) (not released at this time):

> Green: Adequate charge
> Black: Not charged adequately. The

battery must be recharged. Please
contact your BMW center

> Yellow: Replace the battery.

380de655

Charging the battery

Charge the battery in the vehicle only
when the engine is off. Charge the bat-
tery using the supplementary positive
terminal and ground (terminal) in the en-
gine compartment (refer to "Jump-start-
ing" on page

179

On the BMW 750iL, there is an auto-
matic switch between the two batteries
during charging.

Before performing any work on
the electrical system, disconnect

the cable from the negative terminal. If
you do not, short circuits can create the
risk of fire or personal injury.
If a jump start is necessary, connect the
cables only to the auxiliary terminal for
jump starting and a ground in the en-
gine compartment in order to avoid
damage to the batteries (refer to
"Jump-starting" on page

179