Testing Electrolyte Density; Charging Battery - Skoda FABIA 2000 Workshop Manual

27
After completion of the test, this low voltage is retained for
a lengthy period, the voltage rises only slowly again.
If the voltage measured under a load lasting for 5 to 10
sec. is less than the minimum voltage, then the battery is
discharged or defective and the electrolyte level must be
checked.

Testing electrolyte density

♦
The electrolyte density, in combination with the volt-
age measurement (under load), provides accurate in-
formation concerning the charge level of the battery.
Use a hydrometer for the test.
♦
The greater the density of the electrolyte extracted
from the battery, the more the float rises. The electro-
lyte density can be read off on the scale as a specific
3
weight (in kg/dm ).
The following measurements must be achieved:
Charge state in moderate
climatic zones
discharged
half charged
well charged
Charge state in tropical
climatic zones
discharged
half charged
well charged

Charging battery

Caution!
The battery plugs must always be securely tightened
when charging the battery, measuring the voltage
and conducting a test under load to ensure they are
really sealed.
Do not smoke or use a naked light in rooms in which
batteries are being charged. The reason is that a gas
is formed by the charging process in the battery and
this gas can easily ignite.
Frozen batteries must be replaced.
Special tools, test and measuring equipment and
auxiliary items required
♦
Battery charger.
27-1
4
page
Specific density (in kg/
3
dm )
1,15
1,22
1,28
Specific density (in kg/
3
dm )
1,08
1,16
1,23
Battery
FABIA 2000 Electrical System
Edition 12.04
S00.5304.12.20