A4 Sedan L4-1.8L Turbo (AEB) (1997)
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Immerse tip of hydrometer into battery cell and draw out enough electrolyte to allow indicator to float freely.
The higher the specific gravity of the drawn electrolyte, the higher the indicator will float.
The specific gravity of the electrolyte can be read in kg/cubic dm on the hydrometer scale.
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Compare measured value indicated on hydrometer to values indicated in table below:
State of charge in
Specific gravity in
normal climate zones
kg/cubic dm
Discharged
1.12
Half charged
1.20
Good charge
1.28
In normal climate zones, the specific gravity must be at least 1.24 kg/cubic dm.
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If specific gravity is too low: charge battery.
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After charging battery, repeat specific gravity test.
NOTE: The measured values for the specific gravity of the individual battery cells must not vary by more than 0.03 kg/cubic dm.
Examples of unacceptable variations in specific gravity: