A8 Quattro Sedan V8-4.2L (AUX) (2001)
Battery: Testing and Inspection
No Load Voltage, Checking
No Load Voltage, Checking
CAUTION!
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Battery cell caps must be screwed in tightly when charging, measuring voltage or performing load tests
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Be sure to observe the following notes otherwise a correct measurement cannot be guaranteed.
Special tools:
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Multimeter Fluke 83 or
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Volt-Amp tester SUN VAT 40
NOTE:
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If the load voltage is being tested with the battery installed, first disconnect ground strap
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Do not start or drive vehicle with battery to be tested for at least 2 hours before taking measurements.
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No loads must be applied to the battery for at least 2 hours before starting to test.
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Battery must not be charged for at least two hours before taking measurements.
Check battery no load voltage as follows:
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With battery installed with ignition switched off, check voltage between battery terminals with voltmeter.
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No load voltage: 12.5 Volt or above, battery OK
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If battery is below 12.5 V, recharge the battery immediately. See: Battery, Charging