Load Test
WARNING: This page is about a different car, the 2004 Audi S4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Observe accident prevention procedures. Wear protective clothing, such as goggles and leather gloves.
CAUTION:
Battery cell caps must be screwed in tightly when charging, measuring voltage or performing load tests.
Turn ignition to OFF position. Connect tester cable clamps to battery terminal. Ensure clamps have a good contact with battery terminals. Connect battery tester according to tool manufacturer's instructions. Load test battery at approximately one-half cold-cranking amperage rating for 15 seconds while observing battery voltage. If voltage reading is 9.5 volts or more, battery is okay. If voltage reading is less than 9.5 volts, charge battery and retest. If loaded battery voltage is still less than 9.5 volts after charging battery, replace battery.