Visual check

WARNING: This page is about a different car, the 2002 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

The battery plugs must be fully tightened when charging, measuring voltage or performing load tests.

A visual check of the battery should be performed before performing measurements such as resting voltage, electrolyte density or battery load check.

Performing this test establishes:

Whether battery housing is damaged. Electrolyte can leak out if housing is damaged.
Whether battery posts (battery cable connections) are damaged. Wiring connector contact cannot be guaranteed if battery post is damaged. This may cause a cable to spark/burn which may cause malfunctions in electrical system.