Battery with charge indicator
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.
Distinguishing features
- These batteries have a charge indicator.
- This charge indicator -arrow- provides information on the electrolyte level and charge of the battery to be tested.
- Three different color indications are possible:
- Green → Battery is adequately charged.
- Black → Battery is not charged, or inadequately charged.
- Colorless or yellow → critical electrolyte level has been reached, topping off with distilled water essential.
NOTE:
Please observe that if the battery is older than 5 years and the color of the charge indicator is colorless, the battery is to be replaced with a new one.
Test sequence
NOTE:
- Air bubbles may form under the charge indicator, particularly if a battery has been recharged, i.e. even if the battery has been charged while driving. These air bubbles falsify the color indicator of the charge indicator.
- If batteries are installed with caps for production reasons, these are covered with plastic sheeting.
- Before performing a visual check, lightly and carefully tap onto the charge indicator using a screwdriver handle.
- This will cause the air bubbles to disappear
- Read color indication of "charge indicator".