Color Visual Indicator, Checking

3 Color Visual Indicator, Checking


Risk of injury. Observe warning notes and safety precautions. Refer to => [ Battery Safety Precautions ] Battery Safety Precautions and => [ Battery Safety Designation ] Battery Safety Designation!


Batteries that have a colorless or light yellow visual indicator do not have to be tested or charged. Jump starting must not be used!

There is a risk of explosion during testing, charging or jump starting.

These batteries must be replaced.

Visual Indicator General Information

Applies to all original equipment batteries with index 1J0, 7N0, and 3B0 and to all replacement batteries, part number 191 915 105 AB, and beginning with index 000 915 105 AX.

The visual indicator provides information concerning the level of the electrolyte and the charge state of the battery.

To obtain an accurate reading, gently tap the charge indicator with a screwdriver handle or rock vehicle slightly. By doing this, the air bubbles that occur normally during battery charging (even during vehicle operation) that adversely affect charge indicator reading will be displaced. Thereby, the color indicator of the visual indicator is more accurate.

• Air bubbles can especially form under visual indicator when a battery is charged, including when charged while driving. These bubbles may cause the visual indicator to read inaccurately.

• As the charge indicator is located in a single cell, the indication is only valid for that cell. An exact assessment of the battery condition is only possible by performing a battery load test. Refer to VAS 6161 => [ Battery, Testing ] Battery Tester VAS 6161 or Midtronics => [ Battery, Testing ] Midtronics Battery Tester.

• The visual indicator can be installed at various locations on top of battery.

There Are Three Possible Color Indications:

• Green: Battery is sufficiently charged.

• Black: Insufficiently charged < 65% or discharged.

• Colorless or light yellow, battery must be replaced.