Electrolyte level - batteries with charge indicator (magic eye), checking

Fig 1: Locating Magic Eye

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Electrolyte level on batteries with charge indicator - arrow  - can be established from the color indication. Three different colored displays are possible:

color indicator	Battery status
Green	Battery adequately charged.
Black	Not charged or inadequately charged.
Colorless or yellow	Critical electrolyte level reached; topping up with distilled water essential, procedure → Electrolyte level - batteries with sealing plugs, checking