Volkswagen Passat 1995 Official Factory Repair Manual page 4304

Work descriptions
- Screw in battery sealing plugs.
Checking acid level (batteries without magic eye)
Markings on battery housing - arrow -
Note:
Maintaining correct electrolyte level in battery is an
n
important factor affecting length of battery's service
life.
Electrolyte level too low
Note:
Too low an electrolyte level (below min.-marking)
n
causes a loss of battery capacity (power), due to cell
plates drying out. If cell-plates are not surrounded with
electrolyte (sulfuric acid), plates, plate straps, and cell
connectors will corrode. battery will not function as a
consequence of this corrosion. battery becomes
unusable.
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Page 74 of 83
12/7/2004