Central Venting System

Maintenance Free Battery

Only maintenance free batteries conforming to standards "TL82506" (as of December 1997) and "VW75073" (as of August 2001) may be installed.

CAUTION!
Risk of injury due to contact with battery acid!

• Observe warning notes and safety precautions. Refer to => [ There is a risk of injury from the battery acid. ] Lead Acid Battery Warnings and Safety Precautions.

Risk of explosion due to the explosive gas that forms during battery charging.

• Observe warning notes and safety precautions. Refer to => [ Risk of explosion due to the explosive gas that forms during battery charging. ] Lead Acid Battery Warnings and Safety Precautions.

Central Venting System

To prevent the gas that forms in the engine compartment or vehicle interior during battery charging from causing damage or posing a threat to health, the gas is discharged centrally through an opening on the side of the top cover on the battery.

- Make sure the central venting hose or tube is always secured on the battery.

- Make sure the central venting hose or tube is not pinched. Only then can battery be properly vented.

• Newer generation batteries have a fine mesh flame trap at the central venting exit point. The flame trap is a round fiberglass mat approximately 15 mm wide and 2 mm thick that works like a valve. On the one hand, it allows the gas formed during battery charging to vent and on the other hand, prevents the explosive gas in the battery from igniting.