Operation CHARM: Car repair manuals for everyone.

Central Venting System






Non Maintenance Free Battery, without a Visual Indicator

Lead acid batteries that are non maintenance free are filled with electrolyte fluid (wet battery). They have sealing plugs.

CAUTION!
Risk of injury from direct exposure to battery acid!

Observe the 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 the 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 results from battery charging from causing damage or putting your health at risk, 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 the 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.