Operation CHARM: Car repair manuals for everyone.

Central Venting System







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 top cover side of 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 flow out and on the other hand, prevents the explosive gas in the battery from igniting.