| Central gas venting system |
| To prevent the gas produced when charging the battery from causing damage or becoming a health hazard in the engine or passenger compartment, the gas is discharged through a central opening in the top of the battery cover. |
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| Make sure that the central gas venting system hose or pipe is always attached to the battery. |
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| Make sure the central gas venting system hose or pipe is not obstructed. Only then is the battery able to vent freely. |
Note | More modern batteries are equipped with a fine-mesh flame trap at the central gas venting outlet. This circular glass-fibre mesh with a diameter of approx. 15 mm and a thickness of 2 mm operates like a valve. It allows the gas given off during battery charging to escape and at the same time prevents ignition of the explosive gas in the battery. |
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