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VARTA® truck batteries – shock and vibration resistant

VARTA® truck batteries – shock and vibration resistant

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VARTA truck batteries are robust

In many modern trucks, the battery is installed at the end of the frame. There are two reasons for this:

  1. The space between the axles is used for a larger tank. This improves both range and economy, especially in countries with high fuel prices. As well as this, fewer refueling stops reduce journey times and facilitate scheduling.
  2. The truck's SCR catalyst reduces nitrous oxide emissions by 95% and makes transportation of goods by road future-proof. However, the urea tank which is needed to operate the catalyst also takes up space. This is another reason why in many new trucks the battery is integrated into the area of the rear axle.

At the rear end of the truck there is even enough space for two large batteries. However, the location at the rear end of the tractor unit also causes additional stress on the battery. The shocks and vibrations which act on the rear axle are also transferred to the battery.

New challenges for truck batteries

In addition to the increased vibration and shocks due to the position above the drive axle, truck batteries are also subjected to stresses due to other mechanical factors. Location at the rear can amplify unwanted oscillations and resonances. With conventional battery designs the continuous vibration can considerably reduce the life of the truck battery. Thanks to special constructional features, (Link to articles 5 and 6) batteries for end-of-frame installation are equipped to deal with the increased vibration requirements.

This can be identified from the "END OF FRAME INSTALLATION" symbol on the battery.

VARTA truck batteries meet the highest requirements of the current standard

In order for truck batteries to meet the requirements of modern long distance goods transport the European battery standard EN50342 has been revised. According to the test which is specified in directive V3, a truck battery must withstand a 20-hour vibration test in a spatial axis at a frequency of 30 Hz. Since the revision of the standard there is now a new requirement V4, which allows for the increased vibration requirements.

The new directive V4 achieves a better approximation to real-life operation. Truck batteries must withstand a five-hour vibration test in all three spatial axes over a frequency spectrum from 5 to 100 Hertz. Only a few batteries on the market withstand this severe test. These include the VARTA Truck AGM battery and the VARTA Truck EFB battery.

Planning security through reliability

For fleet managers, reliable and robust truck batteries are an important prerequisite for economical operation and reliable planning of the fleet. Since the introduction of the VARTA Truck EFB premature failures due to vibration are a thing of the past. With long-life, vibration resistant truck batteries from VARTA fleet operators are on the safe side in future.