Topping up cells with water

A vented battery contains demineralized water in each cell. Together with sulphuric acid, this water ensures that the chemical process functions perfectly. Each cell must be supplied with sufficient water. If the lead plates in the cell are "dry", there is a risk of damage and capacity reduction. It is therefore important to maintain the water level. However, the water evaporates during charging and discharging.

To ensure optimum battery performance, it is therefore necessary to check the water level and refill it regularly. This maintains the electrolyte level that connects the positive and negative plates in the battery. It is important that the battery is not overfilled. If the battery is overfilled, it will leak through the fuel filler caps during use and charging.

The advantages
Technical data

Your advantages


Product portfolio

Would you like to learn more about our product family<br />and the corresponding product portfolio?

  • Topping up batteries with demineralized water to the appropriate level after the charging process
  • For batteries with or without a central topping system e.g, Aquafill

Product data

Product group service

Typical areas of application:

  • Industrial trucks
  • Special-purpose vehicles
  • Cleaning machines
  • Lifting platforms
  • Wheelchairs and rehabilitation equipment
  • Others