You ask, we answer.

This is where you find answers to common questions about our products, their operation and the installation of the battery watering system. We’re also happy to help with any specific needs or questions that might not be included here. Just get in touch with us –  we’re happy to help.

How do I find out which plug fits which battery?

bfs offers a large variety of watering plug types. The kind of battery opening and the application will determine your choice of a suitable plug. View the plugs

Which float will work for me?

We offer a wide range of floats to help control the electrolyte level in the cell accurately. A correct float is needed for the system to operate flawlessly. Which float is correct depends on the distance between the upper edge of the cell vent and the cell baffle or the upper edge of the separators, plus a safety margin of 5 to 10 mm. Floats with a diameter of 22 mm are the standard and work well with most lead-acid batteries. Floats with diameters of 19 or 14 mm are considered special floats that are used for smaller than normal battery interiors. For more information and to use our Float Finder, click here

Can I order bfs plugs that show the corporate design of my company?

Of course. The lids of our plugs can be manufactured with your company logo or your company colors. Using foil stamping, the generous surface of the plug lid can also be designed to your specifications and will be absolutely acid resistant. Another option is to have you logo engraved on the lid. Take a look at some examples

What exactly does central degassing mean?

Instead of a gas escape opening on the side, bfs plugs with central degassing have an additional connector for a hose that is used to control and divert all battery gasses. See the plug with central degassing

How is it possible to protect batteries from explosion or to avoid chain reactions?

The standard plug has an integrated trap which creates a water seal. This prevents an explosive chain reaction between cells. For plugs with central degassing, please note that a FiterEX, which is mounted to the degassing hose, provides protection from the outside. Protection from the inside is guaranteed with a FilterEX that is mounted on each plug.

What are my choices in terms of water supply?

There are three options: 1) Gravity water supply 2) Pumped water 3) Tap water flowing through an ion exchanger. Regardless of the source, the water pressure should be between 0.2 and 3.8 bar (2.9 to 55.1 psi). For detailed information, click here

What needs to be considered when installing a watering system?

To ensure the flawless operation of the bfs battery watering system, the following basic conditions have to be met:
•  Keep the area on and around the battery clean to eliminate the danger of stray currents.
•  Properly routed hoses have no kinks and follow the electric potential on the battery.
•  Disconnect the water feed from the tank, pump or ion exchanger immediately after watering is finished to eliminate any danger of overfilling the cells.
For detailed information about the correct installation of the system, click here

When is the right time to water batteries?

Basically, batteries need to be watered every time after charging. The best moment to start watering batteries is toward the end of the charging process.

How many plugs can be connected in series using your hose system?

We recommend connecting max. 6 to 8 plugs with one string and then putting in a junction. With more than 8 plugs in series, followed by and end piece, the resistance for the water flow is very high, while the pressure at the last plug in the series is very low. To the download area

How can I troubleshoot the watering system?

To avoid running into problems when using a watering system there are several rules that should be noted beforehand and observed. We provide material for download to help you run your system as smoothly as possible. To the download area