Wet Cell Battery Maintenance - Topping Up the Water Level [FREE CHART]

by Matt Besley on 31-10-2016

Wet Batteries.jpg

Using a wet cell battery often gives you a longer run time with your cleaning machine, but you do need to make sure they are maintained.

Here's some tips on battery maintenance that will improve the life of your battery, and a free chart to put up next to your charger.

What are Wet Cell Batteries - and Why do you have to Refill Them?

Wet cell batteries are sometimes called lead acid batteries.  They have a series of plates inside with a sulfuric acid and water solution.  The solution is called electrolyte.


The lead acid battery is made up of plates, lead and lead oxide (various other elements are used to change density, hardness, porosity, etc.) with a 35% sulfuric acid and 65% water solution. This solution is called electrolyte which causes a chemical reaction that produce electrons.  


This process means that you need to fill up the batteries with deionised water - and it is recommended you do this every 2 weeks.  Don't use ordinary tap water as this is loaded with chemicals and minerals which are harmful to your battery.


If this process is not carried out, the plates in the battery are exposed and will warp, whcih will irreversibly damage the battery.


The 4 Step Process to Refill your Batteries


 1.  Unscrew cover caps from the battery vent wells.


2.  Check the water level of the water in the batteries

Battery Refil.jpg

The water level should be covering the top of the battery plates, and around 3mm from the bottom of the vent wells as shown in the above picture.

3. Fill the battery with deionised water as necessary

Do not use tap water, and do not overfill.


4. Replace the cover caps

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