Know Your Battery...


A few helpful points you should know about traction batteries...

What is a traction battery used for?

  • Powers the motor that drives an electric vehicle such as forklift truck

  • Provides power for a specific purpose on an electric vehicle such as the lift on an electric forklift truck

  • Powers accessories like headlights on an electric vehicle

Where does the water in an industrial battery go?

Proper watering of  forklift truck battery is the most important part of sustaining a solid maintenance routine. Adding water should occur at weekly intervals an automatic system.

Water is transformed into gasses during the charge cycle. Hydrogen bubbles are produced at the negative plates and oxygen bubbles at the positive plates. The Hydrogen and Oxygen bubbles are released into the air, and gassing occurs in the range of 2.35 to 2.38 volts per cell this will change as the temperature changes.

What happens when the water level is too low?

When the water level drops the plates are being exposed to air,  this is where sulphation begins. The active material in the plates dry out and become liable to break. Permanent damage will occur if the water level is allowed to drop to a level of exposure to air.


Overcharging your battery can have a serious effect on its longevity, although it is not as obvious as undercharging. It is important to check battery voltage and charge current from the charger’s ammeter.

Overcharging due to excessively high charging rates produces excess gassing, and corrosion of the spine. This will result in decreasing of active materials and further water loss.

Storing your battery

Batteries should be stored in a well ventilated location away from radiators, heating or other sources of heat.  They also need to be protected from exposure to direct sunlight. Before storing, your battery should be fully charged and the electrolyte at the proper level.  Always give a freshening charge prior to returning to service.

For more information about our Lucas traction batteries please contact us