What causes corrosion on car battery terminals

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WHAT CAUSES CORROSION ON CAR BATTERY TERMINALS?
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The primary function of a car battery is to store
the electrical energy generated by the alternator
in the form of chemical energy.
The primary function of a car battery is to store
the electrical energy generated by the alternator
in the form of chemical energy.
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It fulfills the energy requirement of the starter
motor, spark plug and other types of electrical
accessories of the car.
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Any kind of malfunction in such an important
component of the car could disrupt the electrical
power supply which could bring down the vehicle.
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Corroded battery terminals not only destabilizes
the flow of electrical current from the battery
but also adversely affects its longevity.
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So, it is highly recommended to keep the
terminals of a battery clean to establish a
steady supply of the electrical power.
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CAUSES OF CAR BATTERY TERMINAL CORROSION
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LEAKAGE OF SULFURIC ACID
Modern cars use lead-acid batteries which have a
cathode (lead alloy grid filled with sponge lead)
and an anode (lead alloy grid coated with lead
dioxide). Sulfuric acid acts as electrolyte.
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Leakage of sulfuric acid might be responsible for
the corroded battery terminals.
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Overfilling the battery with distilled water is
solely responsible for the leakage of sulfuric
acid through the terminals.
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LEAKAGE OF HYDROGEN GAS
A car battery generates a certain amount of
hydrogen gas in the process of power storage
which escapes from the battery through a vent
hole located on the filler cap.
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However, a blocked vent hole fails to discharge
the hydrogen gas which could be responsible for
the battery terminal corrosion.
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BATTERY OVERCHARGING
An overcharged battery could be responsible for
the leakage of electrolyte through the terminals
which could be responsible for corroded battery
terminals.
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Besides, copper clamp combines with the sulfuric
acid in the presence of electric current to
generate copper sulphate which is solely
responsible for the battery terminal corrosion.
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FINALLY
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Corroded battery terminals not only adversely
affect the power supply but also reduces the
lifespan of a car battery.
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So, the condition of the battery terminals should
be inspected regularly and efforts should be made
to keep the terminals clean.
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A battery with clean terminals could last longer
and perform well.
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THANK YOU
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