Should You Use Dielectric Grease On Battery Terminals?

Key Points:

  • Dielectric grease is a non-conductive material that’s utilized in an electrical circuit to move heat away from a gadget.
  • It is often used in the terminals of a car battery to prevent corrosion and improve performance.
  • You must choose an appropriate lubricant, as all lubricants are not the same.

You’ve probably heard of dielectric grease if you work with batteries and connections. Some individuals think it’s the best battery terminal applicant, while others prefer Vaseline and different terminal sprays. It is used in a variety of methods by various people to safeguard their car battery connections.

So, what exactly is this grease? Does putting dielectric grease on battery terminals help it prevent corrosion?

Grease is required to prevent car battery terminals from corrosion. One of the main causes is battery overcharging, which causes gas to escape, flow through terminals, and react with the metal, causing oxidation.

Grease should be applied to terminals to prevent corrosion, but it is not required. The battery will work in any case as long as the terminals and clamps are free of corrosion and connected and securely fastened. To learn more about dielectric grease, take a look below.

How to Apply Dielectric Grease to Your Battery Terminals?

Dielectric grease is mostly used to prevent corrosion. It functions as a seal and protects the terminals of your automobile battery from the elements, such as dust, debris, and moisture. It keeps moisture and other contaminants out of electrical connections, preventing corrosion.

When applied, it lubricates the battery terminal contacts. It’s a good lubricant that keeps the battery connections from rubbing together. The presence of dielectric grease enhances lubrication and makes unscrewing your car battery’s terminal connections easier.

The steps to applying dielectric grease on battery terminals are provided below:

Step 1: Make sure your car’s battery terminals are clean before adding dielectric grease.

Step 2: Clean them with hot water and baking soda if they have any corrosion or grime. Scrape away the built-up over the terminals with the help of a toothbrush. Ensure that any build-up, such as dirt and corrosion, is completely rinsed away. To make the terminals fully clean, use cold water or a moist towel to remove the residue.

Step 3: Using a dry towel, wipe down the clamps and battery terminals. Before applying grease, make sure the terminals are totally dry.

Step 4: Now, using your clean fingers, add the needed amount of dielectric grease on the terminals and rub it in. This procedure effectively lubricates the terminals and protects them from further corrosion.

Step 5: Finally, reconnect the cables in the proper sequence.

By following the above steps, you can easily lubricate your battery terminals with dielectric grease.

What is Dielectric Grease Used for?

Dielectric grease is a type of lubricant that is used to disrupt the flow of electric current. It’s utilized for a variety of things, including household electrical repair, automobile wiring, and auto maintenance.

Most liquids, such as methanol, mineral oil, ethanol, and water, do not dissolve it. As a result, it is utilized to make electrical components waterproof in maritime and outdoor applications. Dielectric grease, on the other hand, can be dissolved in xylene, mineral spirits, or Methyl Ethyl Ketone (MEK).

Thermal grease with a silicon grease basis is a good thermal conductive filler with excellent heat transferability. It is used to transfer heat from a device to a PCB.

What’s the Difference Between Dielectric Grease and Lubricating Grease?

Dielectric grease and lubricating grease are created differently because they are meant for distinct functions. The lubricating grease is made up of a lubricating oil, a thickening, and other additives, whereas dielectric grease is often made up of silicone and a thickener.

Lubricating grease is a type of lubricant used to keep industrial, automotive, and other mechanisms lubricated. It’s made out of petroleum, vegetable, or synthetic lubricating oil, performance additives, and a thickener.

Zerk fittings, which are small metal male adapters used to funnel grease to an automobile or machine’s parts, are frequently employed in the application of lubricating grease.

Can Vaseline be Used as Dielectric Grease?

Dielectric grease is a translucent substance used to cover and seal electrical circuits in motor industries, electrical circuits, and car applications. Vaseline, often known as petroleum jelly, is a product that is used in the manufacturing industry to prevent corrosion and finish wood.

The Vaseline, on the other hand, is weaker and would not last as long as the dielectric grease. It also won’t hold up in exceptionally high-temperature environments.

Vaseline has a lower melting point than dielectric grease, and if exposed to heat or an electric current, it can burn.

When compared to Vaseline, the cost of dielectric grease is relatively high. And it can’t be used in place of dielectric grease.

Where Shouldn’t You Use Dielectric Grease?

Dielectric grease acts as a conductor of electricity. Silicon-based dielectric grease is composed of the silicon oil and thickener. Polydimethylsiloxane (PDMS) is used as a silicon oil and amorphous fumed silica, stearates, and powdered polytetrafluoroethylene (PTFE), any one of these is used as a thickener. As a result, while using dielectric grease, keep it out of the course of electric current.

If you put dielectric grease in the current route (whether AC or DC), you won’t be able to form an electrical connection between two components, and the gadget won’t work properly.

As a result, dielectric grease should only be used on surfaces where current does not pass.

frequently Asked Questions (FAQs):

Does Dielectric Grease Improve a Connection?

Because dielectric grease isn’t conductive, it won’t help with connectivity. However, it aids in the maintenance of a good relationship.

Is Vaseline a Dielectric Grease?

Dielectric grease differs from Vaseline in that it is created using a silicone base, whereas Vaseline is formed of waxes and minerals. In your car, don’t apply Vaseline.

Is Dielectric Grease Necessary?

No, dielectric grease is not required for any of the connections to function properly.

Can Dielectric Grease Cause a Short?

No, it is not possible. If anything, it will aid in the prevention of shorts.

Can You Remove Dielectric Grease?

Petroleum distillates and chlorinated solvents are recommended to clean up dielectric grease.


Car battery terminals require lubrication to avoid corrosion. It is possible to prevent corrosion on battery connections by using dielectric grease, thereby boosting the car’s performance and longevity. However, while it is not required, it is strongly advised to use dielectric grease on battery terminals. I hope this article has helped you learn more about dielectric grease and its uses.

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