How Do You Deal With Battery Terminal Corrosion?

How To Prevent Battery Terminal Corrosion?

How Do You Deal With Battery Terminal Corrosion?The major reason for car battery terminal corrosion is the sulfuric acid that exists inside them. Stopping battery terminal corrosion is one of the best ways to keep your battery working for as long as possible. Terminal protection battery terminal corrosion is caused mostly by acidic vapors produced by charging the batteries.

Battery terminal corrosion is caused by battery acid leaking out, which can be caused by extreme stress on the battery and age. Battery terminal corrosion is one of the leading causes of premature battery failure. Traditionally, battery terminal corrosion is a major safety and cost problem, especially in marine applications and wet environments.

Battery terminal corrosion can cause loss of proper electrical contact that robs the vehicle of power and leads to battery drain and improper battery re-charging, these problems become very evident during colder weather and engine start-up.

What Causes Automobile Battery Corrosion?

  • There are several factors that cause automobile battery corrosion–high temperatures, improper use and wear and tear. Fortunately, there are several steps that you can take to avoid dealing with this problem.

External Automotive Battery Corrosion

  • The most damaging factor that causes automobile battery corrosion is actually on the battery terminals. Hydrogen gas is admitted by the sulfuric compound inside of your car battery, and very little of this gas is actually vented out through the grill or other openings of the hood. While most cars with a modern battery do not experience this issue, it still does occur and can cause a large amount of corrosion to build up on your battery terminals.

Internal Automotive Battery Corrosion

  • While battery corrosion on the terminals themselves is a common cause of automobile battery corrosion, other types of corrosion exist within the battery itself. Acid usually will appear on the outside of your battery if there is a crack inside the battery. When you encounter acid, you will need to replace your battery as soon as possible, as the battery acid that leaks out is dangerously toxic. See more here.

It is always good to check the battery terminals for corrosion as battery terminal corrosion can sometimes not allow the battery to charge while the engine is running.


Clean battery terminals can keep your car from stalling at the most inopportune time. Knowing how to clean battery terminals and the connection points will free them of residue and keep your car running.

Here’s how to clean battery terminals in six steps.

1.Locatethe Battery
Most car batteries are located underneath the hood and are on the left or right side of the engine bay. With some models, such as in the Chevrolet Cobalt, Hyundai Sonata Hybrid and the BMW 5 Series, the battery is located in the trunk.

2. Lift theTerminalCovers
Plastic or rubber covers protect most batteries and must be removed to access the clamps that connect the cables to the terminals. A build up of residue, identified as a white powder, must be cleared away. Don’t forget to put on a pair of work gloves and don your safety glasses.

3.Disconnectthe Car Battery
Each clamp fastened to the terminals must be disconnected. You will do this by loosening the negative clamp first, followed by the positive clamp. If excess corrosion is present, you may need to use metal pliers to disconnect. Check more here.

If left undetected, battery terminal corrosion will eventually result in the inability to start the lawn mower’s engine or prevent the battery from accepting a charge.

How to Clean and Prevent Battery Terminal Corrosion

Your first reaction is to pound the steering wheel and curse the darkness. But it should probably be to grab a battery terminal cleaning brush and pop the hood. In many cases, cleaning the white, flaky deposits from the battery terminals is all you need to restore the flow of electricity and summon your car back to life.

What is that flaky stuff, anyway?
A battery is just one big chemical reaction, and the white, scaly deposits on the posts are simply one of the byproducts. A typical car battery is made up of individual cells, with each housing alternating plates of lead and lead coated with lead dioxide submerged in a sulfuric acid solution. This causes a chemical reaction that releases electrons, providing the juice that spins the starter motor, powers the radio and keeps the lights on, among other functions.

How to prevent corrosion
I like preventing battery-terminal deposits even better than cleaning them. Battery-terminal grease can be applied to the terminals to help prevent corrosion. It’s available at any auto parts store and usually comes in a little ketchup-like packet. Another great option is AMSOIL Heavy-Duty Metal Protector. It creates a protective coating on terminals that wards off corrosion. Plus, you can use it as vehicle undercoating to guard against rust. Read full article here.

Battery Terminal Corrosion Is Surprisingly Common

Connection and battery terminal corrosion are also common complications of battery fluid evaporation. Automotive battery terminal corrosion can be caused by a number of different factors. Over time and use, corrosion can form on your car battery’s terminals in, on, and around the battery cable ends.  If enough corrosion forms between the cable ends and the terminals, it can actually prevent the battery’s power from flowing from the battery through the cables.

Battery terminal corrosion can happen due to the overflow of sulfuric acid onto them. Corrosion shows up in the form of a crusty, fuzzy-looking substance that leaves a mess on your car battery terminals and cable ends.Corrosion on battery connections can be cleaned off using a couple of different methods, and you can help protect your battery from frequent corrosion, contact us here: (951) 245-8115.

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