Car Battery Corrosion

Car Battery Corrosion

While most people wash their car regularly, unfortunately they neglect most of the car’s internal vital components such the battery and cables. You have to remember that to avoid car battery corrosion, it vital to check regularly your battery terminals and cables to see if they are corroded or loose

Car battery corrosion can cause much more serious problems than just a slow start. The “invasion” of corrosion on the battery terminals is a rather extreme example. But even minor corrosion may reduce the output voltage of the alternator to 30%. This can put a lot of strain on your charging system and cause premature failure.

You can avoid premature failures by replacing your old corroded terminals. It will take you just a set of keys, a hacksaw and about an hour of your time.

Isn’t that beautiful? it will cost you less than $ 20 in total.

Inspect cables and battery terminals

First turn off the engine before removing terminal caps

Begin by disconnecting the negative battery cable, which is the black one with minus sign.

Use a wrench to loosen the retaining nut and pull it upward to remove it , while twisting the connection forward and backward. If you find it is still hard to come off, tap it lightly with a small hammer. As soon as you finish removing the negative cable, disconnect the positive cable the same way.

Cleaning battery terminals

To clean the battery posts and the cable terminals, just use a small wire brush Make sure you clean both the outside and the inside until it appears to be free from corrosion and clean

To remove any loose corrosion that you see, use a small paintbrush .If you find any of the cable terminals corroded, use some baking soda and water to try to clean them.

After you finish, try to start the car,

If the car doesn’t start, you might have to make the decision to replace to your terminals.

How to disconnect a car battery

Before you disconnect a car battery, you have to take a few precautions to be on the safe side.

You have to remember that a battery has corrosive agents that can produce flammable gas

-Turn off the engine

-Wear gloves to protect your hands and safety googles to protect your eyes

It is important to learn how to disconnect the battery terminals in the right way.

Disconnect battery terminals

To be able to disconnect the battery terminals you’ll need must likely a socket wrench and socket wrench extender

-find the negative terminal, it is generally covered with a black cap or if not, you have to look for the minus sign “-“ for the connector

-figure out what socket size wrench you’ll need to take off the nut on the negative connector

-take the socket wrench to loosen the nut on the negative terminal, then disconnect the negative terminal and set aside away from the battery. Make sure to always respect this order by disconnecting the negative terminal first

The negative battery terminal is your ground, it will keep you from getting electrocuted

-Now loosen the nut on the positive terminal and remove it.

Remember: the positive terminal is usually covered with a red cap and it has a plus sign “+”

Replace battery terminals

To replace the battery terminals you will need a wire cutter or hacksaw to cut the cable wire next to the corroded terminal. If you notice that the wire is deteriorated severely just trim it away

Measure the wire to make sure it can still reach the battery after you trim it. Then strip off around 1 inch of wire insulation before reconnecting any of the cables.

In order to install the new terminal, you have to remove the retainer crews then insert the wire in the right place beneath.

After you have finished you have to just put the terminal back together before tightening the screws.

check out the video to get a live demonstration

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