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Battery terminal corrosion

Battery terminal removal

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Make sure you have radio security code before removing battery leads. Remove battery leads, -ve lead first.
Clean grey oxide coating from battery terminal posts and inside battery lead terminals with abrasive pad (eg. Scotchbrite coarse) or abrasive paper and wipe clean with cloth. Liberally coat battery terminal posts and inside of lead terminals with general purpose grease or petroleum jelly. Install battery leads to battery, +ve first then -ve, and tighten securely. Do not over tighten. Spread excess grease over top of battery post and lead terminal to ensure all moisture is excluded. Replace terminal covers. Should be good for a long time.

Posted on Dec 03, 2012


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Posted on Jan 02, 2017

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SOURCE: how to remove negative battery terminal

dont remove it if your radio has a thing called theftlock or youll have to take the car to a certified GM dealer to get the radio unlocked but you can still clean it with a cup of baking soda and warm water mixed and scrub it with an old toothbrush

Posted on Apr 26, 2009

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SOURCE: positive terminal keeps getting corroded even after 3 weeks.

Try keeping the terminal far away from any moisture and dirt. In fact isolating it may not be a bad idea. Try getting a battery box for it or sealing off the existing one, just make sure to use a drain tube and vent. Some stores have battery terminal isolators, these are less effective but can help. There is also a battery terminal sealant spray that may be helpful if you cannot get/use a battery box. Clean the terminals thoroughly, spray the terminal sealant, and use the battery box for a three way attack. This is especially use full in harsh climates. These methods can also be used on remote battery terminals that are on some cars.

Posted on May 04, 2009

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SOURCE: Last week i removed the

hope this helps

Posted on Sep 16, 2010

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My headlights won't come on or dash won't light up. Inside my 2000 Ford Expedition the lights won't come on. Truck won't even start. Is my battery dead?

The battery may not necessarily be dead. Your description sounds like there might be an interruption in the electrical path from the battery. The alternator on a car/truck replenishes the battery. If the leads going to the battery are loose or dirty, the battery will not be replenished and will eventually be drained.
  • First, check the leads on the battery. Check to see if they are loose, and more importantly, if there is any corrosion on the leads or battery terminals. If the battery leads are tight, but have visible signs of corrosion, the corrosion is interfering with the electrical flow from the battery. Remove the negative battery terminal. If there is corrosion (greenish or whitish substance) inside or outside the battery terminal or lead, it can be removed with 80-120 grit sandpaper until the lead/terminal is shiny, then reattach the lead to the battery and tighten snug. Perform the same check and cleaning on the positive terminal.
  • Try to start the car. If it won't turn over, but there are lights (even if dim), the battery is weak. Jump the battery from another car and start it. Let it run for about 10 minutes to replenish the battery level. I hope this helps you.

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My battery on a 2012 Chrysler 300 had some kind of grayish blue build up on the red positive connection. Any idea why?

Your positive battery post has lost its seal with the battery case. This lets a small amount of gas to escape from the battery.
That gas causes the corrosion that you have seen on that terminal. You can get a battery terminal spray that coats the terminal in a waxy/ grease that will stop this happening.

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How do i change the battery in a Peugeot 308

If you buy a new battery, most stores will help you replace it. you will need a ratchet set to remove the positive and negative ends of the terminal. you should remove the positive end first. and for the new one, add the negative end first.

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1 Answer

How to keep battery corrosion of battery

The simplest method is to use a weak solution of baking soda and water. Mix it up in an old plastic cup, and using a cheap small paintbrush apply it to the terminals and top of the battery. It will create a whitish foam as it neutralizes the battery acid, and this can be washed away with a garden hose. Once the outside is clean, remove the battery terminals and give them a good cleaning, using a stiff wire brush or some sandpaper, so that the mating surfaces of the connectors are shiny. If the bolts are rusty or corroded, replace them. Once you've tightened up the newly-cleaned terminals back on the battery (do the positive first and negative last), give it one more application of the baking soda solution, then rinse well with water and either sun dry it or blow dry it with a hair dryer. Some folks then spray on a commercial battery terminal protectant; but if you clean the battery and terminals every time you change the oil, your battery will be happy.

Continued heavy amount of corrosion could indicate a leak in the top of the battery, venting the corrosive gas produced when the battery charges, so keep an eye on that. And lastly, if the battery is being overcharged by a defective voltage regulator then it will outgas and show corrosion.

Happy Motoring...

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1 Answer

Can corosion on a battery keep it from starting or getting rightncharge to jump vehicle

Yes, is the short answer.
Excessive corrosion on a battery's terminals, or dirt between the battery's two terminals can actually consume power. All corrosion should be removed. Some advise to smear vaseline on any terminals and connectors, to reduce corrosion buildup.

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1 Answer

How do I replace battery cables on a 1993 ford escort?

From what I can determine, the battery cables are part of an engine sub harness. Cost of the part is in the $300 range. However, I suspect your real problem is the connectors on the cables which attach to the battery. They should be cleaned very well, free of all signs of corrosion and tightened securely. There is a common problem of the terminals corroding and cracking / breaking. They can be replaced easily and cheaply by cutting off the old terminal(s) , stripping back (or leaving exposed) about a 1/2" of wire. If wire has any corrosion, sand down to remove corrosion. The replacement terminals should be the clamp on type that you insert the wire into the clamp connection on back of new terminal and tighten it down securing the wires to the new terminal, then attaching them back to the battery. Cost around $10, buy some anti-corrosion spray for batteries also and spray them well after installation to battery to prevent this from happening again.
NOTE: Negative or black (if color coded) should come off first. Then remove positive (red) cable. Remove both cables from battery before performing repairs. Positive (red) cable goes back on first, negative cable (black) goes on last. This will prevent you from damaging your computer system and eliminate the chance of arcing (sparking) while effecting repairs.
Hope that helps!....Mike

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Can't start the engine. Seems to have a good battery in place. All lights are working. When I try to start the engine, all lights flashes and the there's a light with a car and a lock that apprears.

Sounds like a theft deterrent security feature is operating.
Causes of this could be due to putting the wrong key or something other than a key, into the ignition.
You will have to call your dealer to get instructions on what to do, it's usually fairly simple.

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1 Answer

I have bought the correct battery for my 1993 jeep wrangler and now need to fit it but don't know how! Any help?

1. Place battery into battery holder and bolt on hold- down bracket.
2. Remove any protective covers that may be on the terminals of the new battery.
3. Clean the cable connectors and the battery terminals (sandpaper, perhaps).
4. Attach positive (red) cable to positive terminal on battery and tighten.
5. Attach negative (black) cable to negative terminal on battery and tighten.
6. Apply anti-corrosion material to battery terminals. (Vaseline can be used, but it melts too easily. High temperature bearing grease or anti-corrosion material expecially made for batteries is better.)
7. You should be ready to roll.

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1 Answer

How to repalce the battery

This is simple to do once you find the battery. Remove the rear seat (pull up on the front of it to release) to expose the battery. Then remove the Negative terminal followed by the Positive terminal. Finally remove battery hold down bolt to free the battery. ALWAYS wears eye protection when working on/near/with the battery.

Note- The seat belt configuration in the seat before removing... don't forget the seat belts when installing.

Use battery terminal protector on the terminals. Thoroughly inspect the terminals for signs of corrosion. Replace as necessary.

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