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Blue buildup on battery posts

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Clueless Mechanic
New User

Oct 30, 2021, 5:13 PM

Post #1 of 5 (879 views)
  post locked   Blue buildup on battery posts  
I have a blue buildup on my battery posts and have no clue why or how to prevent it. I cleaned it all up in June/July, coated it multiple times with battery post protector and it is back worse than ever.

This is a 2008, Nissan 2.5 S

Here's a link to a couple pictures: https://1drv.ms/f/s!AjYnefG2siYSizzsQkfrthrRnidG

Should I be concerned?Should I be doing something to prevent this?
Thank you in advance for your advice.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 30, 2021, 5:38 PM

Post #2 of 5 (874 views)
  post locked   Re: Blue buildup on battery posts  
That is corrosion, probably made worse by acid leaking up through the battery post.

Short of replacing the battery and terminals you would have to clean it real good and then coat it with grease after it's back together. Dip the terminals in a cup of boiling water and pour some over the battery posts before putting it back together.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Clueless Mechanic
New User

Oct 30, 2021, 6:04 PM

Post #3 of 5 (869 views)
  post locked   Re: Blue buildup on battery posts  
Once cleaned, what type of grease should I use exactly?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 30, 2021, 6:06 PM

Post #4 of 5 (866 views)
  post locked   Re: Blue buildup on battery posts  
Not real important. Something thick.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



03frontier
User

Dec 3, 2021, 1:16 PM

Post #5 of 5 (700 views)
  post locked   Re: Blue buildup on battery posts  
In Reply To
I have a blue buildup on my battery posts and have no clue why or how to prevent it. I cleaned it all up in June/July, coated it multiple times with battery post protector and it is back worse than ever.

This is a 2008, Nissan 2.5 S

Here's a link to a couple pictures: https://1drv.ms/f/s!AjYnefG2siYSizzsQkfrthrRnidG

Should I be concerned?Should I be doing something to prevent this?
Thank you in advance for your advice.
holy sh** - i had the same problem with my old truck, but not nearly as thick as that! hopefully you get it resolved soon





 
 
 






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