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12-03-2018, 10:59 PM
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#1
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Newbie
City: Nanaimo, BC
Join Date: Jun 2013
Posts: 2
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Battery terminal corrosion
To clean terminals and cable lugs it is often written (or said) that baking soda solution is the way to go. What is the optimum solution? How much baking soda per unit volume?
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12-03-2018, 11:08 PM
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#2
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,563
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Greetings,
Welcome aboard. Soda? Try a heaping Tbsp in 1/2 cup of water. Do NOT allow any to get into cells. Have LOTS of paper towels handy and wear safety glasses.
__________________
RTF
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12-04-2018, 06:41 AM
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#3
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
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After you clean most of it up, lightly spray the terminals and connectors with Corrosion X.
CorrosionX
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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12-04-2018, 07:40 AM
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#4
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Guru
City: Southern Maine
Vessel Model: Prairie 36 Coastal Cruiser
Join Date: Dec 2012
Posts: 2,717
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Somebody (maybe here) turned me on to " NCP2":
I've only used it since last year, so I can't yet say how effective it is, but so far so good. You brush it on, and it leaves a thick, somewhat sticky layer of material on the terminals.
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12-04-2018, 05:35 PM
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#5
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Senior Member
City: St. Petersburg
Join Date: Oct 2007
Posts: 421
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Keep the battery tops neutralized with baking soda/water and thoroughly dry and corrosion of the terminals will be a thing of the past. No need for CRC or any other product.
__________________
Charlie Johnson
ABYC Master Technician
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12-05-2018, 05:25 AM
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#6
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Guru
Join Date: Oct 2007
Posts: 22,553
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Petroleum jelly has worked forever , cheap and probably already onboard.
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12-05-2018, 07:27 AM
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#7
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Guru
City: Annapolis
Vessel Name: Ranger
Vessel Model: 58' Sedan Bridge
Join Date: Aug 2013
Posts: 7,087
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What causes battery terminal corrosion?
-Chris
__________________
Chesapeake Bay, USA
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12-05-2018, 09:39 AM
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#8
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Guru
City: gulf coast
Join Date: Jun 2014
Posts: 3,440
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A usual cause is out gassing during charging. The battery vents gasses and aerosols contain sulfuric acid. Older batteries and over charging cause more gassing.
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12-05-2018, 08:09 PM
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#9
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Guru
City: Edgewater, MD
Vessel Name: Catalina Jack
Vessel Model: Defever 44
Join Date: Nov 2011
Posts: 3,585
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Quote:
Originally Posted by CaptTom
Somebody (maybe here) turned me on to " NCP2":
I've only used it since last year, so I can't yet say how effective it is, but so far so good. You brush it on, and it leaves a thick, somewhat sticky layer of material on the terminals.
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Kopr-Kote by Jetlube does the same thing and doubles as a terrific anti-seize compound.
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12-11-2018, 01:19 PM
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#10
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Newbie
City: Nanaimo, BC
Join Date: Jun 2013
Posts: 2
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Batty terminal corrosion
Thanks RT Firefly. I interpret the unit "Tbsp" as "tablespoon". This non-ISO unit will be researched in Wife's kitchen.
All others who have suggested their favorite cures are also thanked. I do not have enough batteries to try them all !
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12-11-2018, 02:25 PM
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#11
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,563
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Greetings,
Mr. GS. There is no exact amount of baking soda (NaHCO3) to be used. This, as my analytical chemistry prof used to say, is "bucket chemistry". ANY concentrated solution will neutralize the acidic corrosion on battery terminals. As I mentioned, be very careful no solution finds it way into the battery cells as battery death will occur.
__________________
RTF
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12-11-2018, 08:40 PM
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#12
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Guru
City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 4,308
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Quote:
Originally Posted by bayview
A usual cause is out gassing during charging. The battery vents gasses and aerosols contain sulfuric acid. Older batteries and over charging cause more gassing.
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Look very carefully at your vent caps. A good quality battery will have caps that vent out the side. By aiming the venting away from the terminal posts you will prevent corrosion issues. On the other hand if you install the cap backwards you end up aiming the gasses right at the terminal post, there by creating a huge corrosion mess.
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12-15-2018, 11:01 PM
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#13
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Guru
City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 4,414
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If one post or terminal shows corrosion again while the others stay clean then be aware the seal between the battery case and that post may be failed. That will allow the gasses and mist to exit right next to the post.
I've seen that happen a few times over the years. Usually caused by hamfisted terminal removal.
Get your self a decent battery terminal puller and save the batteries.
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12-15-2018, 11:39 PM
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#14
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Guru
City: San Francisco
Join Date: Apr 2018
Posts: 3,093
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Best solution is to replace the batteries with AGM (or any VRLA) - problem gone.
With baking soda, just make a wet paste thick enough not to run all over the place and brush it on with an acid or flux brush. Wait till it quits sizzling. Then clean off with water.
There are things called recombinant caps which will reduce outgassing and water loss, they replace your battery caps.
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12-16-2018, 12:01 AM
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#15
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Guru
City: Sydney
Join Date: Jul 2015
Posts: 1,646
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Vinegar works well .
But the white furry stuff is gods warning the battery's are about to die
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