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The Pub For General Automotive Related Talk |
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18-09-2020, 02:14 PM | #1 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,901
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This notably occurs when a battery is undercharging - typically from a bad alternator.
What I’m wondering about is why it seems to be ongoing after the situation is resolved? Is the terminal clamp so chemically imbalanced that it forever remains in a state prejudiced towards oxidisation? It’s a Franco type question, is he un-banned yet? |
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18-09-2020, 02:20 PM | #2 | ||
FF.Com.Au Hardcore
Join Date: Oct 2008
Location: Victoria
Posts: 7,854
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Its is a Franco question, What did Franco do this time?
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______________________________ 2015 Territory Titanium RWD Diesel - SOLD 2016 BMW X5 xdrive 30D Msport Seadoo Challenger 210SE 310HP |
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18-09-2020, 02:30 PM | #3 | |||
FG XR6 Ute & Sedan
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,612
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The answer is here: https://batteryuniversity.com/learn/...internal_short
Quote:
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regards Blue |
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18-09-2020, 02:40 PM | #4 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,901
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18-09-2020, 03:02 PM | #5 | ||
FF.Com.Au Hardcore
Join Date: Aug 2009
Posts: 2,288
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I'd hazard a guess & say it would be caused by the two dissimilar metals being the lead battery post & the battery terminal, which obviously isn't lead, being in contact with an electrolyte, (even water can be a weak electrolyte).
There's probably some form of leakage of gas, or even the battery acid, between the seal of the battery casing & the battery post. |
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18-09-2020, 08:57 PM | #6 | ||
2009 xr turbo,2004 fiesta
Join Date: Oct 2017
Location: Perth wa
Posts: 662
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My bf xr6 does exactly the same thing,battery and alt are perfectly fine,once it starts getting that fuzz youll never get rid of it without replacing the battery and battery terminal/earth lead.
Ive removed the battery terminal and fully cleaned it(removed the fuzz back to clean metal) and then used bi carb and boiling water to neutralise the acid on the terminal and battery posts,it only comes back with avengance. I just regularly clean mine. I have replaced the battery on my bf,made no difference,because i havent replaced the earth lead,its had that fuzz on it so it will always come back...... Had exactly the same issue on my eb ghia v8 as well,until i got new terminals and a new battery,never happened again,it was that bad that it ate the complete terminal away to almost nothing and it snapped off pretty much. Much easier on the eb,the terminals can be replaced,bf needs a whole new earth lead. |
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18-09-2020, 10:37 PM | #8 | |||
FG XR6 Ute & Sedan
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,612
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Quote:
"The terminals of a battery can also corrode. This is often visible with the formation of white powder as a result of oxidation between two different metals connecting the poles. Terminal corrosion can eventually lead to an open electrical connection. Changing the connecting terminals to lead, the same material as the battery pole of a starter battery, will solve most corrosion problems."
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19-09-2020, 07:02 AM | #9 | ||
FF.Com.Au Hardcore
Join Date: Apr 2012
Location: Taromeo
Posts: 10,625
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19-09-2020, 11:17 AM | #10 | ||
FF.Com.Au Hardcore
Join Date: Feb 2007
Location: Perth
Posts: 7,291
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jaydee351 4DV8 |
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19-09-2020, 12:33 PM | #11 | |||
FG XR6 Ute & Sedan
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,612
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Quote:
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regards Blue |
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19-09-2020, 10:55 PM | #13 | ||
Kicking back
Join Date: Dec 2013
Location: Western sydney
Posts: 8,754
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I havent had the green occur on my bfs battery, and ive had that car a long time. It used to happen every while on my first car. Before i changed the terminals, id just wire brush them and they'd be sweet for months. On that car due to big cables for amps, i put on gold plated terminals from jaycar, and they stopped the green mess. Plus, being 17 at the time, having a chrome pipe to a pod filter, proper warm air intake, the gold battery terminals. Yep, pop the bonnet, and ****er spec. I just couldnt at the time justify at the time for the gold plated positive terminal with the built in voltage screen.
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20-09-2020, 09:17 PM | #14 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,901
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One of the terminals that dissolved terribly, did include a lead “cap” or sleeve in direct contact with the battery post. It still dissolved.
A common link between the two failures I’ve experienced, other than alternator breakdown, is that both terminals were pressed metal types. Have a few cars with ancient brass terminal clamps, a bit tarnished but still otherwise good. The forged brass terminal clamps from Projecta, look like they’ll do nicely. I bought a battery cable lug crimper some years back and it lives in my occasional workshop. Worst case I’ll use that to put ends on a cut length of fresh cable. |
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21-09-2020, 08:30 PM | #15 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,815
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Quote:
Usually that build up around terminals is from a damaged and leaking battery terminal. Usually just boiling water that crapola off and get out the battery post cleaner contraption, imagine Satan's fleshlight. I'm hesitant to use battery terminal coatings just in case they end up creating high resistance joins. I see you have a DIN battery, real men use VT-VZ Commodore battery terminals, just ask Michelle from circus HR: https://tridon.com.au/products/Matso...34719/MA100BL2 Last edited by Franco Cozzo; 21-09-2020 at 08:37 PM. |
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21-09-2020, 09:07 PM | #16 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,901
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Good to see your Dad un-banned you. He even might have to come along when we all go for post-lockdown borscht, piroshkiy and too many drinks.
I used these terminals, the negative version: https://www.projecta.com.au/battery-...ged-brass-bolt Had to spread it slightly, and then drill oversize one side of the fastening holes to allow realigning of the pinch bolt. |
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21-09-2020, 09:24 PM | #17 | |||
FG XR6 Ute & Sedan
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,612
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Quote:
https://www.projecta.com.au/battery-...ion%20Terminal
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24-09-2020, 06:57 PM | #18 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
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Quote:
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24-09-2020, 07:18 PM | #19 | |||
FG XR6 Ute & Sedan
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,612
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Quote:
These which also have fuses, can also be very useful: https://www.projecta.com.au/battery-...ution-terminal
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24-09-2020, 07:19 PM | #20 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,901
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Have you seen the similar one with triple fusing, also from Projecta?
Edit: AB is beating me again! |
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24-09-2020, 07:56 PM | #21 | ||
Thailand Specials
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25-09-2020, 06:36 AM | #22 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,901
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That clamp you linked is very similar to OEM fitment on the 147GTA Alfa.
Also the first aftermarket one I’ve seen that locked into the indexing holes atop a DIN battery. |
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