Battery Terminal Corrosion? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68 Suburban · 01-10-2003, 04:52 PM

On one of my vehicles I have a side post battery that keeps corroding the battery terminal from inside the battery! The dealer replaced the battery and the cable less than 2 years ago and it has happened again. When I went to take off the positive cable, the terminal that is mounted on the battery just broke away and was all coroded inside? What could be causing this to happen repeatedly?

Longhorn Man · 01-10-2003, 08:03 PM

Interesting. That is the exact reason GM went to the side post...to stop the corrosion.
Is there a chance your battery is getting wet?
Have you tried any of the terminal cleaner and then terminal protector? (both availabel at napa)
Other than the water/dirt idea...I'm drawing a blank.

68 Suburban · 01-10-2003, 08:45 PM

Andy, this is AZ, it doesnt get wet much

The cable about an inch from the connection is all corroded.

Longhorn Man · 01-10-2003, 08:47 PM

Forgot about you bein in arizona.

*Piston* · 01-10-2003, 08:52 PM

More than likely it was the battery to begin with. They form small leaks near the terminal. All it takes is a small amount of acid combined with o2 and metal to make a huge mess. Broken terminals (battery side) happens alot and can be a PITA to get the remainder of the terminal off the cable.
You can buy neutralizer pads to counter the effects of the acid but if there is a leak at the terminal, those wont even help.

01-10-2003, 04:52 PM	#1
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Battery Terminal Corrosion? On one of my vehicles I have a side post battery that keeps corroding the battery terminal from inside the battery! The dealer replaced the battery and the cable less than 2 years ago and it has happened again. When I went to take off the positive cable, the terminal that is mounted on the battery just broke away and was all coroded inside? What could be causing this to happen repeatedly?

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01-10-2003, 08:03 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Interesting. That is the exact reason GM went to the side post...to stop the corrosion. Is there a chance your battery is getting wet? Have you tried any of the terminal cleaner and then terminal protector? (both availabel at napa) Other than the water/dirt idea...I'm drawing a blank.

01-10-2003, 08:45 PM	#3
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Andy, this is AZ, it doesnt get wet much The cable about an inch from the connection is all corroded.

01-10-2003, 08:47 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Forgot about you bein in arizona.

01-10-2003, 08:52 PM	#5
Piston Account Suspended Join Date: Oct 2002 Location: Olathe, KS Posts: 2,301	More than likely it was the battery to begin with. They form small leaks near the terminal. All it takes is a small amount of acid combined with o2 and metal to make a huge mess. Broken terminals (battery side) happens alot and can be a PITA to get the remainder of the terminal off the cable. You can buy neutralizer pads to counter the effects of the acid but if there is a leak at the terminal, those wont even help.



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