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What can cause the positive battery terminal in parallel…

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What can cause the positive...
What can cause the positive battery terminal in parallel connected batteries to completely corrode away?
Submitted: 11 months ago.Category: Boat
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Answered in 1 minute by:
9/10/2017
Marine Mechanic: Tan, MerCruiser Certified Technician replied 11 months ago
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11,412
Experience: 40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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Hello, I'm Tan. Welcome to JustAnswer. I'm reviewing your question and will reply momentarily.

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Marine Mechanic: Tan, MerCruiser Certified Technician replied 11 months ago

Salt water corrosion loose connections will cause extreme corrosion . If the terminal was loose the cable end could have gotten hot enough to melt the cable ends. Lack of maintenance of terminals they do corroded. Can you post a pic of the terminal.

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Marine Mechanic: Tan, MerCruiser Certified Technician replied 11 months ago

Here's an image of typical corrosion. https://i.stack.imgur.com/OXJOe.jpg

The reason one battery can corrode more than another is the health of the battery. If the battery has a weak cell that battery will get hotter than a good battery producing more gas and the corrosion.

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