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Depends on the material that is corroding. If you're speaking of generic lead-acid automotive batteries white corrosion is usually lead or zinc sulfate crystals, Aluminum connectors corrode to aluminum sulfate, & copper connectors produce blue and white corrosion crystals. Also, the steel bolts on these connectors tend not to corrode too much because of the reactivity of the other metals in the terminal. Being of a higher reactivity they corrode more than the steel rusts.

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15y ago

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