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TIP for the future. Do not use sand paper to clean the terminals as the grains get stuck in the soft post and reduce the contact area. Regards Peter
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Perhaps a conductive protective coating that wasn't stopping the fur?
I changed battery few months ago, the red coating wasn't there before.
The coating was on the +ve screw terminal on the connecting lead (not the terminal on the battery itself).
I think the fur build-up is corrosive, guess it's corroded done something to the screw terminal metal.
Anyone seen this before ??
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If your terminal is brass, or plated brass it's likely that the zinc has reacted and left a copper rich surface (brass is an alloy of copper and zinc). Not a real problem as copper is conductive.
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If your terminal is brass or plated brass it's likely that the zinc has reacted and left a copper rich surface (brass is an alloy of copper and zinc). Not a real problem as copper is conductive.
Yes, the +VE terminal now looks a golden brass colour where it reacted & I rubbed off the red oxide type coating.
Before the reaction, I think it looked silver colour (like the -VE terminal where there was no reaction).
I didn't notice any problem starting car when this thick red oxide type coating was present on +VE terminal.
If it happens again I'll check its conductivity with multimeter.
Edited by peter973 on 21/06/2009 at 11:48
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