Originally Posted by two stroke mick
Does disconnecting the battery reduce corrosion on an outboard?
And if so does it matter if you disconnect the positive or negative battery lead?
In THEORY no, it shouldn't make any difference. BUT, unless you have perfect wiring, no current leaks, perfect insulation (dry) then you can get stray currents that can accelerate corrosion. I've always had (good) battery isolators fitted to my boats. It won't hurt, I'd disconnect the +ve as close to the battery as possible.
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