Ever heard of the penny trick?

bloopbloob said:

sorry but thats not the case. first, the copper is an electron donor. second, all thats happening is that if you get moist air or water to allow electron flow (electrolyte), the copper steals the electrons from your battery in order to react with oxygen in the air, creating copper(II)oxide. i'm sure this 'trick' showed the copper being oxidized, but that doesn't mean your car isn't being oxidized at the same time. it may work locally, such as for terminals, but don't expect much (if any) result on the rest of the car except maybe a shorter battery life

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bloopbloob said:

sorry but thats not the case. first, the copper is an electron donor. second, all thats happening is that if you get moist air or water to allow electron flow (electrolyte), the copper steals the electrons from your battery in order to react with oxygen in the air, creating copper(II)oxide. i'm sure this 'trick' showed the copper being oxidized, but that doesn't mean your car isn't being oxidized at the same time. it may work locally, such as for terminals, but don't expect much (if any) result on the rest of the car except maybe a shorter battery life

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troyGT03 said:

true to an extent. i have worked as a service tech for fueling equipment for over ten years. older gas stations with steel underground tanks use a very similar method to keep these from rusting for many years. multiple large anodes are attached and impressed current(voltage) is applied to the system. the anodes take the corrosion. google cathodic protection. it works but the anodes are of a large size. not a penny.

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bynummustang said:

I just take the battery out when i'm not using it for a while.

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