Is It Okay to Jump Start a Car in the Rain?

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As long as the cables are properly insulated, jump starting a car in the rain does not add to the immediate danger of jump starting the car, but exposing the battery to rain or other forms of moisture causes corrosion and reduces the life of the battery. If bluish-white matter accumulates around the terminals following exposure to moisture, it is important to clean them thoroughly to avoid faulty connections.

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