How to Replace a Corroded Car Battery Terminal

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Find the nut located on the side of the terminal.
Using an adjustable wrench, rotate the nut counterclockwise to loosen it.
Use an appropriately-sized wrench or socket, not channel locks as shown in the photo.
You do not need to loosen the nut all the way off the bolt, but just enough to loosen the terminal's grip on the node.

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