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For battery terminal connections, should I use the wing-nut bolt on the terminal post or should I use terminal-post clamps?

April 26, 2017battery bolt Clamps terminal

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For battery terminal connections, should I use the wing-nut bolt on the terminal post or should I use terminal-post clamps?

1 Answer

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Terminal-post clamps are best because they offer more contact surface area to handle the high current and will stay tight. If you decide instead to use the wing-nut bolt on each terminal post, make sure you use the correct size cable terminal end, usually a 5/16 hole and that you use a spring-type lock washer under the wing nut. If you fail to use the lock washer, the wing nut will become loose, contact resistance will increase rapidly, heat will increase dramatically and the terminal post will melt not pretty.