When Jumping a Car, Why Negative Clamp to Chassis?

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porschedrifter

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Joined: January 07, 2008

Location: New Jersey, United States

Posted: February 24, 2015 at 5:14 PM / IP Logged

Curious as to why it's recommended while jumping or charging a car's battery, to put the negative clamp onto the chassis and not the actual negative terminal of the battery itself?

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i am an idiot

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Posted: February 24, 2015 at 7:49 PM / IP Logged

It is recommended that the 4th and final connection be the negative connection to the chassis away from the battery to avoid a possible explosion.

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porschedrifter

Member - Posts: 24

Joined: January 07, 2008

Location: New Jersey, United States

Posted: February 24, 2015 at 8:05 PM / IP Logged

Ah OK. So if one was just battery tending, or in my case, having permenant leads to a quick disconnect cable coming off my motorcycle battery terminals for periodic tending, can I connect both to the neg and positive terminals?

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i am an idiot

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Posted: February 24, 2015 at 9:44 PM / IP Logged

Yes.

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burntkat

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Posted: February 26, 2015 at 11:50 AM / IP Logged

That will be fine, as you're not jumpstarting. There won't be a quick inrush of current (aka, spark"). All of my vehicles have these pigtails

"Always listen to experts. They'll tell you what can't be done, and why. Then do it. - Robert A. Heinlein"

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When Jumping a Car, Why Negative Clamp to Chassis?

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