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Old 09-21-2015, 10:28 AM   #11
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Originally Posted by Evereddie View Post
You will have no damage. If you shorted between the positive battery terminal and ground, via your ring, no critical trailer wiring or devices was involved, just the ground cable from battery to the frame. It's just like shorting across the battery. If it was for more than a few seconds you might have damaged the battery.

In my youth I had a battery on my workbench with a battery charger hooked to it. Bumped the cable and the charging clamp twisted down and hit the other battery post. After about 2 seconds the top of the battery blew off. Since then I have always had a cautious respect for the power of a car battery.
Mine's a renewed respect. I have no shortage of experience with working with batteries, but I do tend to let safety precautions slide in favour of speeding things up. Stupid...

After I let go of the wrench it stayed on the post touching the rock guard, for probably 5 seconds. I will definitely be putting a new on next spring.

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Old 09-21-2015, 11:28 AM   #12
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I didn't think the story was true, but my mechanic told me about some guy he knew fishing around under a dash shorting wires with his wedding ring. It turned red hot and he jerked back and peeled all the skin off his finger. You were lucky.

A 5 second dead short on the terminals with a wrench could have caused some damage - there would have been hundreds of amps flowing through the plates. Probably the easiest way to tell is if the electrolyte in any of the cells has gone cloudy or if the fully-charged rest voltage is below 12.8. Just be sure to remove your jewelry and wear eye protection when you check.

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Old 09-21-2015, 04:38 PM   #13
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I almost lost my finger the same way when I was first starting to work on cars. Gold is a very good conductor!
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Old 09-21-2015, 05:20 PM   #14
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My solution to this potential problem is to never use a wrench to remove battery cables.

I use a socket and a composite driver from Harbor Freight. It's one of the best $6 RV tools I have.

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Old 09-21-2015, 06:52 PM   #15
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Originally Posted by pmsherman View Post
My solution to this potential problem is to never use a wrench to remove battery cables.

I use a socket and a composite driver from Harbor Freight. It's one of the best $6 RV tools I have.

That is a fantastic suggestion!
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Old 09-22-2015, 12:22 AM   #16
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Your very lucky the battery did not explode! When I was a teen I did the same thing shorting out a car battery. The battery exploded spraying acid every ware. God smiled on me and I was not hurt. My clothes were destroyed along with the cars paint. Hope the finger heals fast. My work will not let me ware the ring of fire at work for safety reasons as I work with electricity there.

Get healed up Tim

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