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In what order do you disconnect then reconnect your battery cables?

  • Disconnect positive, then negative. Reconnect negative, then positive.

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Discussion Starter · #1 ·
If you replace your battery, or simply remove it or completely disconnect it for whatever reason, in what order do you disconnect then reconnect your battery cables?

Feel free to comment on your logic. :)
 

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NP -> PN.

Because my father, the master electrician taught me so. As I got old enough to understand it makes sense to me.
 
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NP -> PN.

Because my father, the master electrician taught me so. As I got old enough to understand it makes sense to me.
Less chance of shorting the battery out with your wrench and blowing yourself up with hydrogen gas.😲
 

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There is no choice for:

What ever, I've done it all ways and still do.
 
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Are there any advantages to disconnecting them a certain way? I know that it makes a difference when you reconnect them because of sparks etc.
 

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So next time do the 4th choice.
 
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because electrons flow from negative to positive thus being so close to the source of charge (battery) cutting the circuit at the negative terminal eliminates the arching or spark you notice when doing the positive side
 

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because electrons flow from negative to positive thus being so close to the source of charge (battery) cutting the circuit at the negative terminal eliminates the arching or spark you notice when doing the positive side
If I think about it, I do the 4th choice. Don't always happen that way though.
 

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because electrons flow from negative to positive thus being so close to the source of charge (battery) cutting the circuit at the negative terminal eliminates the arching or spark you notice when doing the positive side
False. Electrical engineer here. Makes no difference whatsoever whether you disconnect the positive or negative, the amount of arcing would be the same. Might want to learn about Kirchhoff's current law. It is done for safety reasons; almost every vehicle built since the 1960s is negative ground, and there's no danger if you bump the frame with the wrench while you're removing the negative terminal.
 

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False. Electrical engineer here. Makes no difference whatsoever whether you disconnect the positive or negative, the amount of arcing would be the same. Might want to learn about Kirchhoff's current law. It is done for safety reasons; almost every vehicle built since the 1960s is negative ground, and there's no danger if you bump the frame with the wrench while you're removing the negative terminal.
There is no choice for:

What ever, I've done it all ways and still do.
Your answer goes back to my first post.

It's not- do it wrong- die, do it right- live.
I do it what ever way, it doesn't matter. Why this week alone 3 of my friends died in explosions from simply changing their battery! SMH. I'm being sarcastic.

KInda like peoples attitudes with these f'ing face masks for this f'n virus.
Mask- live, no mask? Die ? ?

Licensed medical provider here.

If you are under 65y/o- the mortality rate is ~ 1/300K!
 
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Your answer goes back to my first post.

It's not- do it wrong- die, do it right- live.
I do it what ever way, it doesn't matter. Why this week alone 3 of my friends died in explosions from simply changing their battery! SMH. I'm being sarcastic.

KInda like peoples attitudes with these f'ing face masks for this f'n virus.
Mask- live, no mask? Die ? ?

Licensed medical provider here.

If you are under 65y/o- the mortality rate is ~ 1/300K!
The potential danger is more likely with improper jumper cable connection/disconnection order or procedure.

And.....
7C1D8EA3-852B-4C38-BDB1-48F4195C0650.jpeg
 

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Your answer goes back to my first post.

It's not- do it wrong- die, do it right- live.
I do it what ever way, it doesn't matter. Why this week alone 3 of my friends died in explosions from simply changing their battery! SMH. I'm being sarcastic.

KInda like peoples attitudes with these f'ing face masks for this f'n virus.
Mask- live, no mask? Die ? ?

Licensed medical provider here.

If you are under 65y/o- the mortality rate is ~ 1/300K!
RIP to your friends...
Hopefully they were wearing masks when they exploded.... and I bet if they lived in California or NY they were added to the Covid body count.

/s
 

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Change in flux in windings could generate small current in reverse direction. It could cause damage to sensitive sensor. So another vote for NP and PN.
 

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Discussion Starter · #18 ·

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Discussion Starter · #20 ·
Lol at photo! Lol
Also, the angle makes it look like the leverage bar on the C-clamp is about to make contact with the negative post in 3, 2, 1...
 
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