Removing and installing battery
Safety Car
Joined: May 2004
Posts: 4,628
Likes: 397
From: Madison Wi
If both posts are connected and you put a wrench on the + post you create a hazard. If the + wrench touches anything metal as you are removing the post it will short out + to - because all metal in the car is ground -.
If both posts are connected and you put a wrench on the - post you do not create a hazard. If the - wrench touches anything metal as you are removing the post it will not do anything because the wrench is - and the metal in the car is also ground -.
Once the - post is disconnected, you can wrench on the + post without creating a hazard because there is no chance of it shorting out on the ground -. Even if you were to have the + wrench on the terminal and rest it hard agianst a metal component nothing would happen because the electricity would have no way to get back to the - terminal on the battery.
I hope that makes it clear as mud... LOL.
Basically you do not ever want to place a wrench on the + terminal if the - terminal is connected.
If both posts are connected and you put a wrench on the - post you do not create a hazard. If the - wrench touches anything metal as you are removing the post it will not do anything because the wrench is - and the metal in the car is also ground -.
Once the - post is disconnected, you can wrench on the + post without creating a hazard because there is no chance of it shorting out on the ground -. Even if you were to have the + wrench on the terminal and rest it hard agianst a metal component nothing would happen because the electricity would have no way to get back to the - terminal on the battery.
I hope that makes it clear as mud... LOL.
Basically you do not ever want to place a wrench on the + terminal if the - terminal is connected.
Thread Starter
Racer
Joined: Jul 2007
Posts: 440
Likes: 0
From: Orange CA
St. Jude Donor '10
If both posts are connected and you put a wrench on the + post you create a hazard. If the + wrench touches anything metal as you are removing the post it will short out + to - because all metal in the car is ground -.
If both posts are connected and you put a wrench on the - post you do not create a hazard. If the - wrench touches anything metal as you are removing the post it will not do anything because the wrench is - and the metal in the car is also ground -.
Once the - post is disconnected, you can wrench on the + post without creating a hazard because there is no chance of it shorting out on the ground -. Even if you were to have the + wrench on the terminal and rest it hard agianst a metal component nothing would happen because the electricity would have no way to get back to the - terminal on the battery.
I hope that makes it clear as mud... LOL.
Basically you do not ever want to place a wrench on the + terminal if the - terminal is connected.
If both posts are connected and you put a wrench on the - post you do not create a hazard. If the - wrench touches anything metal as you are removing the post it will not do anything because the wrench is - and the metal in the car is also ground -.
Once the - post is disconnected, you can wrench on the + post without creating a hazard because there is no chance of it shorting out on the ground -. Even if you were to have the + wrench on the terminal and rest it hard agianst a metal component nothing would happen because the electricity would have no way to get back to the - terminal on the battery.
I hope that makes it clear as mud... LOL.
Basically you do not ever want to place a wrench on the + terminal if the - terminal is connected.
I work with rocket scientists .. makes perfect sense.
Safety Car
Joined: May 2004
Posts: 4,628
Likes: 397
From: Madison Wi
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Safety Car
Joined: Jul 2007
Posts: 4,333
Likes: 6
From: Louisville Kentucky
If both posts are connected and you put a wrench on the + post you create a hazard. If the + wrench touches anything metal as you are removing the post it will short out + to - because all metal in the car is ground -.
If both posts are connected and you put a wrench on the - post you do not create a hazard. If the - wrench touches anything metal as you are removing the post it will not do anything because the wrench is - and the metal in the car is also ground -.
Once the - post is disconnected, you can wrench on the + post without creating a hazard because there is no chance of it shorting out on the ground -. Even if you were to have the + wrench on the terminal and rest it hard agianst a metal component nothing would happen because the electricity would have no way to get back to the - terminal on the battery.
I hope that makes it clear as mud... LOL.
Basically you do not ever want to place a wrench on the + terminal if the - terminal is connected.
If both posts are connected and you put a wrench on the - post you do not create a hazard. If the - wrench touches anything metal as you are removing the post it will not do anything because the wrench is - and the metal in the car is also ground -.
Once the - post is disconnected, you can wrench on the + post without creating a hazard because there is no chance of it shorting out on the ground -. Even if you were to have the + wrench on the terminal and rest it hard agianst a metal component nothing would happen because the electricity would have no way to get back to the - terminal on the battery.
I hope that makes it clear as mud... LOL.
Basically you do not ever want to place a wrench on the + terminal if the - terminal is connected.
Race Director
Joined: Jan 2006
Posts: 10,554
Likes: 33
From: Not on either liberal coast.
They use a 9v battery...good for a few hours at most with the draw of the electronics. I use one when I'm doing work expected to last 2-3 hours with the battery disconnected.
