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Jumping a Car Battery
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CarGuru > Technology > Jumping a Car Battery 29 January 2005 14:00:58

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Jumping a Car Battery

Buck Turgidson 28 January 2005 18:30:49
 Just want to confirm the procedure to jump a battery - connect the 2
positives (red), then the negatives (black). Then disconnect starting with
the black?

For some reason, I had it in my mind that you connect the black first to
prevent an "open ground", but I guess I am wrong.

Appreciate any help.


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Jan Kalin 28 January 2005 18:51:39 permanent link ]
 In article <qtupc2-9o3.ln1@tur­f.turgidson.com>, Buck Turgidson wrote:>Just want to confirm the procedure to jump a battery - connect the 2>positives (red), then the negatives (black). Then disconnect starting with>the black?

Yes. The idea is to prevent accidental short circuits. Remember that both
the body and engine are connected to the (-) pole of the battery. Not
only can you make a short circuit by shorting the battery terminals, but
also by attaching a lead to a (+) terminal and the other end to any metal
part.

By first connecting the (+) lead you are then left with (-) lead that you
can, e.g., accidentally drop on metal, and not create a short circuit.

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William R. Watt 28 January 2005 19:43:46 permanent link ]
 
The method as I memorized it is "postive-to-postive­, negative-to-ground"­.
Then start the engine of the car with the good battery before starting the
car with the bad battery.

"Buck Turgidson" (jc_va@hotmail.com)­ writes:> Just want to confirm the procedure to jump a battery - connect the 2> positives (red), then the negatives (black). Then disconnect starting with> the black?>
For some reason, I had it in my mind that you connect the black first to> prevent an "open ground", but I guess I am wrong.>
Appreciate any help.>


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homepage: www.ncf.ca/~ag384/t­op.htm
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Y_p_w 28 January 2005 20:26:31 permanent link ]
 

William R. Watt wrote:
The method as I memorized it is "postive-to-postive­, negative-to-ground"­.> Then start the engine of the car with the good battery before starting the> car with the bad battery.

Specifically, the order I recall is dead battery positive to good
battery positive. Then good battery negative to ground AWAY from
the battery; ground is any metal part at least 8 inches from the
dead battery. The idea is that a spark when the circuit is
completed could potentially ignite any flammable gasses coming
from the battery.
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Buck Turgidson 28 January 2005 21:40:29 permanent link ]
 
Specifically, the order I recall is dead battery positive to good> battery positive. Then good battery negative to ground AWAY from> the battery; ground is any metal part at least 8 inches from the> dead battery. The idea is that a spark when the circuit is> completed could potentially ignite any flammable gasses coming> from the battery.

Thanks. I used to do this a lot in my younger days, but as I get older, the
more cautious I become. I am also becoming afraid of my power tools - a
sign of old age.


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Alex Rodriguez 28 January 2005 22:00:11 permanent link ]
 In article <qtupc2-9o3.ln1@tur­f.turgidson.com>, jc_va@hotmail.com says...>
Just want to confirm the procedure to jump a battery - connect the 2>positives (red), then the negatives (black). Then disconnect starting with>the black?>
For some reason, I had it in my mind that you connect the black first to>prevent an "open ground", but I guess I am wrong.

It is recommended that you not connect the black to the battery terminal
of the dead battery. Instead, connect it to a solid grounding point on
the engine/chasis.
-------------
Alex

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Steve 28 January 2005 23:45:13 permanent link ]
 Buck Turgidson wrote:
Thanks. I used to do this a lot in my younger days, but as I get older, the> more cautious I become. I am also becoming afraid of my power tools - a> sign of old age.

And depletion of vital bodily fluids.

(sorry, couldn't resist after seeing your E-name).

Add comment
Steve 28 January 2005 23:48:26 permanent link ]
 Corky Scott wrote:
I've had bad luck trying to make a good ground connection on the dead> car away from the battery and getting a good enough connection to make> things happen. There always seems to be too much resistance to get> the engine spinning fast enough to run.

There are two keys to making it work:

1) GOOD jumper cables (not Pep Boys junk)

2) Connecting to the engine block (or cylinder head, or an accessory
that is rigidly bolted to the block such as an A/C compressor). NOT
trying to clamp to body sheet-metal.

It also helps to hook the cables up, start the "donor" car, and just
wait 5 minutes for the donor car's alternator to put at least a minimal
charge into the dead battery. The added benefit is that you can stand
back while that's going on in case the dead battery is frozen and you
hadn't realized it.

Add comment
Sdlomi2 29 January 2005 06:31:53 permanent link ]
 
"Buck Turgidson" <jc_va@hotmail.com>­ wrote in message
news:cmbqc2-ni4.ln1­@turf.turgidson.com.­..> Oh great. Something to worry about. Maybe I'll just dig out my Roadside> assistance card and sit around and wait for them.

NO, NO, NO!!! Don't shy away, Buck. You & I both need to keep on
truckin'--else, if we SIT down, we will GO down. If needs be, type the
instructions w/your computer, and "laminate" it with clear wrapping
paper--all on a section of paper large enough to keep and find in your glove
box. And, be not ashamed of referring to it. Got a close friend who runs a
several-thousand-ac­re farm using free shirt-pocket memo pads which he refers
to 'religiously'. And he ain't ashamed to be seen using it. Prolly got
more $ than the next 10 biggest farmers, combined, in his portion of the
state! HTH & good luck......... s


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Bill Darden 29 January 2005 14:00:58 permanent link ]
 Hi Buck,

Please see Section 6 in the Car and Deep Cycle Battery FAQ on
www.batteryfaq.org for details on jumping batteries and Section 9 for
Charging and Charger info. Please wear glasses and do not jump or
charge a frozen battery--let it thaw first.

Kindest regards,

BiLL......

On Fri, 28 Jan 2005 09:30:49 -0500, "Buck Turgidson"
<jc_va@hotmail.com>­ wrote:
Just want to confirm the procedure to jump a battery - connect the 2>positives (red), then the negatives (black). Then disconnect starting with>the black?>
For some reason, I had it in my mind that you connect the black first to>prevent an "open ground", but I guess I am wrong.>
Appreciate any help.>

Add comment
 

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CarGuru > Technology > Jumping a Car Battery 29 January 2005 14:00:58

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