Question on jumpstarting
Thread Starter
cesssna10
Joined: Feb 2011
Posts: 1,391
Likes: 47
From: Big Canoe Ga
Question on jumpstarting
Would like to know why when jump starting a car they tell
you to attach the negative cabel in the dead car to the frame
rather than to the negative battery post which is the way
we always did it years ago when my cars frequently had
dead batteries
you to attach the negative cabel in the dead car to the frame
rather than to the negative battery post which is the way
we always did it years ago when my cars frequently had
dead batteries
Pro
Joined: Jul 2010
Posts: 666
Likes: 2
From: western springs illinois
Maybe to prevent spark at battery where acid can cause explosion?
Melting Slicks
Joined: Oct 2009
Posts: 2,364
Likes: 4
From: Bedford MA
I believe it removes the risk of creating sparks.
When I encounter a dead battery I try and push start it first. Saves a bit of aggravation with cables or if you are in a bad spot. (Assuming the car is a manual)
When I encounter a dead battery I try and push start it first. Saves a bit of aggravation with cables or if you are in a bad spot. (Assuming the car is a manual)
Thread Starter
cesssna10
Joined: Feb 2011
Posts: 1,391
Likes: 47
From: Big Canoe Ga
Thread Starter
cesssna10
Joined: Feb 2011
Posts: 1,391
Likes: 47
From: Big Canoe Ga
Pro
Joined: Jul 2010
Posts: 666
Likes: 2
From: western springs illinois
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Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
I'm still a bit curious how much hydrogen is being outgassed by the (presumably) dead battery at the startee end of the cables...seems like the real issue is at the other end.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
Connect positive cables first. Connect neg on good battery. Connect neg on clean metal away from battery on dead battery. That's how I learned. The good battery is already connected so no chance of spark there.
Melting Slicks
Joined: Jul 2012
Posts: 2,507
Likes: 9
In the OLD days, when you had to add water to batteries, the vent caps would release hydrogen gas. That and a spark and a possibly frozen battery can make for a BAD day. Not so much an issue these days with sealed and AGM batteries but I guess it could still be a very small possibility it could still happen.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
In the OLD days, when you had to add water to batteries, the vent caps would release hydrogen gas. That and a spark and a possibly frozen battery can make for a BAD day. Not so much an issue these days with sealed and AGM batteries but I guess it could still be a very small possibility it could still happen.