Dead battery won't charge
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Elder User
Joined: Mar 2003
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From: AZ.
Dead battery won't charge
My F-100 is at "rest" with a snapped exhaust manifold bolt and the battery drained totally dead. It's only several months old and the water is OK. It has to have a little juice in it so the charger will work. How can I "prime" it so it will take a charge. I was going to jump it for a while with another battery but I don't want to take a chance on making a kaboomer. 
I have a 50A/trickle charger.. Thanks for any opinions.
I have a 50A/trickle charger.. Thanks for any opinions.
Elder User
Joined: Oct 2003
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From: Tampa Fl
it may also have a dead cell, i would just invest in a new battery they are really quite inexpensive, actually you may have a warranty...most battery manufacturers stand behind their products listings EX: 78 mo battery etc... if it has died before its life was over they may just swap it out 
Lead Driver
Joined: Jun 2004
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From: Amarillo, TEXAS!
I think I know what you are getting at. The charger is one of the electronic ones that won't turn on unless it senses some sort of voltage, right? You might have to hook the dead battery to another battery with cables for a few minutes to get some juice into it. Then the charger should work.
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From: AZ.
Originally Posted by Pikachu
I think I know what you are getting at. The charger is one of the electronic ones that won't turn on unless it senses some sort of voltage, right? You might have to hook the dead battery to another battery with cables for a few minutes to get some juice into it. Then the charger should work.
You got it....
... Any chance of a kaboom hooking a fully charged battery to a fully dead one? Any short type reaction? I think the dead one is sound in it's structure..There was nothing when I put the 50A. charger to it....Thanks..I can't, in clear consience take it back because it's not a failure of the battery but of my neglegence to disconnect it. I know better, I just forgot. I hate when I do something stupid like that..
Lead Driver
Joined: Jun 2004
Posts: 6,340
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From: Amarillo, TEXAS!
You will probably get a spark when you hook the two batteries together, but you'd get a spark hooking a conventional charger up to it anyhow. Lead-acid batteries do generate hydrogen while they charge, but with decent ventilation it shouldn't be an issue. If you're concerned about it, you could set it on the ground in front of another vehicle and use the other vehicle and booster cables to charge it. Or, if I'm not mistaken, if you take it to Sears and ask them to test it, they will charge it before they load test it. Last I knew they did this for free, and if the battery is no longer serviceable you can get one there at the same time.
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