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Old 09-20-2011, 04:33 PM Rookie

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Battery drain?

I have a 2000 F-350 long bed 4 door diesel. For the last week if the truck sits more than a day the batteries are drained enough it won't start. Have to put the charger on for almost an hour (14 amp) before it will start. Just wondering if anyone else has had same problem. Is this what happens when batteries are wore out?
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Old 09-20-2011, 11:19 PM
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It can be old batteries or you could have something wrong. What you should do is check each battery individually to see if one is running a lower voltage and bringing the other down. You can also use a multimeter to check if anything is drawing an excessive amount of current.
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Old 09-20-2011, 11:51 PM
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First off Welcome to the ORG. then I would ask how old
are the batteries and have you had them tested individually.
If one is bad replace both of them.
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Old 09-21-2011, 07:40 PM
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I had this issue, I took the truck to a good diesel shop and they tested everything for me. Everything checked out. They even said the batteries tested good but they did discharge rather quickly. They said I should change the batteries but could not say for sure if it would fix the problem. I changed the batteries and 2 years later still no issues. With that said, if your starter is old and tired it can do the same thing.
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