Connecting batteries together in a pinch? - Ford Powerstroke Diesel Forum
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Old 01-08-2014, 04:06 AM
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Connecting batteries together in a pinch?

I had a buddy tell me that if you try to start your diesel and it's turning slow that you can use a jumper cable to connect the 2 batteries and sometimes it's enough to turn the truck over, kind of like jumping but not as effective.
Is this true or does it help?

Dave
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Old 01-08-2014, 04:11 AM
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I believe the batteries are already hooked together in parallel, so his suggestion makes no change electrically.
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Old 01-08-2014, 06:10 AM
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^^^ this, the logic does not compute unless you have a bad connection or bad wires
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Old 01-13-2014, 09:50 PM
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Lol. They are already linked in parallel. Won't help at all. If it won't start you may require a jump and or new batteries/alternator.
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Old 01-14-2014, 07:35 PM
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Like said, the batteries are already wired together in parallel. I believe your buddy is referring to using jumper cables to connect them in series, which would give you 24 volts, rather than 12, and would likely fry all of your electronics, including your trucks computer system. DO NOT TRY THIS AT HOME!!!!
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