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Thread: Killing car battery

  1. #1
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    Killing car battery

    Last night I was working with my carPC moving it from the back seat to under my front seat and when I was done the battery was dead. So I got it jumped drove to work and then home about 1/2 hour altogether. This morning I was doing some more work and just to be safe I left the car running. I moved something and my PC shutdown so I shut the car off, then turned the inverter off, then tried to start the car again and it wouldnt turn over. I have a 400watt inverter powered off the battery and ground within 2 feet of the inverter and my PC is under my front seat and in contact with the frame of my car (the cdrom and PSU are, the mobo is above the cdrom and has standoffs as well as some padding underneath to keep it from shorting out.) Was my battery possibly still to weak and a moments use of my PC was enough to kill it or did I possibly short it out or something? Any input would be appreciated Ill be here waiting for a jump as no one is home.
    thanks

  2. #2
    Raw Wave hijinks21's Avatar
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    what kind of car? your alternator might not be strong enough to keep the battery charged.
    '98 Explorer Sport
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  3. #3
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    '84 saab 900

  4. #4
    Raw Wave hijinks21's Avatar
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    i doubt you shorted anything out. Sounds like your alternator might not be strong enough.

    Check the wiring doing to your alternator to the battery and also your batteries ground. My old truck use to just randomly die and wouldn't keep the battery charged due to bad wires.
    '98 Explorer Sport
    http://mp3car.zcentric.com (down atm)
    AMD 800mhz 192megs RAM 60gig hard drive 9 inch widescreen VGA
    80% done

  5. #5
    FLAC DodgeCummins's Avatar
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    I am sure your alternator is at least 45Amps.

    I agree on checking the condition of the battery cables...especially where they attach to the battery posts.

    Also it takes a while to recharge a completely dead battery.

    Besides, most car batterys only last about 3-5 years...depending on the conditions they live in, very hot, very cold, very offroad bumpy, will shorten the battery life.

  6. #6
    Variable Bitrate
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    Quote Originally Posted by DodgeCummins
    I am sure your alternator is at least 45Amps.

    I agree on checking the condition of the battery cables...especially where they attach to the battery posts.

    Also it takes a while to recharge a completely dead battery.

    Besides, most car batterys only last about 3-5 years...depending on the conditions they live in, very hot, very cold, very offroad bumpy, will shorten the battery life.
    I had a similar problem of the battery dying very quickly. My solution was to get a Diehard Gold battery. Now I can run the carputer for hours and have the car start fine. How old is your battery?

  7. #7
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    probably pretty old. Ill check out the wiring i may have loosened it up when I hooked up the inverter then ill try a new bat.
    thanks for quick replies

  8. #8
    Raw Wave hijinks21's Avatar
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    its not only the posts.. but the your whole ground wire.
    '98 Explorer Sport
    http://mp3car.zcentric.com (down atm)
    AMD 800mhz 192megs RAM 60gig hard drive 9 inch widescreen VGA
    80% done

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