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Thread: HELP " Batterie NOT charging "

  1. #1
    Join Date
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    HELP " Batterie NOT charging "

    Hi All

    have upgraded my Altanator and it seems to work OK :?
    but it is not charging up the batteries.
    my old alternator did not charge as well.

    WHAT CAN BE THE PROBLEM :?: :?: :?:

    any

    thanks

    kai

  2. #2
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    Hi kaistuff, you are sure as hell having some fun.
    Start by running your motor and measuring the voltage across the terminals of the battery.

    Now get your revs up a bit and see if there is any change.

    depending on how low the battery is, there should be a slight rise in voltage.

    Then turn your headlights on and measure the volts at the battery again.

    If there is little or no change in voltage then I think you may have a stuffed battery.

    If there is a large drop then you may still have a problem with the alternator or your voltage reg.

    This is just a point of reference and you may need to see an auto elec and get the battery load tested.

    Cheers.

    PS How long did you drive the vehicle before decided the battery was not being charged.

  3. #3
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    Hi drivesafe

    the voltage drop on the batteries terminals is only .1V

    withe headlights on drop ts .2V
    h beam another .2V
    diving lights another .2V

    starting at 12.9V

    drive for about 5 min

    turn every thing of voltage is back to 12.8 to 12.9

    r****** engine to ~3000 rpm no change in voltage out put on the alternator

    12.9 V be for and at revs


    ?????????????????????????????????????????????????? ????????????????

    Kai

  4. #4
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    OK... A couple of pointers for you:

    1 - Is the battery dash warning light working? If not, the alternator will not charge. How to test? Just turn the ignition key to the point where the lamp should be lit.

    2 - The alternator requires a +12v feed to tell it to charge. Without this, you can turn it all you want but it won't charge. Check the wiring to make sure that's happening. To test, just connect the terminal on the alternator to the battery while the engine is running. If that is the problem, it should suddenly kick in.

    HTH

    Mark

  5. #5
    Join Date
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    Welcome to Melbourne Mark
    Hope you like the nice warm weather we have at the moment. [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]

    regards my alternator

    will try when i get home from work today or tomorrow

    question will you join us on Saturday the 28th ? :?: [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]


    Send me a PM if you coming down to the Morning ton Peninsula
    and i am more than Happy to show you around
    and tell you where my Little test track is [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] :wink:

    Kai

  6. #6
    Hellspawn Guest
    Dirty battery/alternator connections.
    Poor Earth.

  7. #7
    Join Date
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    <div class='quotetop'>QUOTE</div><div class='quotemain'>Hellspawn wrote:
    Dirty battery/alternator connections.
    Poor Earth. [/b][/quote]




    NO No cleand them all with sand paper nice and clean


    Kai

  8. #8
    Hellspawn Guest
    Ahh but are you sure the alternator is earthed as some use rubber bushes that act like insulators.

  9. #9
    Join Date
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    Originally posted by kaistuff
    Welcome to Melbourne Mark
    Hope you like the nice warm weather we have at the moment. [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]

    regards my alternator

    will try when i get home from work today or tomorrow

    question will you join us on Saturday the 28th ? :?:


    Send me a PM if you coming down to the Morning ton Peninsula
    and i am more than Happy to show you around
    and tell you where my Little test track is :wink:

    Kai
    Well... The ship carrying the 110 should have arrived today so assuming I can get it out of customs in time (do we have any useful contacts here?? :wink then I hope to be along on the weekend.

    Failing that, I'm in town for the next 4 weeks so I'm sure we could arrange something.

    Mark

  10. #10
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    A fully charged battery will have 12.7-12.9 volts with the ignition turned OFF.

    Within a few minutes of starting the engine the voltage at the battery terminals should be 13.9-14.5 volts with no headlights or accessories on, because an alternator must charge at 14.5 volts to charge a 12 volt battery.

    If you only have 12.9 volts with the engine running the battery will never charge. There is something wrong with your alternator or the charging circuit.
    A battery is only an energy storage device. Once the engine starts the car electrical system relies on the alternator to run everything and maintain the battery.
    As others have suggested maybe you have not connected the exciter which goes through the dash bulb,. If the dash light goes on at ign turn on and off while running then generally your earths are OK, as the bulb measures the difference in electricity between the alternator and the battery.
    The most likely explanation is a damaged alternator.
    Regards Philip A

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