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  1. #1
    Powder Springs, Georgia USA jcat's Avatar
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    What should the battery voltage be when the engine is running?

    2006 FX High Output Cruiser......

    My battery goes dead after a day or two (sitting) and I'm trying to figure out:

    Is my battery bad ?

    Is it not getting charged ? (What should my volt meter read when the engine is running?)

    Is there a drain on it when the Waverunner is not being used ?

    Can anyone tell me the steps I need to take in order to repair this ?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Generally speaking when an engine is running the battery voltage should be between 13.5 volts and 14.5 volts, give or take a little.

    Battery voltage below 13.0 volts with the engine running means the battery is not charging.

    How old is the battery? A typical lead-acid battery (with six filler caps down the middle) only lasts a few years, sometimes only 2 or 3.

    A factory sealed AGM battery should last maybe 5-6 years, depending on how it is cared for.

  3. #3
    SurfRider's Avatar
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    The battery voltage should be around 14 volts when it is charging. It may be a bit lower if the battery is really low and it's trying to juice it up.

    I don't believe that there should be much drain on the battery. If the battery is a 2006, just be happy that it lasted that long! Time to buy a new one.

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