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Thread: 15V to 14.8v AGm battery - Too high?

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    Administrator AB's Avatar
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    15V to 14.8v AGm battery - Too high?

    I just noticed my alternator is starting to put out 15v on start up and after 10 or so mins driving it would drop back to 14.8.

    Yellow top Optima AGM, pretty new batteries.

    Is that too high or is my alternator on its way out?

    Might time for a new one and keep this as a spare for the Simpson anyway.

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    Stropp (18th May 2024)

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