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    15.15 volts

    just installed my new alternator on my lincoln and with my voltmeter hooked up its reading 15.15 volts. should i be alarmed the cars a 75 so it has no computers or electronics just my alpine hu and amps and stuff ....also i get 13.8 volts at the battery car off







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    Re: 15.15 volts

    Thats really interesting...i know most car batteries are 12v, and nothing more. But i believe there are higher current ones, which you may have. It also is possible for an alternator to put out that much, it also helps not having any loads drawn from the cars onboard components. But i think if none of hte above apply to you, maybe do you have the multimeter on the wrong setting?



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    Re: 15.15 volts

    I would guess that it's just an inaccuracy in the meter since both measurements are unusually high.




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    Re: 15.15 volts

    im going to get another meter later but i think this ones good ...




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    Re: 15.15 volts

    With no load and a freshly charged battery, 13.8 volts is not uncommon. For the alternator, it sound like your voltage regulator might be off but under a no load condition it could run a bit higher as well.



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    Re: 15.15 volts

    i found my other tester so ill try it again and ill try it with the headlights on ill report back im a few




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    Re: 15.15 volts

    i just treid my other tester and it gave me readings im more familliar with .....imagine that i have a digital tester thats off that much ....




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    Re: 15.15 volts

    Did you try both testers with the headlights on? Just curious.



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    Re: 15.15 volts

    i didnt try either with the lights on




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    Re: 15.15 volts

    why is it because a battery says 12 volts they assume that it must have 12 and only 12 volts?




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