Battery condition

Discussion in 'Audio & Electronics' started by fastpat, Jul 8, 2018.

  1. fastpat

    fastpat Senior Member Supporting Member

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    I checked the battery voltage today after my Yukon had sat unstarted for 48 hours. It was a not good 11.4 volts, meaning I'll be buying a new battery this week.
     
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  2. fastpat

    fastpat Senior Member Supporting Member

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    I drove the Yukon on some errands today and monitored the voltage for the trip. Once warmed up, it never got above 12.9 volts, another indicator of a weak battery. I'll have a new battery tomorrow.

    I've ordered a 200 amp alternator as well, and will install a heavier gauge alternator to battery cable tool
     
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  3. fastpat

    fastpat Senior Member Supporting Member

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    Installed a new battery this morning, engine off voltage is now 12.8 volts. Better, but still lower than I like. Next is a new alternator and an upsized alternator to battery cable.
     
  4. east302

    east302 Full Access Member

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    What was the voltage directly at the alternator post when running?


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