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2010 Toyota Corolla Question: What should the battery voltage be when car is running?

 

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, 1.8L 4 Cylinder, Port Saint Lucie, FL, December 16, 2011, 15:03
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What is considered low voltage?

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  • Answer #1

    Four Points Auto Repair (8 Answers) , Port Saint Lucie, FL - (772) 675-4678
    FOURPOINTSAUTO December 16, 2011, 15:27
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     Enthusiast

    CHARGING VOLTAGE SHOULD BE ABOVE 13.2

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  • Medium-star Best Answer
    patrick mannion from Greg Solow's Engine Room, December 16, 2011, 22:23
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     Master

    14.6 would be high normal, 13.5v would be acceptable battery charging voltage. Check voltage across the battery terminals, leave the black ground wire at the battery post (-) move the red volt lead to the large wire post at the alternator if the voltage is different you have a voltage drop (youtube voltage drop there is a good video there). At rest engine off battery voltage should be 12.6 volts at rest if battery is charged and good.

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  • Answer #3

    Eurotech Complete Auto Care (5 Answers) , San Carlos, CA - (650) 226-8389
    MB Center December 16, 2011, 23:19
     Enthusiast

    above 12.75

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  • Answer #4

    December 17, 2011, 23:42
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     Master

    Anything below 13.5 volts with loads like lights, A/C and wipers on. No less than 13.5 volts.

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