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Minimum car battery voltage

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  • Minimum car battery voltage

    Does anyboby know what is the minimum voltage of a car battery to start running the engine?
    Enjoint life!

  • #2
    The more important measurement is amperage, and it depends on the engine size. The larger the engine, the more amperage needed.
    KG6OQD
    www.americansandassociation.org

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    • #3
      If you're trying to measure how much battery life is left in your battery by measuring the voltage, you can't reliably.

      The battery voltage will depend on the load placed across it. A battery can measure fine under no load (say +12V) but once you put your 300A starter across it, then you'll see that it's dead.

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