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Battery Voltage

Discussion in 'The Garage' started by MontanaLifted, Dec 5, 2003.

  1. MontanaLifted

    MontanaLifted 1/2 ton status

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    What is the Voltage gauge supposed to read if everything is good???
     
  2. Muddytazz

    Muddytazz 1 ton status

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    IIRC around 14volts
     
  3. HarryH3

    HarryH3 1 ton status Author

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    12 volts with the engine off. 13.8 volts with the engine running. /forums/images/graemlins/cool.gif
     
  4. MontanaLifted

    MontanaLifted 1/2 ton status

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    I have a 77 chevy pickup

    I assume IIRC is the computer for a new rig?
     
  5. heavy4x4

    heavy4x4 1/2 ton status

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    [ QUOTE ]
    IIRC

    [/ QUOTE ]

    "If I Recall Correctly"
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    Don't trust the voltage gauge unless you've put a voltmeter on the alternator/battery.

    Check that you ARE seeing the 13+ volts when it's running at both of those places, and then just make sure your gauge reads in the same place all the time. If it drops or increases from its "normal" position, you've got problems.

    Most of the stock ones I've seen run just over the halfway mark, but with the age most of these are, it can vary.
     
  7. gravdigr

    gravdigr 1/2 ton status

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    anywhere between 13 and 15 volts is acceptable. Lower and you are draining the batterey. Higher and you are cooking it.
     
  8. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    12.6-12.8 volts with the engine off. 13+ volts with the engine running. /forums/images/graemlins/cool.gif

    [/ QUOTE ]

    Fixed it for you. /forums/images/graemlins/thumb.gif 12.0 volts is a completely dead battery.
     
  9. Muddytazz

    Muddytazz 1 ton status

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    [ QUOTE ]
    12.0 volts is a completely dead battery.

    [/ QUOTE ]

    Wrong again /forums/images/graemlins/rolleyes.gif
     
  10. dyeager535

    dyeager535 1 ton status Premium Member

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    Yeah, gotta say, the battery may not be in great shape at 12 volts or less, but I've driven home before with a dead alternator, turned out to be 10 volts (at the battery) by the time I got back.

    Lights were a little dim, but no noticeable difference in the way she ran.
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    [ QUOTE ]
    12.0 volts is a completely dead battery.

    [/ QUOTE ]

    Wrong again /forums/images/graemlins/rolleyes.gif

    [/ QUOTE ]

    Actually, no. 12.0 volts is considered a 0% state of charge. You can kill a battery further (I see that every day) but at 12.0, a starting battery is considered completely dead.
     
  12. Muddytazz

    Muddytazz 1 ton status

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    I've had batteries last me yrs with 12.0 volts when the ign is in the off position
     

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