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Battery voltage increases when voltmeter connected

  1. May 4, 2016 #1
    When I connect a AA rechargeable battery directly to a voltmeter, voltage increases slowly, regardless of the way I connect it. I can't figure out why.
  2. jcsd
  3. May 4, 2016 #2


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    Staff: Mentor

    Increases from what to what? And what do you mean by "regardless of the way I connect it"? There aren't that many ways to connect a DVM to a battery... :smile:
  4. May 5, 2016 #3


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    Gold Member

    This happened to me last year when I was measuring the voltage on a car battery.
    It turned out the battery in my voltmeter was going dead.
    Replacing the battery in the voltmeter made the problem go away.
  5. May 5, 2016 #4


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    Science Advisor
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    Sometimes the heat from your hand is enough to boost the chemical reaction in the battery increasing the voltage.
  6. May 5, 2016 #5


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    Science Advisor
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    Correctly anyway. I wondered the same thing.
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