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Confusion on voltage.

Discussion in 'RDA' started by Joe Vito, Feb 16, 2018.

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  1. bombastinator

    bombastinator Vaping Master Verified Member ECF Veteran

    Sep 12, 2010
    MN USA
    Perhaps my reply was inordinately brief. The voltage booster circuit is part of the voltage thief circuit. I mentioned the voltage thief because the Wikipedia entry happens to contain a handy circuit diagram. I was questioning whether your issue was based on knowledge of the circuitry or assumptions about the way you believe a device should work.
     
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  2. mrjohs

    mrjohs Senior Member ECF Veteran

    Apr 3, 2015
    You said:

    What I am questioning is the "It’s not great for the batteries" part. How can it be worse for the battery to draw 40W on a 0.34ohm coil with 3.7V on a mech, compared to drawing 40W on a 0.9ohm coil with 6V on a regulated?

    They are both drawing about 11 Amperes and 3.7V from the battery, so I do not see how that is different in regards to wear of the battery.
     
    • Agree Agree x 1
  3. Topwater Elvis

    Topwater Elvis Vaping Master ECF Veteran

    Dec 26, 2012
    Texas
    When using regulated power device resistance is irrelevant as long as it is within its operating range and has nothing to do with battery amp drain.
    Just before & at the power devices battery low voltage cutoff amp demand will be highest, as battery voltage decreases amp demand increases.
    ---> Calculating battery current draw for a regulated mod | E-Cigarette Forum

    When using a mech, battery amp demand will be highest when using a cell at 4.2v & decreases as voltage depletes.
    4.2v / .34Ω = 12.3a
    3.7v / .34Ω = 10.8a
    3.2v /.34Ω = 9.4a
     
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  4. Don29palms

    Don29palms Ultra Member ECF Veteran

    Sep 12, 2014
    joshua tree, ca
    A corvette with a 6cyl engine has the same top speed as a corvette with a twin turbo . The size of the engine doesn't matter as long as it's a corvette.
     
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  5. savourymilkman

    savourymilkman Full Member

    Mar 2, 2018
    Heh, first post and its an answer not a question

    Voltage is the measurement of electrical potential, or "pressure." You can increase the voltage on these mods via potentiometer, which is dependent on the current voltage of the battery or batteries in serial, OR by having voltage boosters between the battery and potentiometer. I would not use voltage settings above 4v for a single battery, at full charge the voltage is ~4.2v. Depending on design it might not even work more than the current voltage of the battery, so an 8.4v setting really would mean that its just running at max volts available
     
    • Useful Useful x 1
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