Volts and watts istick

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Matt Marshall

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Got the Istick 30w through the door about a week ago and a nautilus mini tank, loving life. Reading other forums though it seems people are adjusting volts and wattage a lot more freely than it seems possible with the istick as when you adjust one setting the other adjust itself accordingly. Is that meant to be the case or is there a way to adjust one without the other? Also what voltage should I be vaping a 1.8ohm bvc? Cheers
 

bwh79

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Volts and watts are tied to each other by the resistance of the atomizer coil, so changing one will necessarily change the other.

Amps = Volts / Ohms (Ohm's law)

Watts = Volts * Amps (or Volts^2 / Ohms)

So as long as the ohms remain constant (which they will, unless you switch atomizers) then any adjustment to the volts results in a different wattage, and any adjustment to the watts requires a different voltage.
 

tearose50

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Volts and watts are tied to each other by the resistance of the atomizer coil, so changing one will necessarily change the other.



So true.

As the iSticks show both the applied wattage and the voltage being applied on the screen, it's only your decision as to which you want in the bigger display letters.

You should start low and increase/adjust until you find the vape level you like for your liquid and your topper. Adjusting the power levels to taste is always the best.

My hubby likes eggplant -- and I don't. 8-o It's similar with vaping -- we should choose what we prefer and not what "everyone says". I happen to like my nauti mini's with 1.8 coils much lower than most, staying within 6-8 watts. Some say they work well in the 8 -15 watt range. (I'd need to look at an Ohm's calculator (or my iStick display) to convert to voltage for you.)
 

DingerCPA

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Hey Matt!

Settings are all about your preference. Rule of thumb I'd heard was to start with the volts at about 2 + resistance of the coil. That would be about 3.8V. Then, Watts = Volts squared / Resistance. So, 3.8 * 3.8 / 1.8 = just a shade over 8W. I've also read that lots of folks run those same coils around 12 watts or so - I can't do it. It seems to burn, baby, burn on me. Highest I push my Nautis has been about 10-10.5W.

You'll set either Volts or Watts, but not both. The iStick will "do the math" for you.

Other thing, don't try to "kick-start" the Nauti, especially with a fresh coil. Make sure you get that bad boy good and soaked/primed before you start upping the power on it. You'd be almost guaranteed that you'll fry the coil. Be patient with it, and it will server you well :)
 

tj99959

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    Saying what wattage I like with a particular topper means nothing without also saying what flavor I''m using. Even a great tobacco flavor would be tasteless at the wattage I use with a nice fruit flavor. This is because different flavors have different flash points.

    One correction to the idea that it's only which you want displayed in larger numbers on the iStick.
    If you have your iStick set to display voltage, and change resistance, the wattage will change and the voltage will remain the same. (huge difference in the vape)
    If you have it set to display wattage, and you change resistance, the voltage will change and the wattage will remain the same. (little if any difference in the vape)
     

    Sir2fyablyNutz

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    Saying what wattage I like with a particular topper means nothing without also saying what flavor I''m using. Even a great tobacco flavor would be tasteless at the wattage I use with a nice fruit flavor. This is because different flavors have different flash points.

    One correction to the idea that it's only which you want displayed in larger numbers on the iStick.
    If you have your iStick set to display voltage, and change resistance, the wattage will change and the voltage will remain the same. (huge difference in the vape)
    If you have it set to display wattage, and you change resistance, the voltage will change and the wattage will remain the same. (little if any difference in the vape)

    ok tj, by "changing resistance" are you referring to changing from the 1.8 ohm coil the OP is using (as I am) or changing tanks? (which could also be changing the coil resistance)
     

    Matt Marshall

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    This is slightly off topic but it might tie in. When I was using my eGo after one week my cough had gone. I ve been using my istick for about 1 week and have now been off analogues for two and my cough has come back is this because of the stronger vape or because of stopping smoking? I'm hoping the latter. It's not when I vape it's just random coughing like when I smoked. Help
     

    Sir2fyablyNutz

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    tj99959

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    ok tj, by "changing resistance" are you referring to changing from the 1.8 ohm coil the OP is using (as I am) or changing tanks? (which could also be changing the coil resistance)

    Obviously that would have to be when comparing an apple to an apple, ie. like replacing a 2 ohm carto with a 3 ohm carto, or a 1.8 ohm head with a 2.2 ohm head in a clearo tank.
     

    tearose50

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    IMHO changing resistance only means changing to a coil with another resistance.

    As earlier stated, if you are setting your device to wattage -- it should vape pretty much the same with a 1.8 coil as it would with a 2.5 ohm coil as the device computes and adjusts to the correct voltage to produce that wattage setting. If you are set at voltage, you would notice quite a change in the heat level by changing to such a different ohm coil.

    Changing tanks does not change resistance. One might need to change their wattage/voltage level however, as though often quite similar, all tanks are not the same. But, generally, if you like 1.8 ohm coil at 4.8 watts on one topper, you will like that or very close to it on another tank.
     
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    xekushnr

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    Sorry to resurrect an old thread, but would vaping at a higher wattage/voltage cause the coils to fry sooner? Is that the main reason for people running lower? I just got my iStick with a full size Nautilus and had been running it on 20w and didn't find it too harsh. It's equally pleasurable on a lower setting, just needs a longer drag.

    If keeping power levels low saves coil life then i will keep it low.
     
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