Mod voltage vs. atomizer resistance questions.

[Glarsky]

Hello all! I have some questions about atomizer resistance and mod voltage. I understand that a higher ohm rating means more electrical resistance, which means less heat from any given voltage. Lower ohm means less resistance, so more heat.

So is there any real difference in vapor using a low resistance atomizer with a standard 3.7 mod, compared with a standard resistance atomizer at a higher voltage?

It seems there must be a difference, because people still pay money for 5v+ tube/box/etc mods even though a lower resistance atomizer is less expensive and ostensibly accomplishes the same thing, electrically speaking. I may just be plain darn wrong, feel free to correct me if that's the case.

Happy vaping!

 

[madjack]

Kinda in the same boat...the thing is LR and 3.7v can only take you so far into the wattage range...around 8watts rso...with VV and diff attys/cartos you should be able to "dial" in that sweet spot...whatever that is.........
madjack

http://www.ohmslawcalculator.com/ohms_law_calculator.php ...plug diff numbers into the volt and ohm range and see the wattage diff...from what I have read, it seems that most like something in the 8-10watt range...some higher and some lower........mj

 

[JW50]

There are some technical possibilities as to why 7 watts at 5 volts might be better than 7 watts at 3.7 volts. For example, 7 watts at 5 volts suggests resistance of 3.57 ohms. 7 watts at 3.7 volts suggests 1.96 ohms. Higher ohms would generally mean more heating coil surface area exposed to e-liquid. So possibly a thicker vapor at the higher ohm situation that might be partially compensated for by taking shorter drags. But my suspicion is that it is more just a matter of taste and choice. Some will like bigger mods better than smaller mods. Some will like higher volts better than lower volts. And some will have just the opposite tastes and choices.

 

[Glarsky]

Are higher resistance atomizers higher resistance because there is more coil? In that case, more vapor would probably be the result, which would certainly justify a higher voltage/higher ohm atomizer setup.

 

[BuzzKill]

Higher resistance and higher voltage = LESS current draw from the battery , longer charge time, easier on the battery , etc.

 

[Dalton63841]

Higher resistance and higher voltage = LESS current draw from the battery , longer charge time, easier on the battery , etc.

Exactly^^

1.5ohms @ 3.7v = 9.13watts @ 2.47amps
3ohms @ 5.3v = 9.36watts @ 1.77amps

As you can see, even though you use a lower voltage with low resistance, the amp draw is MUCH higher. The higher the amp draw, the more strain you put on the circuit, and on the batteries.

 

[Glarsky]

I see, that makes perfect sense. Looks like buzz pro it is. Or I suppose I could try convincing my girlfriend to let me drop the cash on a provari..

 

[JW50]

I see, that makes perfect sense. Looks like buzz pro it is. Or I suppose I could try convincing my girlfriend to let me drop the cash on a provari..

Just thinking about it, why stop there? Why not a 12 volt?

 

[Glarsky]

I did not know there were such things. Any tips on connecting a 510 atty to a car battery?

 

[JW50]

I did not know there were such things. Any tips on connecting a 510 atty to a car battery?

Don't know of such things myself. But don't know why not. Current would be lower.

 

[hairball]

I did not know there were such things. Any tips on connecting a 510 atty to a car battery?

If you figure it out, please post...I want to try it....LOL.

 

[Dalton63841]

If you figure it out, please post...I want to try it....LOL.

LMAO! Considering that a car battery is 13.6v fully charged...you would need a 20.5ohm atomizer. That being said it would ony draw 0.66amps.

 

[DaveP]

I can just see it now, a guy vaping with a car battery rolling along on a cart behind him! Watch out for a shorted atty ... the sparks will fly for several feet and burn anything they touch! Ouch! Ever seen those guys who just have to touch the clamps together to check for voltage before they jump off a car?

 

[tj99959]

ROFL
I plug into the car all the time.
5 Volt 2 Amp USB Car Adapter
5 VOLT USB PASS THROUGH (REQUIRES SUFFICIENT POWER SOURCE)

 

[inga]

I did not know there were such things. Any tips on connecting a 510 atty to a car battery?

Why not just have a 510 To exhaust pipe connector.....

 

[tj99959]

These headers should create vapor quite nicely

 

[ambientech]

I fly rc planes with lithium polymer batteries and wonder why they aren't used in these box mods over the lithium ion. You could get more voltage and capacity in a box mod with them.

You can get some good cheap high capacity cells from HobbyKing R/C Hobby Store : LiPo, LiFe, NiMH Battery>Li-Poly (All brands)

 

[Rocketman]

Is that possibly why 1.5 ohm (or 1.6 ohm) dual coils produce so much vapor at 3.7 to 3.9 volts?

There's 6 ohms worth of coil in there?

 

[makasin]

Yeah, well having higher electrical resistance means less current being pulled from the batteries (the two 3V batts in series in a 6v mod for example), so less strain on the batteries. Plus, using high drains and advanced chemistries, they are able to easily match the power requirements than say a 17670 or smaller. Sure when you get to 18650+ sizes, this problem is lessened, but basically they can potentially last longer and be more reliable, not dropping as much in voltage and having all sorts of funky effects when it's heavily loaded (which is what them atomzers/cartos do). Coz youre practically almost shorting curcuiting the battery if you run it at 1.5 ohms load, on a 3.7V mod. That requires a LOT of power/strain. Battery technology isnt really designed/good enough yet for these types of applications IMHO. But either way, both methods work and produce great results. I just got into 6v vaping and am loving it. a 3.2 ish ohm atomizer is perfect, which is pretty similar to 3.7V with 1.5 ohm, but i can take shorter drags and it gets hotter due to more coil surface area and/or thickness of the coil.

 

[makasin]

I fly rc planes with lithium polymer batteries and wonder why they aren't used in these box mods over the lithium ion. You could get more voltage and capacity in a box mod with them.

You can get some good cheap high capacity cells from HobbyKing R/C Hobby Store : LiPo, LiFe, NiMH Battery>Li-Poly (All brands)

Those are all around 8-11V right? I dont think that would be a good idea. There arent any atomizers with a high enough impedence that would be able to produce vapor without burning the juice or just immediately popping. Even a 4 ohm would be like 30 Watts! BOOM! Although it would be cool if someone made a 20 ohm atty lol but I dont see it getting to that point anytime soon. It would be an interesting DIY thing though.