Ohms + Voltage: Is there any difference across the spectrum?

[KiloWatts]

Okay, so you have a 1.5ohm atomizer. Run it at 3.7v and it works great.

Then you have a 2.5ohm atomizer. Run it at 4.5v and it works great.

Is there any difference in the experience? Likewise, is there any other benefit, like more durability? For instance, if I run a 2.5ohm at 4.5v, will my coil last longer due to the higher resistance?

 

[Unforeseen]

Moved from General E-Smoking Discussion to Assorted PV Topics - Atomizers and Cartridges

 

[DC2]

People say that the higher ohm/lower voltage setup strains your battery less.
And some people also say that the lower ohm/higher voltage setup can burn your juice more easily.

I don't know because I have never used anything but my 2.3 ohm Joye 510 atomizers.
Hopefully someone will come along and give you a better answer.

 

[Kevin King]

Low resistance anything is going to pull more amps then a higher rated ohm atty/carto. wich means your battery will be drained quicker with low resistance. other then that i dont see much of a difference except for personal preference.

 

[Rader2146]

Not true with a VV device. From the numbers he gave, it looks like KiloWatts prefers 8-9 watts with either atty. watts in must equal watts out (conservation of energy). So when you figure for the power conversion you would see that the battery drain is the same for either resistance as long as they are used at the same watts.

 

[spraintz]

3.7 volts with a 1.5 ohm atomizer is 9.13 watts and drawing 2.47 amps
4.7 volts with a 2.5 ohm atomizer is 8.8 watts and drawing 1.88 amps
5.7 volts with a 3.5 ohm atomizer is 9.28 watts and drawing 1.63 amps

Yes, the wattage is similar but the current draw is clearly less. with less current draw battery life will be better.

I used to use 3 - 3.5 ohm atomizers with 5.5 - 6v primarily, I have recently started using 2-2.5ohm atomizers at 4-4.5volts.......I can confidently say that battery life has decreased since making this change. Now, it's not a massive change, the battery that used to last me about 12hrs now lasts about 10hrs so not really too bad and to some people possibly not even noticed but it is there.

To KiloWatts, besides the battery thing it's mostly preference. At the same watts, I personally prefer the 2-2.5 ohm coil over a 1.5ohm as to me the 1.5ohm heats up a lil to quicly for me a gives me a lil too warm a hit and runs to the edge of cooking juice. The 2-2.5 are gives me more room to adjust and tweak voltage (provari BTW) depending on my needs/desires at a specific moment........if I want a lil cooler and mellow hit with nice flavor...about 3.9 volts.........if I'm getting stressed and I need a nice big "get the job done" hit then I can crank up to 4.7.

Have fun, see you on the other side...


(I'm no mathematician, I use this calculator Ohm's Law Calculator, credit where credit is due ya know)

 

[Rader2146]

You are calculating amps at the output side, the battery is on the input side. . There is a voltage conversion that takes place in the middle.

In an ideal (not factoring efficiancy losses) circuit with a 3.7v battery voltage:

9.13/3.7=2.46A at the battery

8.8/3.7=2.37A

9.28/3.7=2.50A

With efficiancy factored in, current will be higher. But efficiancy is not constant. It changes with a variety of variables. You may be in a better efficiancy range with the 2.0-2.5 ohm atty.