So what IS high voltage vaping all about? (Everything you've wanted to know plus a bit of electronic theory)

[BiffRocko]

@Drevly: Yes, more power means more heat and more juice. I was going through 2-3 ml a day with my eGo and normal attys. That went up to 4-5 a day with 3.7v + LR or 5v with standard attys.

@Brad: That sounds about right, but my knowledge of electronic theory is only at a novice level. I learned it many years ago and most of it has trickled out of my brain.

[Quick]

Thanks for the info.. Im looking to get a SB so whats the difference with a LR and a HR running at 6V?

[BiffRocko]

6v would kill an LR atty pretty quickly. You'd want to use a standard atty or a high voltage atty. If you know the resistance of the atomizers you're considering, you could use the formula to calculate the exact difference in wattage.

[kushka]

Thanks BiffRocko - I was beginning to understand (then bring up ohms made me lose it) but anyway - my question has to do with the proper equipment for the device.

I started with cartomizers, and dripped just when mixing DIY to taste a new brew. I have a 5v a 3.7, egos, and rn4081s. I mostly use the cheapest cartomizers I can find. It seems they do not last as long at 5V as with the others. I bought some cheap LR cartomizers. They did not last long at all.

The other day I decided to really try dripping - I only had 3 cheap atomizers. But, I ended up loving it - especially with my 5v, but 24 hours later I had killed all three.

I decided that I was using the wrong type atomizer on the 5V and should be using HR - but now I understand what I would be doing then is just basically turning my 5V into a 3.7 vape.

Is it true that low resistant attys and 5V vapping kill atomizers faster then HR resistant or 3V vaping? If that is true is there a kind of atty or carto that would last a long time at 5V - while still giving a 5v vape?

[BiffRocko]

The reason a LR atty isn't going to last as long in a high voltage device is the amount of heat produced. The wire that makes up the coil is very thin. More heat is going to degrade it faster eventually causing it to break. It's similar to running a light bulb rated for low wattage in a lamp that puts out high wattage. The overload is going to cause the filament in the bulb to pop.

By the way, if anyone with more electronics knowledge than me sees me saying something incorrect, please correct me. As I said, my knowledge of electronic theory is not advanced and I'd love to learn more too.

[Zenfrogs]

great thread! thanks for taking the time to write this up!

[BuzzKill]

One other area that should be mentioned is that LR attys require more CURRENT than regular attys ( 3 ohms or so ) this will drain the battery faster and will stress the battery harder ( beyond the design limits actually ! )

That is why controlling the voltage turns out to be a better design , you can fine tune the voltage to the atty resistance and keep your current lower and closer to the design requirements of the battery's , most batteries we use ( well say 1 16340 or CR123 etc. ) have a MAX current discharge rate that they are designed for , in many cases this rating is exceeded ( Chinese batteries do not have the rating's on them , or say a 510 or 901 style batt or Ego etc. )

Anyhow this is something else to consider , LR atomizers are great and get the power up there into the 7-9 watts area but also stress the batteries beyond their design limits .

[BiffRocko]

One other area that should be mentioned is that LR attys require more CURRENT than regular attys ( 3 ohms or so ) this will drain the battery faster and will stress the battery harder ( beyond the design limits actually ! )

Agreed. I've decided that all of my battery purchases from this point forward will be the AW LiMN high drain variety. From what I understand, the fact that they store less charge (less mAh) doesn't translate directly to shorter battery life because it can keep up with the current draw. Do I have that right?

[o4_srt]

GREAT post! I, myself, got tired of explaining how it works. This thread was definitely needed, perhaps a mod could make it a sticky?

@brad: in order to achieve 5 volts from 14500 batteries, they need to be wired in parallel (positive end to negative end), producing a Vt of 7.4 volts. This is usually regulated down to the required voltage.

Additionally, each 14500 battery is (usually) rated around 900 mah. In order to achieve 1800 mah from two batteries, you need to wire them in parallel (both positive ends tied to together, both negative ends tied together). However doing so will only net 3.7 volts (voltage is constant in a parallel circuit, current is constant in a series circuit).

Using 2 14500 batteries in series will net roughly 900 mah, still a lot better than any standard ecig battery produced.


However, using a step-up converter could solve the problem, boosting the 3.7v output of 2 14500 batteries to the voltage you require. But that adds circuitry that you are trying to avoid.

[humpty]

Thnx for the info.
Still don't get the point of HV attys though. Increasing resistance means less current. Are they supposed to offset a voltage that's too high?