Is there any difference between a 3.7v + 1.5ohm & a 5.6v + 3.5ohm? (SAME Wattage Power, Ohm's law)

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CraigHB

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One thing to consider with the LiFePO4 batts is they do have higher internal DC resistance which means voltage sags a lot more under load than a regular Li-Ion batt. The lower the resistance of the atomizer, the more voltage sag you're going to get. To get a good measurement of the power you're delivering to the atomizer, you should take a voltage reading under load, in other words, when the atomizer is powered. You may find you're vaping closer to 5V than 6V. I use a VV mod that does deliver indicated voltage to the atomizer and 6V is too hot for my preference, even with the 3Ω cartomizers I typically use.
 

nocturn4l3030

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One thing to consider with the LiFePO4 batts is they do have higher internal DC resistance which means voltage sags a lot more under load than a regular Li-Ion batt. The lower the resistance of the atomizer, the more voltage sag you're going to get. To get a good measurement of the power you're delivering to the atomizer, you should take a voltage reading under load, in other words, when the atomizer is powered. You may find you're vaping closer to 5V than 6V. I use a VV mod that does deliver indicated voltage to the atomizer and 6V is too hot for my preference, even with the 3Ω cartomizers I typically use.

good info. i been using this voltage meter from madvapes and from what its reading...they stay at 6.6-6.5v offload for a long time..underload at 6.6v it always reads 6v. love these batteries.
 

theguy01

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Id like to hear from someone who uses maybe 510s from the same vendor at both voltages and see what they have to say.

I've been curious about this myself, so I'll be the guinea pig. :vapor:
I'll use tests where I can get the wattages as close as possible.

Juice: AVE, Boba's Bounty, 24mg, 100% VG.
Vape #1: Boge LR Carto, Provari reads at 2.1. Running at 4.1V for 8.004W
Vape #2: Boge SR Carto, Provari reads at 3.0. Running at 4.9V for 8.003W

Juice: AVE, Hype, 12mg, 90%VG, 10%PG
Vape #1: Boge LR Carto, Provari reads at 2.1. Running at 3.7V for 6.52W
Vape #2: Boge SR Carto, Provari reads at 3.1. Running at 4.5V for 6.53W


Initial biases:
I mostly use the LRs when I'm out and about (ego-T battery), but when I use them on my Provari I tend to like them in the 4.1-4.3V range.
I tend to vape the SRs at 5-5.3V.

Test Results:
Boba's Bounty
Vape #1:
Throat hit: really strong. I don't vape at 24mg as much as I used to.
Vapor: it's 100% VG, so tons of vapor. It's also fairly warm, at least compared to vaping this on an ego battery.
Flavor: It's Boba's, so I'm not going to describe the taste. :p Very good, strong flavor.
Vape #2:
Throat hit: again, for me, really strong.
Vapor: Wow, comparing back to back like this, it seems like this vapor is cooler, and there seems to be even more of it.
Flavor: strong flavor, seems identical to Vape #1.

Hype
Vape #1:
Throat hit: solid.
Vapor: Tons of vapor, average temperature (I find the LR vapor gets warmer in the 4V range).
Flavor: It's delicious, tons of flavor.
Vape #2:
Throat hit: I can't tell the diff between this and #1 really.
Vapor: As in the prior test, it seems that vapor is maybe a bit bigger than in vape #1. Doesn't seem appreciably cooler than in Vape #1, but Vape #1 wasn't warm by my standards, so, I dunno.
Flavor: Tons, can't tell a difference.

As a quick third test I did the hype again at 4.2V on the LR (8.4W) and 5.1V on the SR(8.39W), which is closer to where I vape them normally. Again, the SR setup seemed to give a bit more, and slightly cooler vapor, but I couldn't tell a difference in throat hit or flavor.


So...based on this entirely unscientific test, for me, the higher-resistance setup produced a bit more vapor (and generally a cooler vapor) than the same wattage vape with a LR/lower voltage setup.

It's also fairly amusing to me that my gut-feel vaping (LR in the low 4V range, SR in the low 5V range) largely works out to be +/- 0.5-1W of each other with the cartos I'm using. Guess I have a sweet spot in the 8-9W range. who knew?! :blink:
 
One thing to consider with the LiFePO4 batts is they do have higher internal DC resistance which means voltage sags a lot more under load than a regular Li-Ion batt. The lower the resistance of the atomizer, the more voltage sag you're going to get. To get a good measurement of the power you're delivering to the atomizer, you should take a voltage reading under load, in other words, when the atomizer is powered. You may find you're vaping closer to 5V than 6V. I use a VV mod that does deliver indicated voltage to the atomizer and 6V is too hot for my preference, even with the 3Ω cartomizers I typically use.

I use A123 lithium iron phosphate 1100 mah cells and I can assure you the above is not the case... Among the lowest ir and highest voltage under load (per c discharge) I've ever tested on the cba, regardless of chemistry....
 

jonny2hottie

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hey nocturn...biggest difference i noticed when jumping from a normal mod to a provari is that voltage you set on the provari is the voltage it puts out underload. WHICH IS AWESOME. a normal mod lets say a silver bullet with a 3.7v battery underload would be about .1-.2 or more volts less under load depending on which atty is used. and will drop slowly as you hold down the button during a vape. with the provari its a consistant voltage under load the entire time its fired.

VAPES LIKE A DREAM!
 

ukeman

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I have 2 Vari's from the first run... actually sold one to vaper in Singapore last week, and got a new one in... love them.
But I get similar boosted power VV from BuzzPro, (infinity, vvpv coming out w/in a month with the same internals), and a SgtArmyTankII... (i can't put this one down; just got it).
I got the BP a couple weeks ago and it and the sgt vv use dial adjusts...which is easier to change voltage while dripping. I like to start out higher and gradually go down as i reduce the amount of juice in the atty.
I sold my GGTS, because i am so spoiled by these regulated boosted VV's... it's just too good and too easy.!

hey nocturn...biggest difference i noticed when jumping from a normal mod to a provari is that voltage you set on the provari is the voltage it puts out underload. WHICH IS AWESOME. a normal mod lets say a silver bullet with a 3.7v battery underload would be about .1-.2 or more volts less under load depending on which atty is used. and will drop slowly as you hold down the button during a vape. with the provari its a consistant voltage under load the entire time its fired.

VAPES LIKE A DREAM!
While i'm listing there's the Monkeybox VV and Red Sky too and the Krimson box guy has them in plastic boxes; very cheap and you get the goods.
 

nocturn4l3030

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I've been curious about this myself, so I'll be the guinea pig. :vapor:
I'll use tests where I can get the wattages as close as possible.

Juice: AVE, Boba's Bounty, 24mg, 100% VG.
Vape #1: Boge LR Carto, Provari reads at 2.1. Running at 4.1V for 8.004W
Vape #2: Boge SR Carto, Provari reads at 3.0. Running at 4.9V for 8.003W

Juice: AVE, Hype, 12mg, 90%VG, 10%PG
Vape #1: Boge LR Carto, Provari reads at 2.1. Running at 3.7V for 6.52W
Vape #2: Boge SR Carto, Provari reads at 3.1. Running at 4.5V for 6.53W


Initial biases:
I mostly use the LRs when I'm out and about (ego-T battery), but when I use them on my Provari I tend to like them in the 4.1-4.3V range.
I tend to vape the SRs at 5-5.3V.

Test Results:
Boba's Bounty
Vape #1:
Throat hit: really strong. I don't vape at 24mg as much as I used to.
Vapor: it's 100% VG, so tons of vapor. It's also fairly warm, at least compared to vaping this on an ego battery.
Flavor: It's Boba's, so I'm not going to describe the taste. :p Very good, strong flavor.
Vape #2:
Throat hit: again, for me, really strong.
Vapor: Wow, comparing back to back like this, it seems like this vapor is cooler, and there seems to be even more of it.
Flavor: strong flavor, seems identical to Vape #1.

Hype
Vape #1:
Throat hit: solid.
Vapor: Tons of vapor, average temperature (I find the LR vapor gets warmer in the 4V range).
Flavor: It's delicious, tons of flavor.
Vape #2:
Throat hit: I can't tell the diff between this and #1 really.
Vapor: As in the prior test, it seems that vapor is maybe a bit bigger than in vape #1. Doesn't seem appreciably cooler than in Vape #1, but Vape #1 wasn't warm by my standards, so, I dunno.
Flavor: Tons, can't tell a difference.

As a quick third test I did the hype again at 4.2V on the LR (8.4W) and 5.1V on the SR(8.39W), which is closer to where I vape them normally. Again, the SR setup seemed to give a bit more, and slightly cooler vapor, but I couldn't tell a difference in throat hit or flavor.


So...based on this entirely unscientific test, for me, the higher-resistance setup produced a bit more vapor (and generally a cooler vapor) than the same wattage vape with a LR/lower voltage setup.

It's also fairly amusing to me that my gut-feel vaping (LR in the low 4V range, SR in the low 5V range) largely works out to be +/- 0.5-1W of each other with the cartos I'm using. Guess I have a sweet spot in the 8-9W range. who knew?! :blink:

thanks for being the test dummy! appreciated

hey nocturn...biggest difference i noticed when jumping from a normal mod to a provari is that voltage you set on the provari is the voltage it puts out underload. WHICH IS AWESOME. a normal mod lets say a silver bullet with a 3.7v battery underload would be about .1-.2 or more volts less under load depending on which atty is used. and will drop slowly as you hold down the button during a vape. with the provari its a consistant voltage under load the entire time its fired.

VAPES LIKE A DREAM!

wasup buddy, ya i love that about my provari and my vv box mod, just being able to dial in the underload voltage is awesome.
 

nocturn4l3030

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^ np

old thread of mine -.-

cant conclude too much difference still....currently i switch between hv and lv 306s often these days ans its just too inconclusive because im using different brand atties.

i will say though some juices taste better at hv or vice versa....but it could be the atties too! lol...ok i guess thay doesnt help much -.-
 
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