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Here's a neat little chart I found awhile back that should give you some basics:
A significant factor in atomizer performance is its resistance (measured in ohms). On the same battery, the lower the atty's resistance, the greater the intensity of the vape (and the greater the risk of burning out the atomizer).
The following are the resistances of the most popular atomizers:
1.5 ohms: LR (low-resistance) atomizers (306, 510, 801, and 901)
2.0 ohms: alternative LR attys (510, 801, and 901)
2.2 ohms: 306 atomizer (also now used on eGO and other Fat Batts)
2.3 ohms: 510 atomizer (also used on eGO and many other Fat Batts)
2.5 ohms: semi-LR 801 atty and semi-HV 510 atty
3.0 ohms: KR808D-1 cartomizer (described on next page)
3.5 ohms: 801 (penstyle) atomizer and alt HV 510 atty (for 5V mods)
3.7 ohms: 901(mini) atomizer
4.5 ohms: HV atomizers (for use on 6V mods)
5.2 ohms: HV atomizers (for use on 7.4V mods)
This info is old and dated, but still accurate as far as it goes...
Other's will have more in-depth information, I'm sure, on lower, and even sub-ohm coils...
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what battery/device are you using?
The higher the ohms, the higher voltage you can select.
If you have a variable wattage device....it automatically adjusts the voltage based on the resistance it detects (ohms) from your delivery device...and thus keeps the same wattage.
1.8ohms is good for like 3.4-3.8volts i believe
2.0-2.5 ohms is good for like 3.8-4.3ish volts
3+ ohms works good with 4-5volts+
Thats obviously a rough guide....it is similar to how I gauge.
2.0-2.5 ohms is good for like 3.8-4.3ish volts
3+ ohms works good with 4-5volts+
Thats obviously a rough guide....it is similar to how I gauge.
This is me too...
The lower the ohms the more heat that is generated at any specific voltage, and the faster your battery will drain.
More heat generally equates to better vapor and throat hit, but there IS a point of diminishing returns...
Excessive heat will sometimes kill the flavor and create a harsh scratchy throat hit...
And there is always the possibility of burning your coils if they aren't kept wet enough by the juice and wicking properties of your device.
Also don't let anyone tell you something like, "the higher the ohm the hotter the vape" etc..
This is incorrect. Heat=Power=V*V/R or in English, heat is power and power, in Watts, is equal to voltage squared divided by resistance in Ohms. For a fixed voltage decreased resistance causes an Increase in heat while increasing the resistance Decreases the heat.
Power formula: P=IV (Power is the product of voltage and current in Amps, sometimes called power law)
V=IR or I=V/R (Current, in Amps, is equal to voltage divided by resistance in Ohms, sometimes called Ohms law)
Substitute the "I" in power law with the "V/R" and you can see where the formula P=V*V/R comes from.
So 4 volts with a 2 Ohm coil is 4*4/2=16/2=8 Watts
And 4 volts with a 3 Ohm coil is 4*4/3=16/3=5.3 Watts
Now with a variable voltage device with an absolute current limit will be able to output more power with a higher Ohm coil, but few devices have an absolute limit and instead use a variable limit that varies with output voltage so it gets rather weird...
RHP
This is incorrect. Heat=Power=V*V/R or in English, heat is power and power, in Watts, is equal to voltage squared divided by resistance in Ohms. For a fixed voltage decreased resistance causes an Increase in heat while increasing the resistance Decreases the heat.
Power formula: P=IV (Power is the product of voltage and current in Amps, sometimes called power law)
V=IR or I=V/R (Current, in Amps, is equal to voltage divided by resistance in Ohms, sometimes called Ohms law)
Substitute the "I" in power law with the "V/R" and you can see where the formula P=V*V/R comes from.
So 4 volts with a 2 Ohm coil is 4*4/2=16/2=8 Watts
And 4 volts with a 3 Ohm coil is 4*4/3=16/3=5.3 Watts
Now with a variable voltage device with an absolute current limit will be able to output more power with a higher Ohm coil, but few devices have an absolute limit and instead use a variable limit that varies with output voltage so it gets rather weird...
RHP
That's what I said.... Sort of
Also, it's worth noting that most (but not all) variable Voltage and other APVs won't fire anything ~1.2 ohms or less to protect the device circuitry, the battery, and YOU!
I was going to come in here and throw out some numbers and describe ohm's law... but it seems RedhatPat beat me to it
Good description
Good description
I was going to come in here and throw out some numbers and describe ohm's law... but it seems RedhatPat beat me to it
Good description
Yeah he's quick!
Are you looking for a replacement for an old atty or a cartomizer and don't know which one to select? If that's the case, select the same ohms if you are happy with your vape; lower ohms for a warmer vape or higher ohms for a cooler vape.
If your device has VV/VW, you can buy any replacement (2 to 3 ohms will give you a greater range to adjust) and set the device to your own taste.
Sent from my iPhone using Tapatalk - now Free
If your device has VV/VW, you can buy any replacement (2 to 3 ohms will give you a greater range to adjust) and set the device to your own taste.
Sent from my iPhone using Tapatalk - now Free
No problem, mreddie. Welcome to ECF by the way. Help yourself to the punch. Pound cake's in the kitchen.
RHP
RHP
Nice work explaining guys
also.. I was able to fire a .8 Ohm on m y Itaste 134... surprised the heck outa me
also.. I was able to fire a .8 Ohm on m y Itaste 134... surprised the heck outa me
RHP
ETA: Abbell There's fluctiations somewhere, it happens. Even with a 'vari. I have documented firing my provari slightly above its 15 watt limit off a solid 1.2ohm 28g ceramic wick at 4.2-4.4v without getting E2 codes a few times which when ya do the math pushes past 15 watts. But it plays in part with absolute vs variable limit voltage outputs.
Even snapped a pic that night incase folks didnt believe me
Better lighting
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11 watts on a .8 ohm coil is pulling almost 14 amps...
That's impressive... and somewhat confusing...
My SVD has a 15 watt top end, verses the 12.5 of the 134, and according to INNOKIN both devices use the same internal PC boards...
Yet my SVD has a 5 amp limit and will not fire 1.2 ohms or less ... It just flashes 1.2 ohms on the screen...
Apparently Necessary Disclaimer: The item(s), and/or vendor(s) mentioned above, were purchased/patronized for my personal use, and in no way sold by or affiliated with my business interests...
RHP
ETA: Abbell There's fluctiations somewhere, it happens. Even with a 'vari. I have documented firing my provari slightly above its 15 watt limit off a solid 1.2ohm 28g ceramic wick at 4.2-4.4v without getting E2 codes a few times which when ya do the math pushes past 15 watts. But it plays in part with absolute vs variable limit voltage outputs.
Even snapped a pic that night incase folks didnt believe me
Better lighting
Oh I believed you, it's just strange, and amazing
I think it's fair to say this thread has run its course and the poor OP is thinking we're either showboating or he's really scared, confused, or is calling up the quit smokng hotline on his NRT products right now
Stay strong and vape on my brothers
RHP
Stay strong and vape on my brothers
RHP
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