Become a Patron!

Ohm's and volts

KeelieKimber

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
I'm using a Kanger Subtank with a Tesla Invader 2 mod. I am clueless about volts, watts and ohm's. (Stop laughing ;) )

Will someone PLEASE explain the difference in the .5 and 1.2?!?!

Besides a volt meter, how do I know how many volts I use?

I tried the 1.2 coil and was less than impressed.

Thankx!
 

IML8

Bronze Contributor
Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
As ohms (resistance) go up, it requires higher voltage to maintain the same wattage.

At .5 ohms it only requires 2.7 volts to achieve 15 watts (of power), but at 1.2 ohms it requires 4.2 volts to achieve 15 watts (of power). It's all a balancing act. There are ohms calculators all over the internet that will help demonstrate the relationship. Steam Engine has popular one for vapers.

I thought it might be helpful to come back and add another simple way of thinking about this since it is so often misunderstood.

For someone using a fixed voltage device, lowering the ohms is essentially the same as turning up the watts. Consider a mechanical device with a battery providing 4 volts. With a 1 ohm coil, it is applying 16 watts. Using a coil with half that resistance (.5 ohms) doubles the watts to 32. It's inversely proportional and linear.

There are lots of other finer points to consider, but that's an easy way to think about it.
 
Last edited:

mprice14

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
From someone recently thinking the same thing I would say that's a good explanation. I had to get my head round lower ohms higher watts.

I was also told a rough rule...lower ohms, better taste, more smoke, less sociable in public

Sent from my SM-T800 using Tapatalk
 

mprice14

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
What if it's 2.5 ohms?

Sent from my SM-T800 using Tapatalk
 

smacksy

Platinum Contributor
Member For 4 Years
From someone recently thinking the same thing I would say that's a good explanation. I had to get my head round lower ohms higher watts.

I was also told a rough rule...lower ohms, better taste, more smoke, less sociable in public

Sent from my SM-T800 using Tapatalk
First of all if you are going to vape use proper terms...its Vapor that's inhaled and blown out..not smoke, lol

sent from my XT1080 via Tapatalk
 

mprice14

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
Thanks for your post...it's a learning curve. Everyone gets given advice and tips. Not always correct but that's why I've joined this forum. I want to learn so that one day I can be the person to point out the errors of other people wanting to learn more.

Thanks

Sent from my SM-T800 using Tapatalk
 

smacksy

Platinum Contributor
Member For 4 Years
Thanks for your post...it's a learning curve. Everyone gets given advice and tips. Not always correct but that's why I've joined this forum. I want to learn so that one day I can be the person to point out the errors of other people wanting to learn more.

Thanks

Sent from my SM-T800 using Tapatalk
You're welcome, but you have to learn yourself before you can ever teach others. And when you use proper terms people will have a tendency to think you know what you talking about.

sent from my XT1080 via Tapatalk
 

mprice14

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
You are right. I've asked loads of questions to try and learn more, and will continue to do so. I'm a recently converted smoker and enjoying the options that are now in front of me and am just getting involved...or trying to.

Sent from my SM-T800 using Tapatalk
 

smacksy

Platinum Contributor
Member For 4 Years
Well you've come to the right place! Lots of folks here that are ready to help!

sent from my XT1080 via Tapatalk
 

mprice14

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
As you're schooling me today...can you help me with a question. I bought some 2.5ohm coils can't see what wattage to use them at?

Sent from my SM-T800 using Tapatalk
 

smacksy

Platinum Contributor
Member For 4 Years
Well you've come to the right place! Lots of folks here that are ready to help!

sent from my XT1080 via Tapatalk
I see your using a Tesla mech..That 2.5 ohm build won't vape as well as a .25 build...mechs have fixed voltage..in other words you have to use a build that hits good but still is in the amp limits of your battery for saftey...A good understanding of ohms law and a working knowledge of basic electronics is a good place to start learning.. Also there are several online ohms law calculators to help..
Like I suggested earlier, its alot easier starting off with a good Variable Wattage (VW) mods than a mech..anyway, good luck and continue to ask questions..

sent from my XT1080 via Tapatalk
 

smacksy

Platinum Contributor
Member For 4 Years
As you're schooling me today...can you help me with a question. I bought some 2.5ohm coils can't see what wattage to use them at?

Sent from my SM-T800 using Tapatalk
You said you have a Tesla Invader..to the best of my knowledge that is a mechanical box mod..if that's the case you can't set the wattage...so I don't follow what your asking..I already posted a little bit about using a mech..
Maybe someone can chime in with more advise.

sent from my XT1080 via Tapatalk
 

monstamat

Member For 4 Years
Member For 3 Years
watts=voltage squared divided by resistance. for instance im vaping my .5occ at 25watts. meter on my mod says resistance is .6ohms. voltage applied is 3.9. so 25watts= 3.9x3.9/.6.
 

MrScaryZ

VU Donator
Platinum Contributor
Member For 5 Years
I'm using a Kanger Subtank with a Tesla Invader 2 mod. I am clueless about volts, watts and ohm's. (Stop laughing ;) )

Will someone PLEASE explain the difference in the .5 and 1.2?!?!

Besides a volt meter, how do I know how many volts I use?

I tried the 1.2 coil and was less than impressed.

Thankx!
Best to think in Watts only due to the Industry.. Even when comparing Mech Mods to a Variable Voltage/Wattage mod its done in Watts now please done ask about Joules that I will be posting a formula for ya as its not for the faint of heart :)
 

mprice14

Member For 4 Years
Member For 3 Years
Member For 2 Years
Member For 1 Year
Teach me then please

Sent from my SM-T800 using Tapatalk
 

VU Sponsors

Top