Become a Patron!

More voltage on higher resistance??? Am I ruining battery?

Hi :)

So I was using a Smok Prince on my drag mod for around 3 weeks, successfully quit smoking this time round :) I’ve really started to love vaping and it’s become much more like a hobby to me now.

So I decided to try dripping, bought a dead rabbit and absolutely love it so much I have sold the Prince tank and now I only drip.

My question is, to begin with I have decided to use pre made coils, I’ve been buying wire and stuff in preparation to start building my own coils.

I bought 10 x coil master fused Clapton’s 28gax2 + 32ga, the duel I have installed is coming out at 0.44ohms, firing around 50-70watt which I find is perfect it’s firing around 5.6 volt, in my Prince tank I used t10 coils coming out at 0.13ohm and at 80watt firing at 3.2 volt?

Can someone please explain to me why the 0.44 fused Clapton’s I’m dripping are requiring almost double the volts? I always thought a lower ohm would drain a battery faster? Or am I getting confused here lol

I guess what I’m concerned at is destroying batteries unnecessarily, as I’m new to dripping I want to kind of tailor my vaping to dense and good flavour (not so much huge clouds) and preserving batteries best I can.

It seems since I’ve started dripping the battery has gone downhill very fast, I’m using Samsung 30q’s by the way.

Any help would be greatly appreciated :) cheers
 

HondaDavidson

Gold Contributor
Member For 4 Years
Amps is amps.. Whether they come at low ohm and volts or High ohm and volts... What matters is How many and how fast you pull amperage.. This is why OHM Law is important and for regulated mods Watts Law.
 

Letitia9

Citrus Junkie
VU Donator
Platinum Contributor
Member For 4 Years
VU Challenge Team
Hello Clean and welcome to VU. I barely understand myself and cannot articulate what I do understand. Hopefully someone will come along soon to help you understand. the differences..
 

champton

Bronze Contributor
Member For 4 Years
It's not voltage that kills your batteries, it's amperage. It's basic Physics. The voltage is doubled on a higher ohm coil because the higher coil needs more "oomph" to push through the resistance. Resistance, as the name implies, "resists" amperage. Voltage provides that oomph that the current needs to make the trip from your batteries through the circuit to its destination - your coils. There are a variety of equations you can use to illustrate this relationship. These equations are laid out in the very simple chart you see below. These equations show Ohm's Law in action.

dcp4.gif


To show how coil resistance affects both voltage and amperage, we use one of the most important Ohm's Law equations: I = P / V (Current is equal to the quotient of the power and the voltage). Why am I saying this equation is so important? Because it's actually the AMPERAGE that measures how much electricity is flowing through a circuit. Voltage only applies pressure to the electrons flowing through the circuit. That's why you can touch a Van Der Graff and still live, even though there's actually 100,000 volts travelling through the average school-sized model. However, the current is so small that there's almost nothing to push through the circuit, hence you only feel static, resulting in the classic "hair-raising" experience. (See what I did there? LOL!) I've been seriously electrocuted. It's not fun. It feels like you got rammed in the chest by a 300-pound football player, and if you receive enough current, it can temporarilly paralyze every muscle in your body or even kill you by stopping your heart.

Now, let's use your previous coils as an example.

in my Prince tank I used t10 coils coming out at 0.13ohm and at 80watt firing at 3.2 volt?

To show the current of this setup, we use I = P / V. So we plug in our numbers like so.

80 / 3.2 = 25 amps on the dot. Not too dangerous to vape under "normal" circumstances, but it leaves very little margin for error and doesn't account for heat expansion, which can cause the resistance to fluctuate and the current will go up or down, depending on if the resistance goes up or down.

Now let's compare that to your new coils.

I bought 10 x coil master fused Clapton’s 28gax2 + 32ga, the duel I have installed is coming out at 0.44ohms, firing around 50-70watt which I find is perfect it’s firing around 5.6 volt

Again, using I = P / V, watch what happens to the current in this setup. We'll say you vape at 70 watts.

70 / 5.6 = 12.5 amps

In this setup, we have more pressure pushing the current through the circuit. However, the current is having a more difficult time going through the circuit. Why is that? Because you have over triple the resistance. The current is actually moving more slowly through the circuit. Think of resistance like a Football player (American Football, not European Football, aka Soccer) trying to prevent you from making a touchdown. You need more voltage to push your way through that resistance. Hence your voltage doubles because you now need a stronger force to apply more pressure to get the current into your coils.

And here's where you need to be careful. Since heat buildup is a side effect of too much amperage, if you have too much current flowing through your coils and too little resistance to stop it, you're going to have a thermal runaway, your batteries will overload, and your mod will go BOOM! To further prove this, let's see what happens when you run a 0.05Ω coil. I must advise you NEVER to go this low on the resistance for the aforementioned reason. There are people who do vape that low, but they put a lot of experience and research to work in order to do that as safely as possible.

For the sake of this exercise, let's say you've got no experience in Ohm's Law whatsoever, and you've got no regard toward anything except "blowing sick clouds, bro" (believe it or not, there are people like that). You're vaping this coil at 120 watts, which is definitely suicidal for most, if not all, vapers. To show just how much amperage you're dealing with, we use I = √(P / R).

120 / 0.05 = 2400
√ 2400 = ~45 amps

Now you're pulling current faster than even the best batteries can provide it (very dangerous!) The batteries will vent and if your mod doesn't have vent holes, superheated gases will continue to build up and build up and build up until the gas has nowhere else to go, and the inevitable happens:


Another way to think of this relationship is to think of the plumbing inside your house. Your local water has to come from somewhere. Usually it's from a purification plant, and that works much like a battery. The pipes themselves can be considered the circuit, with the diameter of the pipes regulating the flow of water the way resistance regulates the flow of electricity through a circuit. Water is sent through a pressurizer that works like voltage in a circuit, and the water itself can act as the current. In fact, the plumbing inside your house is very much like an oversized science fair project about Ohm's Law!

Hope this helps. :)
 
Last edited:

gbalkam

Gold Contributor
Member For 4 Years
ECF Refugee
Reddit Exile
Hi :)

So I was using a Smok Prince on my drag mod for around 3 weeks, successfully quit smoking this time round :) I’ve really started to love vaping and it’s become much more like a hobby to me now.

So I decided to try dripping, bought a dead rabbit and absolutely love it so much I have sold the Prince tank and now I only drip.

My question is, to begin with I have decided to use pre made coils, I’ve been buying wire and stuff in preparation to start building my own coils.

I bought 10 x coil master fused Clapton’s 28gax2 + 32ga, the duel I have installed is coming out at 0.44ohms, firing around 50-70watt which I find is perfect it’s firing around 5.6 volt, in my Prince tank I used t10 coils coming out at 0.13ohm and at 80watt firing at 3.2 volt?

Can someone please explain to me why the 0.44 fused Clapton’s I’m dripping are requiring almost double the volts? I always thought a lower ohm would drain a battery faster? Or am I getting confused here lol

I guess what I’m concerned at is destroying batteries unnecessarily, as I’m new to dripping I want to kind of tailor my vaping to dense and good flavour (not so much huge clouds) and preserving batteries best I can.

It seems since I’ve started dripping the battery has gone downhill very fast, I’m using Samsung 30q’s by the way.

Any help would be greatly appreciated :) cheers

Simple answer.. larger coils require more power (watts) to run. The more watts you draw the faster the battery runs down. With a regulated mod, you don't need to worry about damaging your batteries. Mod does all the work. Now as a cell is discharged and recharged it takes 1 off its expected recharge cycle life. So if you vape at 15 watts all day and then recharge, that is 1 cycle. If you vape at 50 watts for 8 hours and have to recharge, that again, is 1 cycle. So at 50w you cycle 3x per day vs 1 cycle per day at 15. This is only as an example. Now, that said, higher watts mean better vaping options, if you like clouds and flavor. So it is up to you.. if you want to enjoy your vape more, spend the money on the batteries. You should get 8 months or more easily anyway.
 

VU Sponsors

Top