OHMS questions

[MicheleMarie]

Can someone explain to me about ohms and the best ohms to use? I have a VV 1100 mah ego and my husband is using a 900 mah ego battery. We both like one particular flavor, however when he vapes it, he gets little to no vapor while I get tons with my VV battery. I know that is because I can set my VV higher. This got me wondering about ohms though...

He is using the Kanger T3S and I'm using a Protank, both with 2.5 ohm coils. Would he get better results with lower ohms on his coils? What about me? Should I be using the lower ohms? I've been pretty happy with my set up because I can adjust my battery accordingly and most of the time I can use it set at 3.8... TIA for any input!

 

[Geckgo]

short answer: yes, lower tends to be better, but don't go crazy with it if you don't have a grasp on electronics and ohms law.

There's calculators all over the place. Your batter should maintain a more-or-less constant voltage depending on the setting where his will go from 4.2 on a full charge to 3.2 on empty (approximate for Li batteries).

IMO, easiest solution is to get him a VV as well, or both get VV/VW or VV mods and learn just a little about batteries. There are several posts on here answering most questions on the subject.

 

[Geckgo]

oh yea, your basic equations where R=resistance in ohms, V=voltage, and P=power in Watts, I = current

V = I x R
I = V / R
P = Vsquared / R = V x I


hope this is helpful. I hope I didn't make a mistake, it's early. I've found that more watts = more cloud

 

[Topwater Elvis]

Can someone explain to me about ohms and the best ohms to use? I have a VV 1100 mah ego and my husband is using a 900 mah ego battery. We both like one particular flavor, however when he vapes it, he gets little to no vapor while I get tons with my VV battery. I know that is because I can set my VV higher. This got me wondering about ohms though...

He is using the Kanger T3S and I'm using a Protank, both with 2.5 ohm coils. Would he get better results with lower ohms on his coils? What about me? Should I be using the lower ohms? I've been pretty happy with my set up because I can adjust my battery accordingly and most of the time I can use it set at 3.8... TIA for any input!

With a vv battery you adjust the power going to the head to find your sweet spot, with a fixed power battery you change head/ coilresistance to find it. A 1.8 ~ 2.2 with a non variable ego type battery should increase vapor flavor & th.

 

[dice57]

When I used an ego style device, I preferred 1.8 ohm coil heads. lower ohms will produce more watts, given the same applied voltage.. Watts = Voltage Spuared, divided by resistance (ohms). Ohms law. In one form.

mah is just the amount charge stored in the device, milliamp hours, the more mah a battery has, the longer the batter will vape for before recharging. All ego's have the same voltage out put. When you start out with a fresh battery, it puts out 4.2 volts, as it gets used up the voltage will drop down, lowering the watts generated at the coil. Once the voltage drop to 3.5 volts, with a load on, the vapes quality is reduced.

Depending on your atomizer and how well it wicks, will ultimately determine if the lower ohm coil is suitable. Also the juice sometimes vapes better at a different watts dependent on your atomizer.

 

[Stosh]

For a fixed voltage eGo a 1.8 - 2.2 ohm coil usually hits the sweet spot. If it gets a bit too hot you can pulse the fire button for a "manual variable voltage"...

For VV a 2.5 - 3.0 ohm coil gives you adjustment room up or down to match what fits your juice. Many vapers find fruit flavors like a lower setting, and coffees or tobacco a bit higher....

 

[MicheleMarie]

thank you for the replies - so I should either get my husband a VV battery or some new coils with lower ohms. He seems pretty set on his batteries so I'll grab him some new coils during all of these sales today!

 

[p.opus]

I agree with those who say get a variable voltage or variable wattage battery in lieu of changing coil resistance, for the following reasons:

1. Changing coil resistance was the old way of coaxing more flavor from a fixed voltage battery. Lowering the resistance of the coil will increase the amperage draw of the battery and your battery will discharge sooner.

2. DELETED BECAUSE IT WAS WRONG!!!! (GRIN!!!!!)

3. Lower ohm coils are not a magic bullet. Coil resistance can vary as much as +/- .3 oms from it's rating,

4. Lower ohm coils will not give you a consistent vape throughout the batteries discharge cycle.

5. Vaping on a fixed voltage battery is kind of like putting a condom on in the middle of having sex. It feels great at first and then feels like nothing towards the end.

Let's use your example

You use a variable voltage battery set at 3.8 volts for a 2.5 ohm coil.
You are driving the Atty at 5.7 watts. (I prefer 6.5 to 7.0 watts on the Kanger coils, but no matter).
Your husband is driving that coil at 4.2 volts at full charge to lets say 3.6 on the lower end.
At full charge he's hitting the atty at 7.05 watts which is nice, and as it drains he gets down to 5.18 watts, which is nothing.


If you use a 2.2 ohm coil. You would need to lower your battery down to 3.5 volts to get the same wattage as you do at 3.8 now
Your poor husband however will be pushing wattage at 8.0 watts on a full charge and will almost certainly be tasting burnt flavor. My juice starts tasting burnt at 7.5 watts. When his battery is down to 3.6 volts, He'll be pushing 5.89 watts. which is still more than what you are currently pushing.

Watts are the key to flavor. Adjusting voltage and resistance is merely a means to get to a desired wattage indirectly. Variable Voltage batteries are nice because you can adjust the voltage to your flavor and the battery will attempt to maintain that voltage throughout the discharge cycle, allowing you a more consistent vape. But since resistance does vary between coils, you may need to adjust your voltage each time you put on a new coil.

Variable wattage, is sort of set it and forget it. You adjust the battery to produce the wattage you prefer (which is what you were really doing with a variable voltage battery), the battery will automatically adjust it's voltage to produce the same watts. That way when you change heads or attys, if the resistance in the atty changes, the battery compensates and you get a consistent vape throughout.

My favorite Variable wattage battery based on price point, form factor and performance is the iTaste vv3.0. I set my wattage between 6.5 and 7.0 watts and I'm good to go. They retail at about $50.00 a piece but you can find them at $30 or less (especially now during Black Friday weekend). Get a couple for you and your husband. You will not regret your decision.

For more information about the battery and a picture you can read my review here:
http://www.e-cigarette-forum.com/fo...itaste-vv3-review-rev-1-rev-2-comparison.html

 

[Nibiru2012]

As some of the others have replied, a Variable Voltage device would be his best bet.

Perhaps surprise him with a stocking stuffer for Christmas. Maybe an Innokin iTaste VV v3.0?
Much sturdier than EGO units plus it has both variable voltage and variable wattage plus it's heavy duty riveted construction.

​

Get yourself one at the same time too! These cost for the battery unit with charging cable, anywhere from about $30-40. Some websites are offering very good sale prices and discounts now that the Christmas season is here.

Whatever you decide though will be the right one for your circumstances.

 

[Vapoor eyes er]

Some eGo's fire at 3.3 volts while others fire at 3.7 volts. If your hubby's eGo is firing at 3.3 volts the best ohms would be 1.8. On my eGo/ Kgo 3.7 volt I use 1.8 ohms. 2.5 ohms is way too high and as you can see will always give a weak vape on an eGo style PV.
As far as your VV around 2.4'ish ohms is best as you gives you the widest range of volts possible.
Here's a chart that gives a "general" idea. You generally want to use an ohms that is in the middle of the light green area.
http://25.media.tumblr.com/tumblr_m9dkanCt0I1qc8949o2_1280.png

 

[Geckgo]

You husband sounds like he's not into gadgety things, how is he with electronics. Might look into a mechanical mod and RBA. If he wants to keep it kinda small with a regular ego size, I suggest the iTaste above or just get the low ohm coils and keep it slim and simple. With a simple ego type setup and just replacing coils he's going to have a less satisfying vape, but might be good enough for him. All depends on what you want. VV egos are a big step up from regular ego batts though, and not much of an increase in size (other than added length for the same mAh). It's really up to him in the long run, I wouldn't try talking my wife into something, I just give her suggestions in passing and let her sample my stuff to see how she likes it. She didn't want one of them "big ole egos" till she tried a new flavor in one of my tanks. She screwed a tank I gave her onto her blu battery for a while and then I "accidentally" left a couple ego batts and a charger at the house when I came to work this time out (I stay away from home for weeks at a time). Temptation and curiosity usually win out when new gadgets are laying around.

 

[NicoHolic]

All your husband needs is 1.8Ω heads if his eGo is the typical 3.3V model. It'll give him the power you get with 2.5Ω heads at 4.6V.

That might be too hot for some on the 3.7 volt Kanger EVOD batteries, where 2.2Ω would be the ticket.

With VV, there's no need for you to change resistance.

 

[MicheleMarie]

My husband is just getting started, this is more "my thing" right now (I've been vaping about 2 months now) although I'm working on converting him and getting him off the analogs. Right now he's cut way back on them, he hasn't completely quit yet. He just wants to change coils, he doesn't want new batteries right now so that's probably what I'll do, just get him some new coils - although that Innokin iTaste VV v3.0 has me intrigued for myself... I just upgraded recently to the VV eGo batteries but the prices are right right now.... hmmm

 

[Vapoor eyes er]

Realize also the advertised ohms of clearos, cartos, etc is not always accurate. I test all mine and have found them to be + or - 10- 20%.

 

[p.opus]

My husband is just getting started, this is more "my thing" right now (I've been vaping about 2 months now) although I'm working on converting him and getting him off the analogs. Right now he's cut way back on them, he hasn't completely quit yet. He just wants to change coils, he doesn't want new batteries right now so that's probably what I'll do, just get him some new coils - although that Innokin iTaste VV v3.0 has me intrigued for myself... I just upgraded recently to the VV eGo batteries but the prices are right right now.... hmmm

Baby Steps.....Baby Steps.... Buy your self the iTaste and give him your VV's. Tell him it will work better on the coils you already have and you both will be able to use the same coil. Show him how easy it is to twist the bottom to get to his desired flavor/vapor and let him have at it.

When he starts moaning an groaning because he keeps having to adjust the battery every time he swaps heads or tanks, break out your iTaste and say "hmmmm.....Tha't odd, I haven't had to adjust mine at all......"

 

[danny4x4]

2. Lower ohm coils tend to burn out quicker because they usually use thinner gauge wire for the coil.
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Nope. Lower resistance coils use LOWER gauge wires, but they are THICKER.

High gauge=thin wire
Low gauge=thick wire

 

[Traver]

It is just a lot simpler and more effective to have a vv device.

Some juices taste better at high watts and some taste better at a lower watt setting. Most people also find that their taste changes during the day and day to day. With vv or vw you can just press a button and change the amount of power going to the coil to suit your taste. You can achieve the same thing with different ohm coils but it's a lot more trouble to do it that way.

Here is a watts and voltage calculator to give you an idea of how it works. just put in you ohms and voltage and it will return the number off watts and amps. Remember watts is the amount of power the you coil is using.
Ohm's Law Calculator

 

[p.opus]

Nope. Lower resistance coils use LOWER gauge wires, but they are THICKER.

High gauge=thin wire
Low gauge=thick wire

I stand corrected. Thinner wire equals higher resistance and lower current capability. However lower resistance does mean higher current, and thus higher drain.