Sub ohm on 18350?

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inanitydefined

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They're looking a lot more appealing now that I realize it would be difficult to sub ohm on a 18350 safely :]

and you really wont notice the size too much. my All Day vape is a kylin with a nimbus clone. it measures at a hair over 5 inches with drip tip
 

dice57

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Don't be so dramatic. 2A or 20A we are talking below 75%. Try giving advice without the sarcasm. :vapor:

More risk of shorting out your build by shotty work, such as shorting to the posts, deck, or cap then a battery venting from being at under 75% capacity. Oh, and mine is on my stealth build which rarely sees hits over 1 second. So vape on in your own world, stay out of mine.


Ohh, so sorry if I got your panties in a bunch, much apologies. Didn't see anything sarcastic about my post, except for the first line of this one that is. But I will work on it, thank you so much for your deep concern about my forum wit. I was merely trying to point out the inherent danger you were submitting yourself to, and didn't realize you were such an expert and advanced user.
 

roadie

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Ohh, so sorry if I got your panties in a bunch, much apologies. Didn't see anything sarcastic about my post, except for the first line of this one that is. But I will work on it, thank you so much for your deep concern about my forum wit. I was merely trying to point out the inherent danger you were submitting yourself to, and didn't realize you were such an expert and advanced user.

I'm by no means an expert, just trying to help people with realistic expectations of builds and to understand the buffer when dealing with current and batteries. 2A's may seem small but we are talking % of its capacity. :thumbup:

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KenD

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a 1.8 amp buffer is not anything I would risk vaping, I generally like to have at least a 10 amp buffer minimum

Well, if a ten amp buffer is required you could never use 18350 batteries, not even with 3 ohm coils (well, if the new purple efest 18350s are actually 10.5a you could use them with a 6 ohm coil at 3v).

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Asmo6

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I thought the reds clocked in at 6.4a?

I run a .8 ohm dual coil on my aqua. Voltage drop is the issue. They just can't keep up. It doesn't hit hard. And they don't last.

So the answer to the question is still NO. But mainly because it sucks. The batteries can't do what you want. And if you really pushed it, there are safety concerns.

I love the people who act like the first time you fire the mod on an 18350 the earth is going to stop rotating.

As to the portion of a direct short venting your batteries. That applies to all of them. If you aren't double checking your builds and think sloppy is OK. NEWS FLASH. Your sloppy 1.5 ohm build that becomes a short... Is still a short.

At 4.2v the red efests are at 5.25 amps @.8. You will not see 4.2v at the Atty. I have an inline meter. You're probably going to see 3.5-3.6v coming through. Which is weak.

1-1.5ohm seems to fair better on the little 18350's. They won't drain anywhere near as fast either. I could go an entire day on my dual coil carto tank @ 1.5ohms.

But no, they don't immediately explode. So stop all the exaggerating fan fare. Educate without the silliness.
 
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Rob0506

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These batteries have max continuous discharge rates, but we aren't continually discharging them. I'm not saying we should go right to the limit, but a 15-20% buffer below the max continuous rate should be adequate for safety. The most important thing is to be aware of the potential, if things start to heat up where they shouldn't be, take the thing apart and don't use it again until you figure out what's wrong. The RDA will heat up, but the switch and battery tube should not. This is important not matter how much head room you have on the battery. Even 2.0 ohm coils can short out.
 

Rob0506

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Ohh, so sorry if I got your panties in a bunch, much apologies. Didn't see anything sarcastic about my post, except for the first line of this one that is.

Go back to school till you are scarred chitless learning the risks you were taking with that set up, then find the right battery and proper ohm build, wait till your hands stop shaking.

No, I don't see anything sarcastic in that at all...
 

GB023

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Don't be so dramatic. 2A or 20A we are talking below 75%. Try giving advice without the sarcasm. :vapor:

More risk of shorting out your build by shotty work, such as shorting to the posts, deck, or cap then a battery venting from being at under 75% capacity. Oh, and mine is on my stealth build which rarely sees hits over 1 second. So vape on in your own world, stay out of mine.

While there is a lot of anger in this response, there is also a lot of truth. A battery will not vent because there is less than 25% reserve. The conversation should be about safety , testing, quality builds. We have to test our batteries, before and after charging, test our builds and test again, stay within the limits of the battery we choose and enjoy....
 

sahsah

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Umm, not around me, your more than welcome doing so in the middle of the dessert or in a bomb containment chamber, or in front of the fire squad, but your are pushing 6 amps with a .7 ohm coil. The highest 350 ratted batter is 6 amps, if you kick it, it's going to be the same size as a 18490 batter, so might as well just get an amp capable 18490, plus a kick 2 only puts out 15 watts, so your other option, if you are determined to use a 18350, is to just go to 1 ohm and you'll be at 16 watts. and only drawing 4.2 amps, but even with that rig, please don't vape by me, or near flammable objects. a 1.8 amp buffer is not anything I would risk vaping, I generally like to have at least a 10 amp buffer minimum

Go back to school till you are scarred chitless learning the risks you were taking with that set up, then find the right battery and proper ohm build, wait till your hands stop shaking.

Short answer to your question is FRAK NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
A ten amp cushion??? Are you for serious...or are you just being facetious/exaggerating for effect? Because if that's true then I take it you don't really Vape with anything but 18650's, which IMO would annoy me, since I love being able to switch my setup from an all day powerhouse to a sleek stealth-vape:vapor:
 

rawr

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I am using only 18350 and 18500 efest red batteries, for now. With 18350, there is biggest voltage drop (smallest battery capacity) so its not even close to the 4V while using it on 0.6 ohm.

I = U / R , means I = about 3.7 / 0.6 = 6 amps ; P = 3.7 * 6 = 22,2W ->Why would anybody use kick2 with 0.5 ohm coil and have a limit of about 15W. Only because battery life and extra protection :)


So its safe with 0.65-0.7 ohm coil on red efest 18350 imo. 18500 are safe as low as 0.55-0.6 ohm.
 

sahsah

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I thought the reds clocked in at 6.4a?

I run a .8 ohm dual coil on my aqua. Voltage drop is the issue. They just can't keep up. It doesn't hit hard. And they don't last.

So the answer to the question is still NO. But mainly because it sucks. The batteries can't do what you want. And if you really pushed it, there are safety concerns.

I love the people who act like the first time you fire the mod on an 18350 the earth is going to stop rotating.

As to the portion of a direct short venting your batteries. That applies to all of them. If you aren't double checking your builds and think sloppy is OK. NEWS FLASH. Your sloppy 1.5 ohm build that becomes a short... Is still a short.

At 4.2v the red efests are at 5.25 amps @.8. You will not see 4.2v at the Atty. I have an inline meter. You're probably going to see 3.5-3.6v coming through. Which is weak.

1-1.5ohm seems to fair better on the little 18350's. They won't drain anywhere near as fast either. I could go an entire day on my dual coil carto tank @ 1.5ohms.

But no, they don't immediately explode. So stop all the exaggerating fan fare. Educate without the silliness.
you run dual coils totaling to .8 ohms or two .8 ohm coils? Because the first one is on the border of safe and not safe but the second scenario is waaaay past the limit (cue "push it to the limit" sound byte*)
:confused:
 

sahsah

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I am using only 18350 and 18500 efest red batteries, for now. With 18350, there is biggest voltage drop (smallest battery capacity) so its not even close to the 4V while using it on 0.6 ohm.

I = U / R , means I = about 3.7 / 0.6 = 6 amps ; P = 3.7 * 6 = 22,2W ->Why would anybody use kick2 with 0.5 ohm coil and have a limit of about 15W. Only because battery life and extra protection :)


So its safe with 0.65-0.7 ohm coil on red efest 18350 imo. 18500 are safe as low as 0.55-0.6 ohm.
I'm not sure, but reading your post it sounds like you're using battery capacity and voltage drop synonymously. If that's the case, I'd recommend reading up on battery safety in general, because they are very different terms that apply to totally different circumstances
 

rawr

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I'm not sure, but reading your post it sounds like you're using battery capacity and voltage drop synonymously. If that's the case, I'd recommend reading up on battery safety in general, because they are very different terms that apply to totally different circumstances

I dont quite understand what exactly did you mean?

Full battery has 4.2V. Materials in tube, connectors has some conductivity to do and because they are not perfect, some little amount of voltage "disappears" aka voltage drop. So i can use 4V (thats even too high for 90% of mechs, most of them are bad at voltage drop...) to get the max current. Red efest are rated at 6Amps and more.
 

dice57

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A ten amp cushion??? Are you for serious...or are you just being facetious/exaggerating for effect? Because if that's true then I take it you don't really Vape with anything but 18650's, which IMO would annoy me, since I love being able to switch my setup from an all day powerhouse to a sleek stealth-vape:vapor:

No use both 18650 and 26650, oh, have a dual 26500 box mod too. So yeah, if I am demanding over 20 amps from my batt, I'll use a 50 amp continuous IMR, if under 20 amps, the use the 30 amp continuous. All depends on the rba I'm building and how low she'll be. Can never tell when a switch is going to lock in the on position and fire till she's bone dead out of charge. When something like that happens, I want a batt that can put out those high amp demands without stressing it even a tad.

Don't understand the concept of stealth vape.
 

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KenD

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Hi Drew K,
Whether it is safe or not depend on the protection circuit board on bottom of battery
You need to check whether your battery comes with a protection board or not
If not, Using Lithium battery might be very risky.
Please be careful.

No, protected batteries should not be used for vaping. They are of a volatile chemistry and can't handle high amp draws. If the protection circuitry fails, and it can, the batteries can vent violently. High drain IMR or hybrid chemistry batteries is what you want to use. They are unprotected, but are less likely to fail catastrophically.

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rawr

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I'm not sure, but reading your post it sounds like you're using battery capacity and voltage drop synonymously. If that's the case, I'd recommend reading up on battery safety in general, because they are very different terms that apply to totally different circumstances

In general, lower the capacity of battery means higher the voltage drop will be. Of course that doesnt mean, that i can use standard li-ion for subohming. Small red efest are rated at 6amp and are high drain imr batteries!
 

KenD

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In general, lower the capacity of battery means higher the voltage drop will be. Of course that doesnt mean, that i can use standard li-ion for subohming. Small red efest are rated at 6amp and are high drain imr batteries!

It's about internal resistance, not capacity. High drain safe chemistry batteries tend to have both lower capacity and lower internal resistance, the latter of which means less voltage drop. For example, the 2100 mAh Sony vtc4 has much less of a voltage drop than 3400 mAh Panasonics. 18350s obviously have less capacity than 18650s and they tend to have higher internal resistances. However, even here higher capacity 18350s have more of a voltage drop than lower capacity high drain ones.

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