Question about sub-ohm RBA

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FalseNeutron

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Apr 5, 2014
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Hey, everybody. Obviously I'm new to this forum, and also new to rebuild able atomizers. But I've been vaping for about 7 months now. Recently I purchased a used RBA mod from a friend. He let me test it out and all that .... before I bought it, showed me the duel coil RBA is running at about .5-0.6 ohms. I recently had to purchase my own batteries and not knowing that regular 18350's wouldn't actually fit in my vape, I purchased two mini batteries that are too small to use. I tried to actually use the batteries stacked on top of each other. It seemed to work fine, wasn't overpowering or anything. But my friend says that using two 18350 batteries with a sub-ohm atty would be highly dangerous. So now I'm just curious as to if I should just try to get rid of the batteries or continuing vaping like this until I can buy a Sony 18650. Again, I'm new to RBA's and I'm sorry for the long thread.. I just don't want to blow my hand up using two untrustworthy 3.7V batteries with a .56 ohm coil. Thanks for your answers in advance.. I'm hoping I can learn a lot from this forum in the future.
 

xanderxman

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These kinds of situations scare the crap out of me. For the love of all that is holy, get some 18650 batteries. 18350 batteries, and stacked even, are NOT what you need for sub-ohm vaping. Please do some research on battery safety before getting into sub-ohm vaping. The lack of knowledge about what batteries you need to not only "fit" in your vape but also stacking 18350s to sub-ohm tells me you might want to take a step back.
 

Bigflyrodder

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What mod did you buy? Many of the mods, clones especially, are able to be used in many different configurations including 18350 but unless the mod is designed to run on dual batteries don't do it! There are many mods out there that run on dual batteries, even a few that run on "stacked" 18350s (Vamo V5 for example) but I have never heard of a mech mod that should be run with dual 18350s.
 

*deleon517*

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totally agree with your friend here, as there are many down sides of what you are doing. A good battery like the legit AW imr 18350's is only able to safely handle .8ohm. Stacking won't allow them to handle a lower ohm safely, but will be putting out more power then the standard 18650 at 4.2v's fully charged. You would be closer to 8.4volts when both are fully charged so you are doubling your power which is not recommended.

The other down side of stacking is the chance one will discharge too rapidly. This will effect the other battery negatively. Negatively affected batteries can and will fail on you in bad ways. Stacking batteries was ideal 2 years ago when we didn't have sub-ohm and wanted to power a 2.5-3ohm carto.

Stop using those batteries and get some good 18650's like the sony vtc4 or vtc5.
 

FalseNeutron

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Apr 5, 2014
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Utah
totally agree with your friend here, as there are many down sides of what you are doing. A good battery like the legit AW imr 18350's is only able to safely handle .8ohm. Stacking won't allow them to handle a lower ohm safely, but will be putting out more power then the standard 18650 at 4.2v's fully charged. You would be closer to 8.4volts when both are fully charged so you are doubling your power which is not recommended.

The other down side of stacking is the chance one will discharge too rapidly. This will effect the other battery negatively. Negatively affected batteries can and will fail on you in bad ways. Stacking batteries was ideal 2 years ago when we didn't have sub-ohm and wanted to power a 2.5-3ohm carto.

Stop using those batteries and get some good 18650's like the sony vtc4 or vtc5.

Thanks to ALL of you guys for the very quick feedback. In all honesty, I think I've already fried one or both of these batteries! I was using one battery almost completely dead, and a half charged one to make the connection. It was vaping good, but after a while it seemed like the batteries were dying and the vapor production stopped. I tried charging the batteries off and on but now they aren't working at all. I'm not worried though, I'm going to put this RBA in a box until I get all the proper accessories for it. Like I said, I'm new to the whole rebuilder atomizer thing.. but at least I took the further precaution to ask a decent forum before I fully charge both batteries and started going crazy with my new mod. Thanks again for all the information, I'll definitely be doing more research on these things. When they say you need to be "Advanced" to use these, I didn't actually realize how serious it was. And to the people asking what kind of mod it is, I honestly have no idea. There's no labels or indications anywhere.. I'll have to ask my buddy about it soon. Once I get a good battery, possibly a new atomizer (I've been looking at the iGO-W), and all the other fun supplies used for building these things, I'll be posting a lot more on this forum. Until then I think I'll stick on the newbie side with my 1300mah ego battery and mini protank 2 hahaha. And one last time, thank a lot to anyone who replied to this. You guys were extremely helpful and I hope to see you on the forums in the future.
 

*deleon517*

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glad you listen, more often then not it feels like people ask and disregard when the anwser isn't what they want. You can also start out rebuilding your mini protank 2. just get some 32 gauge kanthal wire, some silica and a multimeter to check resistance. For your ego battery you would want to stay around 1.6ohm or higher. It's a great way to start out rebuilding with out much investment.
 

FalseNeutron

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Apr 5, 2014
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1
Utah
These kinds of situations scare the crap out of me. For the love of all that is holy, get some 18650 batteries. 18350 batteries, and stacked even, are NOT what you need for sub-ohm vaping. Please do some research on battery safety before getting into sub-ohm vaping. The lack of knowledge about what batteries you need to not only "fit" in your vape but also stacking 18350s to sub-ohm tells me you might want to take a step back.

glad you listen, more often then not it feels like people ask and disregard when the anwser isn't what they want. You can also start out rebuilding your mini protank 2. just get some 32 gauge kanthal wire, some silica and a multimeter to check resistance. For your ego battery you would want to stay around 1.6ohm or higher. It's a great way to start out rebuilding with out much investment.

Hahahah, forsure! I've actually been rebuilding my protank 2 coils and even a few iClear 30 coils for a while now.. That's why I thought I could handle a RBA. But yeah, I'll get some more stuff and definitely be reading some more things on this forum daily. Glad to be a part here, I hope I can help some newcomers on the forum pretty soon aswell.

EDIT- I did not actually plan on buying the mini 18350 batteries, but the mod I have is basically a telescope and the closest shop to me didn't have any of the bigger sizes.. So I just bought it. But I'm definitely learning more and will not make silly mistakes like this again.
 
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Baditude

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Apr 8, 2012
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Being relatively new to vaping, you weren't aware that using a mechanical mod with a rebuildable atomizer using the wrong batteries could end up like this:

IMR_battery_post-venting.jpgbattery_fire.jpgbattery_failure.jpgTrustfire2.jpg

You've jumped into the deep end of the pool before learning how to swim. Take a few steps back and learn what you should be doing before jumping blindly into the unknown. Sub-ohming is for advanced vapers; this is not cigalike or ego battery territory.

There's a lot for you to learn. Here is a good place to set down and learn about battery safety, mechanical mods, and rebuildable atomizers:

http://www.e-cigarette-forum.com/fo...chargers-multi-meters-forum.html#post12698746

http://www.e-cigarette-forum.com/fo...-discussion-safety-battery-info-warnings.html
 
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*deleon517*

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Hahahah, forsure! I've actually been rebuilding my protank 2 coils and even a few iClear 30 coils for a while now.. That's why I thought I could handle a RBA. But yeah, I'll get some more stuff and definitely be reading some more things on this forum daily. Glad to be a part here, I hope I can help some newcomers on the forum pretty soon aswell.

EDIT- I did not actually plan on buying the mini 18350 batteries, but the mod I have is basically a telescope and the closest shop to me didn't have any of the bigger sizes.. So I just bought it. But I'm definitely learning more and will not make silly mistakes like this again.

Being a telescope you could have rebuilt it to around 1ohm or higher and used just a single 18350 battery. I know I do when out somewhere that I want to be more discreet about it. Like the wife's family event's and bar hopping.
 

RebelGolfer72

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Apr 28, 2010
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First, I'm going to save the lecture about how this type of thing that will ruin it for all of us, because ultimately, your safety here is the most important thing. You already know this was not safe, learned your lesson, manned up, admitted it, and are asking for help. Glad to see it!
Sub-ohm builds are cool, and can hit like nothing else. I will say, though, a well-built single, micro-coil at 2 ohms, on a regulated mod can put out more vapor than you can imagine...especially if the RDA has the right air flow. An RDA is great to learn the rebuilding thing on...easy to fix if you wick wrong and so on.
My personal recommendation, would be to pick up a regulated mod...even a cheaper one, It will give you the ohm meter function, and will give you the protection for WHEN (not IF) you short a coil. You have an RDA, hopefully with adjustable air flow. If not, holes can always be drilled out or plugged. Grab some 30awg kanthal, some organic cotton, and learn there. Once you master that then try dual coil. Or heavier kanthal and start gradually lowering the resistance.
 
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