Good bad or ok?

[TheJakeBailey]

whew. I don't know what your experience level is, and you could be far more experienced than me. If you were asking for the amperage chart, or some other information to check your own opinion that it IS safe, that would be one thing. If you are just asking if it is safe period, that puts the responsibility on us, and I would have to say no.

 

[K_Tech]

My question to you would be what are you measuring your resistance with, and how much do you trust that measurement? I've seen people talking about those little ohm readers being off by .2 - .3 ohms because of internal resistance - meaning that a measured 0.4 could be almost a dead short.

Now, I have one of those little ohm readers, and I've checked it against a calibrated $400 multimeter, and I check and double-check when I go sub-ohm.

I have those same batteries, and I've only dipped slightly below 0.5 ohms because I like to have a little breathing room for my battery.

Understand that the battery specifications are true for a random sampling of batteries. They don't have the time or the facilities to test the discharge curves of every single battery sold. I trust that every battery will perform close to it rated specifications, but still wouldn't push any battery at 90% of its ratings.

That's just me.

 

[ericm12121977]

I just want to say that I hope you find what you are looking for in your sub-ohm hunting. But Murphy's law is an adage or epigram that is typically stated as: Anything that can go wrong, will go wrong.

 

[Baditude]

To Symphony: I'm glad that you are willing to come here to learn and are asking questions about sub-ohm and battery safety. That's why we are here...to give information about what is safe.

However, you are jumping into the deep end of the pool without having learned how to swim yet. Sub-ohm coil building, mechanical mods, and battery safety is not rocket science, but there are basics one needs to know and understand completely before delving into that "deep end" or you could blow your face off. I can tell you are "new" to vaping because of the questions you have been asking.

Is it okay to subohm on a .18 ohm dual coil build on a sony vtc 4 30 a battery?

what would be the best protected battery for daul coil sub ohm building for my mech mod?

honestly i just think it is the battery. not strong enough cause it fires for 4-7 seconds then shuts off. and the auto shut off protection? its not that at all cause then i would have to turn on my device again. the device is on all times. ohms? idk . Multi meter? i have one laying around. but idk where its at. i followed some coil builds so i know its good. Im just not to sure on the battery.

As I pointed out earlier, 0.18 ohm is nearly a dead short, the most feared situation in vaping. Protected batteries are NOT used in sub-ohm vaping, only high drain batteries are - teach yourself about the different battery chemistries to know which ones best fit your application and are safe for that. Always KNOW your ohms by knowing how to properly measure them with a precise quality ohm meter. You can't assume because you watched someone on a video making a coil that you'll get the same results as them. Always measure your coils.

Please study the below links BEFORE you attempt to build any coils. Since you don't have a previous background in electricity or electronics, you have some basic information to learn before you should attempt using an RBA on a mechanical mod. THERE ARE NO SHORTCUTS for what you want to do.

Battery Basics for Mods: IMR or Protected?

Mechanical Mod Proper Useage Guide

Information Resources for Your First RBA

Deeper Understanding of Mod Batteries

 

[Symphony]

Murphy's Law: "If something CAN go wrong...it WILL!"
Symphony.....have you even TRIED using a coil with more resistance...say, .8 or even 1.0???
Not trying to be condescending or flippant...but vaping isn't like a limbo contest.....
"How low can you go" with vaping.....can spell BIG TROUBLE!! The "prize" for going too low COULD be a trip to the emergency room!!!
PLEASE!! STAY SAFE!!
happy (vaping) Trails!

I actually get a satifying vape at .24 which im at for the past 2 weeks. anything over .5 i rebuild automatically cause it dont feel my needs

 

[Baditude]

I actually get a satifying vape at .24 which im at for the past 2 weeks. anything over .5 i rebuild automatically cause it dont feel my needs

How would you know that you are actually at 0.24 ohms if you can't find your multimeter and haven't actually measured the coils? You can't follow what you see on a video and assume that your coils' resistance will be the same as the demonstrator. It doesn't work that way. You're playing with fire, son. Don't get burnt.

 

[xBlackRobx]

Not to .... in all late but I was just like OP for awhile. Then figured out through creative coil building and wicking that builds at higher resistances (in my case all of my subohm builds are now .4-.8) the clouds I can produce are just as big as my deathwish having friends' who are at .2 or lower. Just saying.

 

[Symphony]

How would you know that you are actually at 0.24 ohms if you can't find your multimeter and haven't actually measured the coils? You can't follow what you see on a video and assume that your coils' resistance will be the same as the demonstrator. It doesn't work that way. You're playing with fire, son. Don't get burnt.

I always carry my ohm meter with me and check it by the hour. Thats why i know its .24 ohm
and i havent ever seen the build i do on a video.

 

[Dandreid]

Twisted 26 centered micro coil 4 wraps. Sometimes it comes out to .14 which is 27 amps ? still ok?

In this case, 27 Amps is calculated at nominal voltage for the battery. At the full rated charge for the battery (4.25 Volts), this works out to 30.36 Amps ===> Unsafe, period. Even at a proper full charge of 4.2 Volts, you are at 100% capacity (30.00 Amps).

In theory, on a new battery, you could get away with it safely, but in practice, it is not safe. Running the battery at full tilt all the time, it will degrade. As the battery ages, there is a chance it will not be able to handle this kind of use. Yes, the manufacturer will sample the lot and has a safety margin built in, but they aren't going to test your particular battery through it's lifespan.

You need to decide what risks you want to take, but without your own safety factor built in to your builds, you put yourself at risk.

A note to new members, those new to building coils, or those newer to sub-ohm who are reading this thread:

What is being discussed in this thread is advanced and potentially very dangerous. DO NOT TRY THIS UNTIL YOU HAVE DONE THE APPROPRIATE RESEARCH TO STAY SAFE.