purge copper stacked dual 26650 competition mech mod

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jmc1980

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I recently purchased a purge copper 26650 competition mech mod. Tomorrow I will have a tube arriving to turn this mod into a dual stacked 26650 mod. What kind of build will I need to use on my tank to accommodate this dual battery setup? Is this a parallel or a series setup? Would I be lowering my ohms on my tank like I think I should do with a parallel battery build? Or would I be raising my ohms on my tank like I think I should do with a series battery build? Any advice would be appreciated. thank you, Jeff
 
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jmc1980

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I recently purchased a purge copper 26650 competition mech mod. Tomorrow I will have a tube arriving to turn this mod into a dual stacked 26650 mod. What kind of build will I need to use on my tank to accommodate a dual battery setup? Is this a parallel or a series setup? Would I be lowering my ohms on my tank like I think I should do with a parallel battery build? Or would I be raising my ohms on my tank like I think I should do with a series battery build? Any advice would be appreciated. thank you, Jeff
 

Shawn Hoefer

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For starters, if you do not know what you're ordering, you have no business ordering it. I really, really, really encourage people to research BEFORE buying.

There, now that that's out of my system, you have a series mod with the potential for very bad things to happen if you do not know your Ohm's law and battery safety and what battery you're using.

As a general rule of thumb, do not drop below a 0.4Ω build with a lot of mass.
 

denali_41

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oh brother here we go again ! i really wish i had the video of that idiot over in the uk somewhere that did the the same thing you are getting ready to do [smmfh here] one of his 26650's exploded into the ceiling ,and he was i guess i have to clean that up and went about his stupidity ,do you really want me or somebody else to say the same thing about you in a few weeks ??
learn this before stacking those batteries !!!!!!!!!!!!!!! :

what is the amp draw of those stacked batteries
what can those batteries handle for amp draw
what is parallel as opposed to series
what is ohms law
 

jmc1980

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I have been building on and using mech mods for 5+ years. I am very aware of ohms law and safe builds for all my mech mod builds and use 30 amp Ijoy and 31 amp golisi 26650 batteries. I also check new builds on 3 different ohm meters. I do use 2 different 26650 series box mods (batteries are lined up side by side and opposite polarity) and I build on several lipo box mods each with 4 cell batteries and I build safely on all 4 of these multiple series mods also. I am aware to go up on my ohms quite a bit with series mods. HOWEVER, coming back now to my original post and to ask ONE question about stacked mech mods, are they parallel or series? I feel like I am very knowledgeable about all things e-cig related with all of my years of rda building on mech mods and the only question that I have is about these stacked mech mods since I never had one before. I want the people here at e-cigarette-forum to rest assured that I'm not some novice who is going to have a catastrophic failure of my mod, I just wanted some knowledge/information of my new "stacked" mod to keep it that way. I hope this makes sense, P.S. the mail just came and so did the tube extension. thanks again, Jeff
 
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jmc1980

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Stacked batteries means they are in series. Be aware your amp draw should not exceed the CDR of a single one of your stacked batts. Lets say you have 2x10A batteries. DO NOT BUILD FOR 20A!! That's not how it works. Build for 8.4V @10A. Please be safe. Good luck.
Thanks for the advise. I just got through building a .4 ohm dual clapton coil build with 2 stacked 30 amp 26650 Ijoy batteries. This build is plenty safe and hits like a freight train! It is the biggest hitting mod I own and I own ALOT of them!!! Even bigger than my 4 cell lipos. Thanks again, Jeff
 
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jmc1980

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I'm glad you got the information that you needed. However you did ask in your OP what build to use, and that implies lack of basic understanding. Clearly a misunderstanding as you are very knowledgeable about all things e-cig related.
This "stacked" dual battery mech mod is not my first multiple battery mod but it is my first DUAL battery style MECH MOD. I do own many box mods and lipo battery mods. The series box mods I own have batteries that are reversed to each other and parallel mods with batteries that all go in the same direction. I thought since the batteries go in the same direction to each other in this mech mod it would be a parallel build. I am very happy with the information I received here before trying to use it!!! Of course I would never use something I am not 100% sure about first. thanks again for the help, Jeff p.s. I am IN LOVE with this new mech mod, with 26650 joy's and a .43ohm build I think it puts out more clouds than even my 17.4v 4 cell lipos.
 

sonicbomb

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does anyone know what is the lowest ohm build for a 26650 dual series mech mod with 2 30 amp ijoy batteries? I am not going to build THAT LOW!!! I just want a little info on how low I can go so I can build with more "education". thanks, Jeff
With series the voltages are additive but the CDR remains the same.
So based on 8.4 volts (theoretical, it will be less in reality due to voltage drop) with a 0.28 ohm coil pulls 30 amps and produces 252 watts.
Running batteries close to or on their CDR may cause accelerated ageing, also the CDR of a battery with decrease as the battery ages. It's also wise to leave some spare headroom creates a safety margin, some people recommend 50%.
It's like red-lining your car in every gear, sooner or later you are going to damage the engine. Just because the rev counter goes to 9000 rpm does not mean it is recommended to do so.

Battery drain | Steam Engine | free vaping calculators
 
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jmc1980

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Do you use steamengine at all? There are some good online calculators out there, but none are perfect, I think of them more of a guideline, but some will tell you amp draw with builds.
I have been using steamengine for years. I do only use it as a guideline. I have used it with so many configurations that I have more or less memorized my favorite builds with certain gauges and wraps for certain ohms. However, it has some limitations. There is no nichrome 90. Also, for those of you who know of it, no sweetspot ti-x (not temp control titanium wire). The ti-x is really only meant for .3-.6 ohm builds (high powered/multiple battery/series devices). Built correctly it can very easily prove to give amazing results. Jeff
 
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jmc1980

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No offence, but for someone with over 5 years of use you shouldn’t have to ask such questions. If you have used series box mods, then surely logic tells you that a stacked mod is series as well? Think of the circuit, not the physical position of the cells.
I have dual battery box mods in series and in parallel. My series mods have batteries side by side in opposite directions and my parallel mods have batteries side by side in the same direction. That is why I thought the stacked mech was parallel, the 2 batteries were going in the same direction. I own many mech mods but all have had just 1 battery. My new stacked mech mod has batteries in the same direction, just like the batteries in the same direction in my parallel box mod. My series box has double the voltage and that's it. The parallel box has twice the mah and 1.5 times the amps. Series builds require much higher ohm builds and parallel builds require much lower ohm builds. I hope this explains my thought process. Jeff
 
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GamblerMagic

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Stacked tubes are in series, so double the voltage not split the current across the batteries. Which means you can do some pretty hot vapes at 200+ watts depending on batteries. I used to vape .3 ohm builds on my stacked mod, which is 28 amps at 235 watts (maybe closer than some would do). I used LG HG6's though, a true 30amp battery.

This app (android): https://play.google.com/store/apps/details?id=com.stasbar.vape_tool&hl=en_US
It has Ni90 to help out there. There is a PRO version that lets you save coil 'recipes' and open up some additional features like custom wire types and such.

I had a Oden 25 stacked, most of the time I used it in single mode. Remove the bottom tube and screw the button in to use one battery instead of two.
 
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