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newbie question about parallel vs series mods

Discussion in 'General Vaping Discussion' started by Walter_Sobchak, Oct 12, 2017.

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  1. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

    Supporting member
    Sep 30, 2017
    Indiana
    Ok, so I'm trying to get educated on mechs before I get one and do something stupid. I've been building for a few months and have a basic understanding of ohms law and basic battery safety. I've decided that I want my first mech to be a squonk (at least I think that's what I've decided). I'm waiting for the Driptech from 528 customs to launch and it runs on two parallel 18650s and that's where my questions start.

    Parallel is still 4.2 volts right? Also, with it running in parallel does that mean that the Amps double and allow for builds with lower resistance? Example: If I have a 0.2 build on a mech with 4.2 volts (before drop) I would be at 21 amps. Right? So if I have a single 18650 20 amp battery I would be exceeding the rating? Would parallel 18650s double my allowable amps?

    Please forgive my ignorance when it comes to this. Before I started vaping 5 months ago I had heard of Ohms but that was about the extent of my knowledge. Being a finance guy didn't really prepare me for my new hobby.
     
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  2. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

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    May 30, 2017
    Tucson, AZ
    It's still 4.2 volts. To the best of my understanding, amps and mAh are doubled. It will still drain like a regular mech mod, but you'll have longer run time, as far as I understand it, but you'll still get the drop in output. I believe you can run lower resistance coils more safely in that fashion, though you still have to give yourself some room for errorz.

    I hope I've gotten this answer right! If not, I'm sure someone will be along to correct me....

    Anna
     
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  3. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

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    Sep 30, 2017
    Indiana
    Thanks Anna! Your explanation jives with most of the info I've read elsewhere but I am just trying to double check everything
     
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  4. Izan

    Izan Vaping Master ECF Veteran

    Jul 1, 2012
    Mallorca, Spain
    Hi mate, Welcome
    SAFER.jpg

    Cheers
    I
     
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  5. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

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    Sep 30, 2017
    Indiana
    So when they are parallel the allowable amps is doubled?
     
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  6. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

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    May 30, 2017
    Tucson, AZ
    Yes. That doesn't mean you HAVE to build way, way low, you can still reach dangerous areas if you are building with crazy low resistance. You just have more room to build in a safety margin and longer run-time if you don't go nutz with your resistance. For starting out on any kind of mech mod, I'd probably start on the higher side, just to get used to the whole thing.... You should be able to more closely approach a very low resistance coil, just you know, take it easy for a while and figure out how this whole deal works, would be my advice. If you are dying to go low, a two mech mod may be better. If you are intent on shredding the tires as you drive away, just be aware that two batteries venting is probably equally as unpleasant as one venting, only, you know, doubled. I can do that calculation fairly easily.... :) Best of luck, however!!!

    Anna
     
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  7. AzPlumber

    AzPlumber Vaping Master Verified Member ECF Veteran

    Aug 28, 2011
    Arizona
    If you exceed the amp rating of one battery it is imperative that both batteries share the load.
     
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  8. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

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    Sep 30, 2017
    Indiana
    Shredding tires is far from my goal! I'm just trying to make sure that I err waaaay to the side of caution. I am approaching mechs the same way I approached motorcycles when I got my first street bike. I am afraid enough to always be cautious and respectful of what they are capable of.
     
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  9. gofishtx

    gofishtx Vaping Master Verified Member ECF Veteran

    Jan 24, 2014
    Tomball Texas
    Walter, you should head on over to the Mech forum where they have tons of info for you. Glad you are asking before buying. Happy Vaping:vapor:
    Mech Mods
     
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  10. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

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    Sep 30, 2017
    Indiana
    Funny you should recommend that because I'm currently reading a thread over there by another mech newbie who is asking for advice. Many thanks. You and the other members have shown an amazing willingness to help a humble newbie like myself and it is much appreciated
     
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  11. classwife

    classwife Admin Admin Verified Member ECF Veteran

    Supporting member
    Moved you to General Vaping Discussion from Simple Solutions.

    Simple Solutions is to assist the Beginning Vaper with getting started :)
     
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  12. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

    Supporting member
    Sep 30, 2017
    Indiana
    Sorry for posting in the wrong place. Thank you
     
  13. VictorViper

    VictorViper Ultra Member ECF Veteran

    Jun 22, 2013
    Vancouver
    Walter, you've got the answer you were looking for, but I just wanted to pop in to mention that you are going to want to ensure you have a way to check voltage on your batteries. It will be important to periodically confirm that your batteries are draining and aging in tandem. Especially when you first get your mech and batteries (don't forget you need to marry a fresh pair), any time after you disassemble to clean, and periodically if you don't clean constantly.

    As mentioned, while the load is shared, it's generally wise to ensure your build won't exceed the CDR of a single cell just in case something happens.
     
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  14. MMW

    MMW Vaping Master ECF Veteran

    Oct 8, 2015
    NH
    Glad to see you popping up and asking questions sir!

    Currently, I only run Parallel fully mechanical boxes. I usually cycle out my batteries every 6-8 months.
    I use parallels because of the extended runtimes, I build with stainless/lower than cdr of 1 battery, and I like the form factor.

    Most of my coils are simple multistrand parallel builds.
     
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  15. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

    Supporting member
    Sep 30, 2017
    Indiana
    Thank you for the info. I plan on buying 2 new batteries when I finally get a mech. The two sets I have now for my Dripbox and Drag are sufficient for those regulated mods but they are getting a little age on them and I'd rather be safe than sorry. Will the reading from my digital charger work as a way way to check the voltage? It's an Efest LUC V4
    Thanks again for the info and the advice
     
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  16. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

    Supporting member
    Sep 30, 2017
    Indiana
    That's great to hear. I'm not planning on trying to build anything close to .1 or .2 I usually vape in single coil in the .4-.5 range and it's more than adequate for my needs.

    Thanks for the help
     
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  17. bwh79

    bwh79 Vaping Master Verified Member ECF Veteran

    Dec 11, 2014
    Oregon
    Series and parallel configurations both allow for higher watts, but the methods they use to achieve this are different.

    In a PARALLEL setup, the voltage stays the same (technically it will be the average of the two cells, but the two cells should be identical so the "average" voltage is the same as each one individually), and the amp load is distributed evenly across both batteries. Each one only "feels" half the load, so that means you can essentially drive the pair twice as hard as a single-battery setup. This allows you to build coils with less resistance, and achieve higher wattage that way.

    In a SERIES setup, the voltage is doubled (technically, they are added together but, again, since they should be identical to each other, adding them together is the same as doubling the value of either one), and the full amp load is "felt" by each cell individually. So while parallel allows you to build at lower resistances, series requires you to build higher. With double the voltage and double the resistance, the amp draw will stay the same (I = V/R ; doubling both V and R gives 2V/2R which is the same as V/R, which by definition = I) but twice the watts (if W = V*I, then doubling the V and keeping the same I as we've just demonstrated is the case, results in twice as big of a W value.)

    In short: parallel allows you to build lower; series requires you to build higher.
     
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  18. Walter_Sobchak

    Walter_Sobchak Ultra Member Verified Member ECF Veteran

    Supporting member
    Sep 30, 2017
    Indiana
    Great explanation! Many thanks for taking the time do share
     
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  19. VictorViper

    VictorViper Ultra Member ECF Veteran

    Jun 22, 2013
    Vancouver
    I'm not familiar with that charger, but assuming a digital readout of the voltage, that's more than sufficient, yeah. I just pop my batteries into my Coilmaster Tab to check voltage.
     
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