Series & Parallel

I currently have a series box mod but was looking into getting a parallel. I'm looking for something that's either simple and clean looking or unique design and clean. However both to be good in performance? Or is every parallel box mod the same?  

An online vape shop here at Greece at the description for dotBox Dual Mech mod says"

"Switch to Parallel Mode for longer Vaping time and exceptional power from two 18650 batteries".

The dotbox dual mech has the option to select series or parallel connection via a switch.
I send them a email that this doesn't apply (for the same power output always),for example 0.1 ohm coil in parallel connection and 0.4 ohm coil in series connection.

Two batteries in series provide the same amount of watt hours a parallel connection does.

The vapeshop replied and told me that the description is copy and paste from Dotmod.com

Indeed.
QUOTE from dotBox Dual Mech - dotmodretail
"Last Longer. Switch to Parallel Mode for longer Vaping time and exceptional power from two 18650 batteries".

The vape shop also said that the voltage sag at parallel connection is spread out over the two batteries in Parallel.Thus more vaping time than using a series connection.

Okey I made the calculations for voltage sag using for example two Sony VTC5A 18650 batteries with a DC Internal Resistance = 18.6mOhms (0.018 ohm).

I got the same voltage sag 0.378 V in both configurations (0.1 build in parallel-0.4 build in series).

Am i correct or am I missing something?(i'll send to the vape shop the link for this thread so they can read your opinions because i think they believe i'm talking bulls..t!  

So I've recently gotten back into using mods. This is my first regulated mod. I was using mechs back in the day. Looking back, I had no real understanding of how they worked, but I was building simple 6 wraps on whatever gage so I never had a problem. I now have a regulated 200w mod and understand how to come up with the voltage and amperage being they are generally in series form. But what do the voltage and amp draw on my scree mean. Of what purpose is it. They don't tell me the current voltage of my batteries or what amps are being pulled from them.  

so in my pursuit of vaping above 200 Watts I made a fuse 3x24ga gauge wrapped with 36 gauge and I tried three coils. it came out .07 I Vaped it at about 375 watts it was a hot vape but the ohms were very low so I had a problem with power my DNA 250c was reporting 65 amp output so I took that and put in dual fuse 22ga gauge wrapped with 36 gauge I ran that build triple coil I used it at about 250 Watts. what I am trying to do is vape at about 300 to 400 watts with an ohm or .2 to .3. the inner diameter will be 5.5 or 5 mm I'll be using the kanthal core wrapped with 36 gauge and ni80.I'm trying to figure out what my next bill should be to try to vape above 300 watts the restrictions I have is it can't be below point 1 ohm or above .3 ohm I have two aromamizer plus has with the series deck The parallel deck a second parallel deck and a single coil deck. The single coil deck fit 6.36 mm.

I also have the aromamizer titan.

What gauge would you Clapton?

Sent from my HD1907 using Tapatalk  

Has anyone ever heard of or used one? I'm looking at a 26650 parallel box mod. Any other recommendations for a 26650 box mod that don't cost a fortune?

Dual 26650 Box Mods & More - Lifetime Warranty | Dual 26650 Box Mod *Parallel*  

I've always wondered whats better for efficiency. In a regulated mod I can't imagine it really makes a difference in vape performance, I'm currently keeping my builds at a lower resistance by winding parallel coils. My goto build comes to about 0.4ohms and I run it in the range of 28-38w, usually set at 32w, if I wound it in series it would be around 1.6ohm which would need about 7v to get to 30w and at my Aegis solos max voltage of 8v would provide 40w. The only issue with this is that it limits the wattage range you can run at, since I sometimes do crank this build upto 42w, although it does start to burn above 45w.

The one advantage of running at a high voltage and a lower current is that theoretically there should be less energy loss in the transmission of power to the coils (like in the pin, the posts and the wiring connecting the 510), although depending on the construction of the mod/tank it may not be significant enough to provide any benifit. I can imagine that it's not that simple either as the mod is having to boost the voltage more which may cause the voltage conversion efficiency to suffer. Although in my dual cell mod it may be benificial since the input voltage is around 6.4-8.4v, although I tend to use this for my higher wattage builds.

This may just be me because I'm obsessed about how much voltage is dropped across cables, I always use the high quality wiring and keep it as short as possible because it is actually quite surprising how much energy you can loose through a cheap cable. Even good quality wire at higher amps can drop a significant amount of power.  

Wismec 3 Battery? No good. Breaks within a year without dropping. Replicated on two mods.

Wismec 2/3 mod? Yet again, poor manufacturing. Wires not soldered properly. Almost lasted a year.

Squid Industries Double-Barrel? Craps out after 1 month without any damage. Wont turn on.

GeekVape Aegis Legend? 2 months and not reading the batteries right. Never so much as tipped over on my desk.

SMOK? Had more than I can count or bother to recall the exact models, but every one busted within a year.

None of them seem true to their warranties either. They make it as tedious a process as possible. I haven't tried with the Aegis Legend yet, but I'm going to go out on a limb here and say it's probably more of the same.

At this point, I am convinced that I have spent more money on mods than I have on juice. These mods are all made like crap. I don't want to spend $80 every few months to get a new mod. I just want to vape for gods sake.

Has anyone had a mod that has lasted them over a year? What kind was it? I've asked this before and that's what led me to the Double-Barrel and the Aegis Legend. Both have failed on me even sooner than my previous attempts.  

How can this work? Lets say your regulated mod shuts down due to low battery. No problem they say it has passthru function so you hook up your usb cable to a 1 amp wall wart and continue to vape at 30 watts or so?
I consider the passthru statements on those mods to be crapola.  

Wondering if its necessary to get brand new batteries for your new series box? I have some VTC 4s and i used them but not much.. i was planning on using those on it. Good idea? And if someone could name me some cons of the series circuit?  

When calculating builds on Steam Engine for parallel builds, is the wrap count the total of wraps counting each strand, or total wraps for the unit of strands?

Example: I want build X using 2 parallel strands of 28g Kanthal, and for my given resistance, SE says use 14 wraps. Is that 7 wraps with parallel wires, or 14 wraps counting the parallel wires as a single wire?

Thanks in advance, guys. I'm trying to experiment with some creative builds and I want to waste as little wire as I can on missed resistance.