Question about regulated parallel and series.

Status
Not open for further replies.

Anthony_Vapes

Ultra Member
ECF Veteran
Verified Member
Jan 23, 2017
1,596
2,350
I'm planning to buy an ijoy Zenith mod which runs on 3 18650s. Since this mod has a knob to adjust the voltage for up to 6ish volts. Does that mean that it's a series mod? And if so. Should I calculate my resistance the same way that i do with my unregulated single 18650 mod? (Sorry I'm new to vaping so)
It's a regulated mod but you should still use good batteries and stay safe. It is capable of 300 watts. Regulated mods don't calculate amp draw from the batteries like unregulated do. I made a video explaining the difference here

I have a review of the zenith as well if you wanted more info on it

Sent from my SM-G935V using Tapatalk
 
  • Like
Reactions: Darth Vaper D

Imfallen_Angel

Ultra Member
ECF Veteran
Apr 10, 2016
1,711
2,763
Ottawa area, Canada
What do you prefer vv series or vv parallel, and why?

Trouble is, there's virtually no parallel reg. mods. I have the Eleaf TC100W (and quite a few of them) and I absolutely love them, it's as close to perfect as I've yet to see. I also have the Lost Vape Therion 75 but it's been a pain to use.

Half right
Series doubles voltage
Parallel gives you 50-60% more amp limit then series (as a safe value)
Both give you the same battery life

Between my TC100W and my Smok Xcube2 (which is in series) there's no question about it, I'm finding that the parallel has a HUGE difference in battery life (at least 30% longer). Could just be the way the board of these particular mods are, but I'll see if there's a difference with my Predators (that are series) that should be arriving soon.

It's a question that within a few uses, the Xcube shows the battery down a third down already and just casual usage and it's dead crazy fast while the TC100W, I can easily use from 7am to 9-10 pm (and that's with about 4-5 tank refills)

Yeah but if you use vv then what's the point of series anyway? It doesn't even matter.

More wattage... but it you stay under the limits of a parallel, it won't matter.. my usual range is 40 to 70W, so I don't even come close to the limits on my mods (well, the Therion is stuck at 75W, while my TC100W can go up to 120W)

Sigelie 150 is series. Parallel mods have the same limit as single battery mods

Which are?
 

Anthony_Vapes

Ultra Member
ECF Veteran
Verified Member
Jan 23, 2017
1,596
2,350
Trouble is, there's virtually no parallel reg. mods. I have the Eleaf TC100W (and quite a few of them) and I absolutely love them, it's as close to perfect as I've yet to see. I also have the Lost Vape Therion 75 but it's been a pain to use.



Between my TC100W and my Smok Xcube2 (which is in series) there's no question about it, I'm finding that the parallel has a HUGE difference in battery life (at least 30% longer). Could just be the way the board of these particular mods are, but I'll see if there's a difference with my Predators (that are series) that should be arriving soon.

It's a question that within a few uses, the Xcube shows the battery down a third down already and just casual usage and it's dead crazy fast while the TC100W, I can easily use from 7am to 9-10 pm (and that's with about 4-5 tank refills)



More wattage... but it you stay under the limits of a parallel, it won't matter.. my usual range is 40 to 70W, so I don't even come close to the limits on my mods (well, the Therion is stuck at 75W, while my TC100W can go up to 120W)



Which are?
battery life is going to be the same in series an parallel. the chip can make a difference (more efficient chip means better battery life) but battery life is in kw/hr
so for 3000mah batteries
nominal voltage times mah divided by 1000 (to turn watts into kilowatts)
parallel = 3.7*6000/1000=22.2
series = 7.4*3000/1000=22.2
 

Imfallen_Angel

Ultra Member
ECF Veteran
Apr 10, 2016
1,711
2,763
Ottawa area, Canada
battery life is going to be the same in series an parallel. the chip can make a difference (more efficient chip means better battery life) but battery life is in kw/hr
so for 3000mah batteries
nominal voltage times mah divided by 1000 (to turn watts into kilowatts)
parallel = 3.7*6000/1000=22.2
series = 7.4*3000/1000=22.2
I know on paper it's a given..

But what's missing here in this equation is the pull on the battery at the chemical level....the harder you pull the battery, the more it has an impact on it...and in parallel, this is split between them so it's less harsh, while in series it passes through both. Of course, the level of pull will make a difference, but still...

But the board does make a really huge difference also how it registers the batteries' charge. Between my TC100W and my Therion, the Therion will show the battery being much lower faster, then "stabilizes" for a little while... but then goes down again... and for the few times I've used it, I have seen a noticeable difference, and the TC100W wins out again, even with the Therion with new batteries, it lasts a lot less longer than the TC100W. (DNA lovers be damned, I'm just not impressed by this board at all).
 

Anthony_Vapes

Ultra Member
ECF Veteran
Verified Member
Jan 23, 2017
1,596
2,350
I know on paper it's a given..

But what's missing here in this equation is the pull on the battery at the chemical level....the harder you pull the battery, the more it has an impact on it...and in parallel, this is split between them so it's less harsh, while in series it passes through both. Of course, the level of pull will make a difference, but still...

But the board does make a really huge difference also how it registers the batteries' charge. Between my TC100W and my Therion, the Therion will show the battery being much lower faster, then "stabilizes" for a little while... but then goes down again... and for the few times I've used it, I have seen a noticeable difference, and the TC100W wins out again, even with the Therion with new batteries, it lasts a lot less longer than the TC100W. (DNA lovers be damned, I'm just not impressed by this board at all).
it's the same in a sense. in series the batteries act as 1 cell of 7.4 volts (nominal at full charge 8.4 volts) in parallel they act as separate cells sharing the load. in both cases the load will never be shared equally, one will always drain different no matter what (which is why balanced charging is so important) as far as the therion goes it depends on the cutoff of the mod. the therion you can change the cut off. 2.5 is the dead minimum. many people set theirs between 2.8 and 3.2 personally i set mine at 3. you can also add in the battery capacity (in kw/h) for your battery profile. in the case of the TC100 you can't. it's whatever eleaf programmed into the firmware. the DNA chip reads it live so when you take a puff the meter will drop and then when your done it'll rise back up to it's charge level. when you drop a load on the batteries the voltage drops as well (voltage sag) the eleaf won't record that or show that. also which therion are you using? if it's the 75 version then yeah the DNA75 chip isn't that good. it's the DNA200 and DNA250 that are really good.
 

rozdad06

Full Member
Jun 22, 2013
8
5
45
huntington tx
Hey everyone. I got a noisy cricket2 coming in the mail and was wondering what the point of an unregulated series would be if I have a regulated parallel box mod that can go over the direct output of the unregulated series? Are there anyway benefits from using this unregulated series? I know the battery life is cut in half and my amps stay around 20 in series. What do you think? I'm also aware that noisy cricket has regulated series. What's the benefit of having vv in series rather than in parallel?

Aside from the obvious features like regulated mods have safety features. I'm talking about benefits in vaping experience, not features.
Wow!
 

Imfallen_Angel

Ultra Member
ECF Veteran
Apr 10, 2016
1,711
2,763
Ottawa area, Canada
it's the same in a sense. in series the batteries act as 1 cell of 7.4 volts (nominal at full charge 8.4 volts) in parallel they act as separate cells sharing the load. in both cases the load will never be shared equally, one will always drain different no matter what (which is why balanced charging is so important) as far as the therion goes it depends on the cutoff of the mod. the therion you can change the cut off. 2.5 is the dead minimum. many people set theirs between 2.8 and 3.2 personally i set mine at 3. you can also add in the battery capacity (in kw/h) for your battery profile. in the case of the TC100 you can't. it's whatever eleaf programmed into the firmware. the DNA chip reads it live so when you take a puff the meter will drop and then when your done it'll rise back up to it's charge level. when you drop a load on the batteries the voltage drops as well (voltage sag) the eleaf won't record that or show that. also which therion are you using? if it's the 75 version then yeah the DNA75 chip isn't that good. it's the DNA200 and DNA250 that are really good.

Just checked to confirm and I found stated as the cut-off being 3.3V for the TC100W.

So, if I were able to adjust it, dang... even longer life per day... but then, the more you drain a battery the shorter the lifespan anyways...

Yes, as I stated above for my Therion, it's the 75 (the only parallel one).
 
  • Like
Reactions: Anthony_Vapes

Anthony_Vapes

Ultra Member
ECF Veteran
Verified Member
Jan 23, 2017
1,596
2,350
Just checked to confirm and I found stated as the cut-off being 3.3V for the TC100W.

So, if I were able to adjust it, dang... even longer life per day... but then, the more you drain a battery the shorter the lifespan anyways...

Yes, as I stated above for my Therion, it's the 75 (the only parallel one).
gotcha, in that case the DNA75 chip (which is the one in the therion 75) is known for poor battery life due to it's low efficiency. it wouldn't surprise me of the TC100w has better battery life.
 

Imfallen_Angel

Ultra Member
ECF Veteran
Apr 10, 2016
1,711
2,763
Ottawa area, Canada
gotcha, in that case the DNA75 chip (which is the one in the therion 75) is known for poor battery life due to it's low efficiency. it wouldn't surprise me of the TC100w has better battery life.
What i find funny is that I can't find anything about any other DNA boards that can do parallel.. you'd think that DNA boards being so "advanced" that it would be a case of a selection when building a mod to switch between either and hence adjust the parameters, but it appears that it's only the 75 that does it, and even then, limited to the Lost Vape Therion mods.
 

Anthony_Vapes

Ultra Member
ECF Veteran
Verified Member
Jan 23, 2017
1,596
2,350
What i find funny is that I can't find anything about any other DNA boards that can do parallel.. you'd think that DNA boards being so "advanced" that it would be a case of a selection when building a mod to switch between either and hence adjust the parameters, but it appears that it's only the 75 that does it, and even then, limited to the Lost Vape Therion mods.
depends on the chip. the dna75 and lower (60,40,30 etc) can all be wired parallel. it's up to the mod makers to decide how to configure it. You could build your own DNA75 if you wanted with 4 batteries in parallel. the only thing the chip really cares about is input voltage. the DNA200/250 are set up for input voltages of dual or triple batts (or lipos) but with dual batts the max wattage drops. It's possible they could configure the chip with different batt set ups. i'm not 100% sure how flexible the DNA is but i know it's pretty flexible. you can take a DNA250 chip and wire it for 6 batteries if you wanted. 2 sets of 3 running in parallel and it'll work. me and some friends are working on a custom FSK mod and i've had talks with hohmtech and as long as the input voltage doesn't change you can wire in any battery type or combo of batts, one of their employees made a quad battery mod (series parallel) out of the FSK chip with a custom enclosure. the one we are working on is a dual 26650 flask FSK mod.
 

Darth Vaper D

New Member
Apr 20, 2017
2
1
32
It's a regulated mod but you should still use good batteries and stay safe. It is capable of 300 watts. Regulated mods don't calculate amp draw from the batteries like unregulated do. I made a video explaining the difference here

I have a review of the zenith as well if you wanted more info on it

Sent from my SM-G935V using Tapatalk

Thanks man!
 
  • Like
Reactions: Anthony_Vapes

David Wolf

Moved On
ECF Veteran
Dec 11, 2014
2,847
6,780
Charlotte, NC
Thank you for the clarification.
Psss ... you were right, two parallel batteries does double the mah (milli-amp hours, a general measure of battery capacity battery manufacturers use) over a single battery. And for a more accurate measurement of battery capacity Watt-hours or kWh (1000 Watt-hours) is used, not kW/h. And two batteries in series have the same mah as two batteries in parallel. The difference in battery life depends on what voltage and coil resistance, or power, you vape at. Two batteries in series provides twice the voltage as two in parallel as you stated.
 
Last edited:
  • Like
Reactions: Anthony_Vapes

2GLR

Super Member
ECF Veteran
Verified Member
May 1, 2012
319
336
Cedar Rapids
Half right
Series doubles voltage
Parallel gives you 50-60% more amp limit then series (as a safe value)
Both give you the same battery life

battery life is calculated in KW/H not MAH (formula is nominal voltage*mah/1000=Kw/h)
so series (assuming samsung 30q battery which is 20 amps 3000mah)
7.4 volts * 3000mah / 1000 = 22.2kw/h 20 amp limit

Parallel
3.7 volts * 6000mah / 1000 = 22.2kw/h 30 amp limit

I think you mean W-h not kw-h.
 

sonicbomb

Vaping Master
ECF Veteran
Verified Member
Feb 17, 2015
8,362
23,817
1187 Hundertwasser
I know that in regulated mods series is slightly more efficient due to buck/boost. But I was also under the impression that in general unregulated series mods are more efficient than parallel wired systems. The reason being that parallel (with it's large amp pool) suits very low resistance coils and very high amp draws, the higher the current is the greater the voltage drop in the circuit is (exponentially). So by using a series mod with a large voltage pool, relatively higher resistance coils and smaller amounts of required current, the amount of power lost to the system itself was lower.
 

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,645
Central GA
I've done the math as far as published specs allow to try and project battery life on my mods. I've been a electronics tech type by profession all my life. For the most part, I can tell you that no matter what mod I try, with new batteries I can start vaping first thing in the morning and some time in the afternoon I'll be replacing batteries! It may be an hour or two longer with a 3000mah battery over a 2000mah battery, but the mod and my vaping style kills a battery in a day or less...

Couldn't resist injecting a little levity. ;)

Still, I consider Mooch's battery tests and pick and choose a battery the highest MAH/CDR rating possible. Parallel or series, the battery is drained of power on a decreasing curve. I do see additional battery life using TC mode, though. That's due to pulsing the battery to maintain temperature as opposed to firing in power mode at a stable voltage.

Mooch's Recommended
 
Status
Not open for further replies.

Users who are viewing this thread