I'm thinkin' maybe we should try this again? . . . . and you kids should behave yourselves

[Bigflyrodder]

Talking heads - wearing out the mouse.

Rage against the machine - [bulls on parade] 'for a pocketful of shells'.

This is one of those 10% posts

T

Indeed...lol.

Such an angry song for a nice relaxing Sunday...guess mashing that F5 button has your blood up ;-).

 

[Bigflyrodder]

Those mods are all stunning!

Giving me parrot disorder..."ooh, look at that! Wait, look at that!"

 

[Vwls]

Hi Dibi-fam (waves). New run looks amazing, P

So question for the gear-experts.

With a dual 18650 mechanical, are you getting twice the voltage and watts (and hence twice the vapor), or do they combine for the same voltage, and you just get twice the amount of time before you have to charge the batts?

 

[pdib]

Dibi boy I'll be probably sleeping when you send the pm, so yeah ...

for those occupying seats on other side of planet. I can invoice in the morning and ship in the afternoon. Part of that process will be "filling out this form". (I already have a lot of this info.; but indulge me with a PM, and it'll speed things along.)

http://www.e-cigarette-forum.com/fo...b-library-tech-specs-info-2.html#post12160692

 

[supertrunker]

Depends if they are stacked one on top of the other or side by side.

Danger Will Robinson.

T

 

[pdib]

Hi Dibi-fam (waves). New run looks amazing, P

So question for the gear-experts.

With a dual 18650 mechanical, are you getting twice the voltage and watts (and hence twice the vapor), or do they combine for the same voltage, and you just get twice the amount of time before you have to charge the batts?

This is a key question. It might be pertinent to our folk when I get my prototype up and running.

dual battery mechs can be set up in two ways. Parallel or Series. You get opposite results, and if you don't mind which you have, you get a massive hard short


parallel: same voltage (nominal 3.7), double amperage (minus imbalanced battery compensation . . . so 75% of doubled amp rating . . .. vs the usual 80% of single), double the mAh (roughly, again balance)

series: double the voltage (nominal 7.4), single battery amp rating (minus compensation for imbalanced batteries), single battery mAh

 

[Vwls]

This is a key question. It might be pertinent to our folk when I get my prototype up and running.

dual battery mechs can be set up in two ways. Parallel or Series. You get opposite results, and if you don't mind which you have, you get a massive hard short

parallel: same voltage (nominal 3.7), double amperage (minus imbalanced battery compensation . . . so 75% of doubled amp rating . . .. vs the usual 80% of single), double the mAh (roughly, again balance)

series: double the voltage (nominal 7.4), single battery amp rating (minus compensation for imbalanced batteries), single battery mAh

So either way you are going to get something close to twice the vapor (more like one and two thirds the vapor), but the parallel set up will make the batteries last longer? Did I get that right?

 

[Kentastic]

Hi Dibi-fam (waves). New run looks amazing, P

So question for the gear-experts.

With a dual 18650 mechanical, are you getting twice the voltage and watts (and hence twice the vapor), or do they combine for the same voltage, and you just get twice the amount of time before you have to charge the batts?

With a dual box mod it depends on how they are wired, usually signified by how you are supposed to install the batteries. If they both go positive up, then likely if is a parallel box which means the same voltage (4.2) only longer run times. If you put the batteries in one positive up, one negative up, the batteries are in series which doubles the voltage (8.4), but the run time is the same (or even less) than a single 650. You are dealing with the same amount if power (they are both mech mods), but different ways if using that power, and you'll have to do different coil builds to take advantage of those differences.


Sent from my iPhone using Tapatalk

 

[Kentastic]

It's not as simple as more power = more vapor.


Sent from my iPhone using Tapatalk

 

[supertrunker]

The correct question to ask is what happens in each case, when one battery fails.

T

 

[SeaNap]

With a dual box mod it depends on how they are wired, usually signified by how you are supposed to install the batteries. If they both go positive up, then likely if is a parallel box which means the same voltage (4.2) only longer run times. If you put the batteries in one positive up, one negative up, the batteries are in series which doubles the voltage (8.4), but the run time is the same (or even less) than a single 650. You are dealing with the same amount if power (they are both mech mods), but different ways if using that power, and you'll have to do different coil builds to take advantage of those differences.


Sent from my iPhone using Tapatalk

I worked up a mech mod design that was dual battery and parallel/series selectable. I would love to see that design, and squeeze in bottom feeding it would be the perfect mech mod.


Sent from my iPad using Tapatalk

 

[Vwls]

With a dual box mod it depends on how they are wired, usually signified by how you are supposed to install the batteries. If they both go positive up, then likely if is a parallel box which means the same voltage (4.2) only longer run times. If you put the batteries in one positive up, one negative up, the batteries are in series which doubles the voltage (8.4), but the run time is the same (or even less) than a single 650. You are dealing with the same amount if power (they are both mech mods), but different ways if using that power, and you'll have to do different coil builds to take advantage of those differences.

So a 0.6 ohm single coil with max air flow won't perform well on both?

 

[ValHeli]

So either way you are going to get something close to twice the vapor (more like one and two thirds the vapor), but the parallel set up will make the batteries last longer? Did I get that right?

I get the same amount of vapor from my parallel mods. On parallels, yes it lasts longer. Think of it this way. Parallel : voltage is same, capacity doubled
Series: Voltage is doubled, capacity remains the same ( that's why it's important to have balanced batts)

 

[Alexander Mundy]

Hi Dibi-fam (waves). New run looks amazing, P

So question for the gear-experts.

With a dual 18650 mechanical, are you getting twice the voltage and watts (and hence twice the vapor), or do they combine for the same voltage, and you just get twice the amount of time before you have to charge the batts?

Just a note because this is important!
As mentioned, with a series box it needs a totally different coil set up.
Voltage is doubled in a series box, but given the same coil resistance as a parallel or single box wattage would be 4 times [P (Wattage) = E (Voltage)^2 / R (Resistance)] and Amperage would be doubled [I (Amperage) = E (Voltage) / R (Resistance)].

Edit: super-duper-trunker caught my typo

 

[Bigflyrodder]

So a 0.6 ohm single coil with max air flow won't perform well on both?

That coil would perform very differently on the two different set ups. With batteries in a series you would draw about 29watts, with batteries stacked you'd be pulling just over 90watts which is a major difference. If you do not have a way to control the watts/volts with a selection dial you are forced to control those levels with the build itself.

As stated earlier, it is not as simple as "twice the vapor".

 

[ValHeli]

So a 0.6 ohm single coil with max air flow won't perform well on both?

The build is subjective to your taste. I say try it to see if you like it. Personally, I got tired of sub ohm and went back to 1Ω - 1.2 Ω makes my batts last longer

 

[Alexander Mundy]

So a 0.6 ohm single coil with max air flow won't perform well on both?

.6 on a series box would be 117.6 Watts of dry hit! (Yes a few can build to that but.....)

Edit: Ninja'ed by Bigflyrodde

 

[supertrunker]

Just a note because this is important!
As mentioned, with a series box it needs a totally different coil set up.
Voltage is doubled in a series box, but given the same coil resistance as a parallel or single box wattage would be 4 times [P (Wattage) = E (Voltage)^2 X R (Resistance)] and Amperage would be doubled [I (Amperage) = E (Voltage) / R (Resistance)].

That chart shows p=v^2/R

T

 

[Vwls]

Yeah I'm not into blowing massive clouds... all the time. In fact like to build my smallest atties at 1 to 1.5 ohms and leave the air hole at stock 1mm (actually I open them to 1.4mm - I'm a bad girl lol)... and just savor the flavor of a juice now and then. Like sipping a fine wine with the perfect juice - you just really want to taste it. And then at least once a day, I want to pump up my watts and get some thick vapor. I typically accomplish this on a 50 watt regulated. Easy peasy.

But once in a while guys... I just want to rip a massive, ridiculous cloud. Hence the questions.

So yeah it would be nice to have a dual battery mod that gave you the choice between series or parallel to suit your mood. I guess I have to admit... I have 90watt days. What can I say.

 

[Bigflyrodder]

Know what you mean about the 90watt days...lol, that's why I have a Duke.

That being said people don't use variable wattage devices correctly. If you have a 50watt box mod, you should build an atty with something like a total of 2-3ohms. When you rock that build at say 35watts you will get a very comparable experience to a subohm build at very high wattage. The beauty of the high wattage boxes is that you can build higher coils which means you don't draw the wattage you would with a subohm and get great results.