minimal coil resistance for single and dual cell APV

Hi

I am kinda not so sure about all this yet. I know about existence of Steam Engine and the principle of regulated device battery drain, but it is still very confusing to me.
So I am trying to be simple and safe here.
My questions.
Considering LG6 and VTC5a, single cell and dual cell APV, can I use 0.1 ohm or 0.2 ohm premade SS coils at all? Even with low wattage? I am already purchased them without thinking first, I know, I am screwed.
If yes, what is the wattage higher limit for
1. 0.1 ohm single cell APV
2. 0.1ohm dual cell APV
3. 0.2 ohm single cell APV
4. 0.2 ohm dual cell APV
I don't mind using lower wattage, I just don't want to throw away those coils.
I understand that LG6 would be better for those coils, than VTC5a - I did not get all batteries I want yet, so I can get more LG5 for this purpose....

I am trying to get though all those rules, but it is moving rather very slow.

Appreciate any help and suggestions.

kisianik said:

Hi

I am kinda not so sure about all this yet. I know about existence of Steam Engine and the principle of regulated device battery drain, but it is still very confusing to me.
So I am trying to be simple and safe here.
My questions.
Considering LG6 and VTC5a, single cell and dual cell APV, can I use 0.1 ohm or 0.2 ohm premade SS coils at all? Even with low wattage? I am already purchased them without thinking first, I know, I am screwed.
If yes, what is the wattage higher limit for
1. 0.1 ohm single cell APV
2. 0.1ohm dual cell APV
3. 0.2 ohm single cell APV
4. 0.2 ohm dual cell APV
I don't mind using lower wattage, I just don't want to throw away those coils.
I understand that LG6 would be better for those coils, than VTC5a - I did not get all batteries I want yet, so I can get more LG5 for this purpose....

I am trying to get though all those rules, but it is moving rather very slow.

Appreciate any help and suggestions.

Click to expand...

There are two seperately different animals with APV (Mods), one being Mechanical/Unregulated, then you have regulated, and both have opposite ways of how they pull amps. Mechanical/Unregulated "Full Charge Voltage divided Resistance (Ohms) equals maximum amps". Regulated mods its based off "Watts Set divided by Lowest Available Voltage equals Rough Amps, Rough Amps divided Mod Control Board Efficiency equals final Maximum Amps". Single Cell Mods the voltage can be figured real easily as safe operating voltages are between 2.5v lowest to 4.2v fresh charge per battery, with multi-battery mods there are two basic types, "Series Battery Configuration" which is Voltage X Number of batteries, MaH and CDR of a single battery, and "Parallel Battery Configuration" which gives Voltage of single battery, MaH X Number of Batteries, CDR X Number of Batteries (the CDR in theory should be this with a Parallel mod, but we suggest for Safety Battery 1=100% CDR, Battery 2=+50% Extra CDR, Battery 3=+50% Extra CDR, etc.). Remember also with a regulated mod, the Ohms only come into play with 2 criteria, the control board reads the Ohms, figures if the Ohms are within its programmed operating range, generally between 0.1ohm and 3.0ohm on most regulated mods, then if the Ohms are in that range, using the watts set, adjusts the voltage to reach those set watts, after that, the Ohms play no difference on a regulated mod.

Formula Examples:
Mech/Unregulated
4.2v Fresh Charge/1.0ohms=4.2amps
4.2v Fresh Charge/0.5ohms=8.4amps
8.4v Fresh Charge/1.0ohms=8.4amps (Series notice the 4.2vX2=8.4v)
The LG HB6 1500mah 30amp CDR battery in Parallel Mech
4.2v Fresh Charge/0.14ohms=30amps (About 15amps Per Battery)
4.2v Fresh Charge/0.095ohms=44.2105amps (30amps Battery 1 + 15amps Battery 2)

Regulated Mod Single Battery
60watts/3.2v lowest charge before the mod shuts down=18.75amps/0.9 (or 90% Control Board Efficiency)=20.8333 Maximum Amps
Regulated Mod Dual Battery Series
120watts/6.4v lowest charge (or 3.2v per battery)=18.75amps/0.9=20.8333amps

So a rough guideline with a regulated mod is such
20amp Battery = 60watts max per battery, (Series Mods which most multi-battery mods are), Dual Battery 120watts max (60watts X 2 batteries), triple battery 180 watts (60watts X 3 batteries)
25amp Battery = 75watts max per battery
30amp Battery = 90watts max per battery

A good link to add to your vape arsenal for figuring amp pull on a regulated mod is here
https://liionwholesale.com/pages/regulated-mod-calculator

IMFire3605 said:

Regulated Mod Single Battery
60watts/3.2v lowest charge before the mod shuts down=18.75amps/0.9 (or 90% Control Board Efficiency)=20.8333 Maximum Amps
Regulated Mod Dual Battery Series
120watts/6.4v lowest charge (or 3.2v per battery)=18.75amps/0.9=20.8333amps

So a rough guideline with a regulated mod is such
20amp Battery = 60watts max per battery, (Series Mods which most multi-battery mods are), Dual Battery 120watts max (60watts X 2 batteries), triple battery 180 watts (60watts X 3 batteries)
25amp Battery = 75watts max per battery
30amp Battery = 90watts max per battery

A good link to add to your vape arsenal for figuring amp pull on a regulated mod is here
https://liionwholesale.com/pages/regulated-mod-calculator

Click to expand...

Thanks for a quick reply
I hope you did not just type all this. My fault. I have only regulated devices.
I do understand battery drain principles and I have all those calculators and know how to use them, those ones are simple.and it was not my issue.

My problem is the coil's resistance correlation to the amps of the battery. Do they related in some way? Or I am just confusing myself as I was looking into Steam Engine with HB6 battery preset with 0.1 ohm coil and results are not so good (only a few minutes run time even with small wattage).
Am I missing something here? For dual battery, do I have to double Battery Voltage and Nominal Voltage in calculator?
Do you know where to find C rating for VTC5a (planned to have more of them) and VTC 4 (I have a few of those).

I have mostly dual RBA decks and one atomizer with single deck, so I was planning to have 0.2 ohm installed on dual decks and 0.1 ohm on single deck.
In the past a few hours I get enough info to realize that such a low resistance is not necessary for me (all my coils are going to be Claptons). Hence my post.

Please advise.

To make things short and simple.
In a regulated device you can safely use it up to 70W with a single VTC4 and up to 140W with two, up to 75W with a single VTC5A and up to 150W with two.
The resistance of the coil(s) is irrelevant as long as it's within the capabilities of the mod

Regulated it depends on the limitation of the PCB.....
Unregulated is dependant on amp rating of battery.......

Sent from my SCH-I605 using Tapatalk

Thanks for helping folks
Last thing.
Steam Engine Battery Drain calculator is based on a single battery preset, what if I have dual battery in series - regulated box mod. Do I just double Nominal Voltage and Battery Voltage in calculator?

And C rating is CDR÷Ah (CDR in mA divided by mAh of a battery ) based on numbers from @Mooch, correct? So VTC5a C rating is 25,000 mA/2,500 mAh=10. Correct?

I think, finally I beginning to understand this all picture, just need to be sure.

Please confirm my thoughts and correct if necessary.

Thanks in advance.