Calculating amp draw series

[Randy Smith]

Sigelei 150w tc
LG he4 x 2

Releaux dna 200
LG hg2 x 3

I'm still confused on how to calculate the amp draw with these regulated devices.

I use 0.15 - 0.4 ohm coils only.

With the three batteries or the two batteries is the draw being divided between the batteries? Right now on the releaux I've got a 0.19 dual fused clapton at 70 watts. What's the amp draw? A single 18650 would be 19.19A, but is it dividing for me ??

Or should I worry with the regulated? Doesn't the dna have over discharge protection?

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[roxynoodle]

Resistance is irrelevant on a regulated mod.

I think the Sigelei cuts you off at 3.4v left on the batteries. So for 2 batts, 2 × 3.4 = 6.8v.

I = P ÷ E

I = 70W ÷ 6.8v = 10.3A

 

[IMFire3605]

Sigelei 150w tc
LG he4 x 2

Releaux dna 200
LG hg2 x 3

I'm still confused on how to calculate the amp draw with these regulated devices.

I use 0.15 - 0.4 ohm coils only.

With the three batteries or the two batteries is the draw being divided between the batteries? Right now on the releaux I've got a 0.19 dual fused clapton at 70 watts. What's the amp draw? A single 18650 would be 19.19A, but is it dividing for me ??

Or should I worry with the regulated? Doesn't the dna have over discharge protection?

Sent from my SGH-I337M using Tapatalk

Regulated Series configurations the calculation is (Max Wattage or Wattage Set/Lowest Battery Charge=Amps)

Series Configuration Voltage is Double, mAh and CDR are the same as a single battery, so lowest battery charge is 3.2v with most mods before cutoff, we double and triple here.

Sig150
150watts max/6.4=23.4375 amps both batteries must provide, on both it is 23.4375amps, not divided across both

Releaux 200watt, 3x batteries, lowest power state is 9.6v
200 watts max/9.6v=20.83333amps all three batteries have to provide.

Parallel configuration like the iStick100watt, voltage is the same as a single battery, mAh and Amp load and balanced between both batteries.
100watts/3.2v=31.25amps total 31.25/2batteries=15.625amps each battery has to provide

 

[edyle]

Sigelei 150w tc
LG he4 x 2

Releaux dna 200
LG hg2 x 3

I'm still confused on how to calculate the amp draw with these regulated devices.

I use 0.15 - 0.4 ohm coils only.

With the three batteries or the two batteries is the draw being divided between the batteries? Right now on the releaux I've got a 0.19 dual fused clapton at 70 watts. What's the amp draw? A single 18650 would be 19.19A, but is it dividing for me ??

Or should I worry with the regulated? Doesn't the dna have over discharge protection?

Sent from my SGH-I337M using Tapatalk

forget the amps and just look at the watts per battery instead.

on the releaux you've got 3 batts supplying 70 watts.
That's 23 watts per batt.

 

[Randy Smith]

So say I'm using a 0.19 build at 75 watts. The amp draw is 20 some amps, so therefore I'm gonna be taking that same amp draw out of every battery?

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[roxynoodle]

You aren't reading our answers

I = P ÷ E. E is the low cutoff for the batteries × the number of batteries (Series).

Resistance is irrelevant.

 

[Randy Smith]

How is the resistance of my coil irrelevant? Lower the ohms the more the draw? Am I safe with a 0.15 ohm coil at 100 watts? What would my amp draw be at that? What's the lowest build I could go at what watts to reach a 20a draw?

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[Rossum]

On a regulated mod, the resistance of the coil(s) is not the determining factor; your power setting is.

 

[Randy Smith]

Hmm. So 200w divided by 3 batteries at say 3.5v ?

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[Randy Smith]

Alright so basically I'm safe with a 0.1 coil in either mod at 100 watts, right? Yes or no

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[crxess]

Wait, I got this

Actually, with a Regulated Mod - I read and stay within recommendations. Never had a problem.

 

[IMFire3605]

Regulated mod

Wattage/Lowest Battery Charge = Max Amps to be pulled from the batteries. There is no over thinking, no magic number, that is the formula.

Series configuration we adjust the voltage by number of batteries, as it is basically stacking just like batteries in a Maglight Flashlight, 3.2v lowest charge, 4.2v fresh charge, so series of 2 batteries = 6.4v and 8.4v, 3 batteries = 9.6v and 12.6v. It's not that complex, I've given you the answer above for both mods, the reference to the iStick100w was to show what a parallel regulated box mod is calculated.

Mechanicals
with these then you start looking at Resistance as a major factor, where a regulated the only consideration of resistance is if the firmware of the control board supports a coil that low in resistance, on a mech the coil is your only throttle and safety brake.

1ohm coil with a fresh charged battery at 4.2v= 4.2amps
0.5ohm coil = 8.4amps
0.25ohm coil = 16.8amps
0.14ohm coil = 30amps

So, answer is yes, if the mod firmware can handle a 0.1ohm coil, 100watts is the same amp draw as 100watts with a 0.5ohm coil, a regulated mod adjusts for watts through raw voltage, thus why most the higher end regulateds use series battery configurations, where with a mech, to increase watts given a set voltage that can not be adjusted, then Ohms (Resistance) come into major play.

 

[Randy Smith]

So how come we see people with mechs building 0.02 hahahah death wish

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[Randy Smith]

Sigelei 150
100/6.4=15.6A

15.6A so that's what's being drawn at that given watts no matter what resistance my coil is?

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[roxynoodle]

Sigelei 150
100/6.4=15.6A

15.6A so that's what's being drawn at that given watts no matter what resistance my coil is?

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Ding ding ding!

Yes.

 

[roxynoodle]

So how come we see people with mechs building 0.02 hahahah death wish

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Because they like pipe bombs?

 

[Randy Smith]

Ding ding ding!

Yes.

Thank you so much for dealing with my dumb questions lol. I was all worried about my amp draw but it all makes so much sense now hahahahaha

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[roxynoodle]

Thank you so much for dealing with my dumb questions lol. I was all worried about my amp draw but it all makes so much sense now hahahahaha

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And hey, you learned something new and helpful to your vaping career. And did the math, good job!

Better than one person I know who won't even put the numbers into a calculator and calls me instead

 

[Randy Smith]

So does the parrot vape? Lol

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[roxynoodle]

So does the parrot vape? Lol

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Not that one. One of my African Greys imitates the sound and says, "Oobie tootles.". . Her name is Oobie. And apparently she's a tootle puffer.