Coil resistance to battery voltage/ drain/charge relationship - questions 101 again

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dezyner

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coil resistance 101 questions here again. In short, working under false/incorrect assumptions, again. Ok, maybe I should have studied more in school and partied less(nahhh, but it sounded good), but, too old to change that now. So, short cut answers to Electronics for dummies in real simple terms.

I assumed that lower resistance, meant lower volts to fire, which would drain batteries at a slower rate. wrong? My faulty logic was, lower voltage was needed to fire the coil so the battery MUST last longer. ???

Seems in practical application that the lower the ohms and the higher I set voltage in relation to those ohms, the bigger that spread, the quicker my batts die? 1.5 ohms fired at 4.5 volts is worse on my batts than say 2.5 ohms fired at 4.5 volts? is that the basic idea? and when applied to mechs, same deal? sub ohms at a constant rate are batt killers? because of the spread?

Am I beating my batteries to a quick death by using coils at 1.5-2.2 ohm resistance? Would I be better off on a variable volt building 2.5 or 2.8 coils, and just turning the voltage up? Again, I thought higher voltage would drain the battery faster than lower voltage, so I was building lower ohms not for plumes or "better" vape, I was just working under faulty logic?

kinda thinking I already know the answer, but maybe someone more experienced than I can weigh in with a real simple answer?

As always, thanks in advance folks. Cheers.
 

BuzzKilla

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your missing a variable, Amps!

the higher the amp draw, the quicker the battery drain.
as long as you are not exceeding the limitations(amp draw) of your mod/battery, you are not damaging anything.
But in our application, being close to that limit isn't safe either....

Ohms Law
Amps = Voltage/Ohms

a simplified answer, to an otherwise heavy question.
 

JKuro

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The lower the resistance, the more current that will flow through it, given the set amount of voltage. A 1.5 ohm coil at 4.5 volts will flow 3 amps. 2.5 ohms at 4.5 draws 1.8 amps from the battery, so the drain on the battery is lower.
A low range of 1.5 ohm coils wont really hurt the battery but may shorten its life slightly as compared to only drawing 1.8 amps due to the amount of recharge cycles. Other factors include length and frequency of your draw time (battery usage).

Set your voltage to what gives you the most satisfaction. Different atomizers and juices and personal preference will determine what voltage is best for you. If your battery/device doesn't last long enough for you, then you may need higher capacity batteries, or upgrade your device.
 
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