Am I correct about this relation with batteries, amps, and mah?

[Wickeddeuce]

So this is my understanding:

a 1 ohm coil at 4v pulls 4 amps, a 1.5 ohm coil at 4v pulls 2.67 amps. 1 amp = 1000 mili amps... so the 1100 mah battery can at a continuous use have a 1.1 amp draw for a full hour... so... the 1 ohm coil firing at 4v (i realize this would change, just saying) would last for approximately 15 minutes of continuous use... where as the 1.5 ohm coil at 4v can would last for approximately 25 minutes of continuous use...

I am not sure that this is exact and correct, this is what I have interpreted from my studying of all of this... now continuing my silly hypothesis that may or may not be correct...

lets say an average vape pull is 10 seconds just to keep it simple... and lets say your average vaper takes 12 pulls an hour... so in one hour 2 minutes of battery life is taken

(this is assuming a perfect every variable remains the same mentality) so with a 1 ohm coil, at 4v 10 sec pull, 12 pulls an hour, an 18490 1100 mah battery will last approximately 7 and a half hours before the 1100 mah is depleted... the 1.5 ohm coil at 4v, 10 sec pull, 12 pulls an hour will last approximately 12 and a half hours...

i realize there is more math and more variables present here than what i have done, but this is my understanding and my take on things...

i realize the volts and everything would change meaning the amps would change... but i am just trying to figure this out... so lets assume that the volts wouldnt change for the sake of what i said...

 

[Thrasher]

In most cases the discharge curve and Mah rating is achieved with a very low resistance load when tested, the stress put on the battery by different loads will change how long it will take to drain them.
also
the rating is from full to dead, in most cases we do not fully discharge a battery while vaping, as once you get below 3.5v the battery in most cases cant put out the amperage anymore.

as you have noted it is all in the variables, and with vaping there are soo many of them it is almost impossible to accurately calculate the amount of time you can get from a specific battery.

but most of the theory and math is close (if the rating and all things were perfect.)

 

[rurwin]

You are correct.

There are many variables you are not taking into account, such as the effective capacity of the battery being dependent on the current. With a regulated battery the supplied voltage is constant no matter what the battery is putting out, so the current draw from the battery actually increases as the battery is depleted. With a mechanical mod or an unregulated battery, the current decreases.

But the basic idea is right

 

[InTheShade]

I see an error in your calculation.

12 pulls an hour

Whoa, who's rationing my vapes?

Just kidding Wicked, your math is good, but as others have said, the variables are just too numerous to get any closer than a caveated ball-park.

 

[rurwin]

@InTheShade, yeah, but the average draw was estimated at ten seconds. eGo batteries cut off at ten seconds. The average draw is 4-5 seconds I think, so that's 24 draws an hour averaged over seven hours. Unless you're really hitting the e-cig hard that's probably in the ball-park.

 

[Dzaw]

I'm closer to 12 pulls in 2-3 minutes most of the day...

 

[bcalvanese]

Lets keep it simple...

((1 mod) + (1 battery) + (1 delivery device)) + (tooting) = (battery drainage)

 

[Wickeddeuce]

ok this was to make a slight point in regards to higher ohms, if still an enjoyable vape is not a bad thing... i was not trying to limit anything, or anything similar to that, it was just easier to quantify using a set amount of variables...

again my point i was trying to make is, if i can get an enjoyable vape at 1.5 ohms that is comparable to a vape at 1 ohm (havent tried or compared but was making a point) it is more beneficial to vape at 1.5 ohms as the battery will last longer...

not at all trying to say this or that here or there