Battery life at different ohms and voltages

[cocacola31173]

Ok so I have always used 2 ohm cartos but trying out some 3.2 ohms. I finding though that I have to put the voltage on the 3.2 ohm to over 5 volts to get what I like. Will this wear down the battery faster then if I just use a 2 ohm or lower carto and only use 4 volts?

 

[ncpatches]

That's a good question. I have a VV/VW ordered and would like to know the answer to that too. Thanks!

 

[AttyPops]

This comes up every once in a while.

Basically, there's not a 100% true rule, since devices vary. The battery outputs it's voltage the same way...say 3.7 volts...but the amp draw varies. Actually, the voltage starts at 4.2 and drops from there, but never mind that now. So the voltage circuits "boost" the voltage. And depending on the design, the efficiency can vary.

For stacked battery devices (research this 1st, don't just go stacking batteries...it's dangerous) they only "buck" the voltage...cut it down. I use a VV box mod that takes two batteries in series for that reason, and it has a switching regulator that's pretty efficient.

So basically, to get more volts, boosters draw more amps. You don't get something for nothing.

In the end, it's really about the watts you use. And that is affected by the ohms of the coil as well as the voltage. Research "ohms law" and such. Basically, watts = voltage squared divided by ohms. So...watts = V²/Ω. The more you use, the faster it will discharge.

That's a total over simplification, but gets you in the ballpark. For example, some regulators are more efficient at higher voltages. Others seem to find lower voltage lasts longer with their devices. Sigh. But a guarantee is that more watts = faster use than less watts.

 

[eda123]

Divide your voltage by the ohms of your coil. That will give you current. The higher the current, the faster your battery will drain.

 

[rbeckys8]

good to know..thanks for the info people!!

 

[Dampmaskin]

For regulated devices, the calculation that makes the most sense, is finding the wattage you're vaping at.

The wattage drained from the battery equals the wattage going into the atomizer, plus the wattage lost in the regulating circuit.

These circuits typically have an efficiency of 80-95%, but the efficiency depends on the make and model of your PV, the battery's voltage at any given moment, the atomizer resistance, and the atomizer voltage.