Volts, amperage, resistance

[Michael777]

Hi,

I'm expecting my Maxi RoughStack any day and I'm hoping someone can ease my
mind about something.


I ordered a couple of dual coil cartomizers the description of which is (in part):

"Each Cartomizer contains dual 3.2 ohm coils in parallel giving a total resistance of approximately 1.6 ohms."


I bought a couple of 3.7 volt batteries: "TrustFire Protected 18650 Battery,
2400 mah"

Now the amperage pulled should be about 3.7/1.6 = 2.312

But reportedly there is some kind of circuit board in the device which
presumably draws some current, so it looks like I'd be pushing the limit of the
batteries rated (not necessarily *actual*, sigh) amperage (if I'm intrepreting
"mah" correctly).

So I'm wondering if anyone has any feedback or on this, or any experience with a Maxi RoughStack using a 18650 battery.

I'll also ask MadVapes about this, but I thought I might get some useful feedback/info here.

Thanks

P.S. I resisted the urge to make a "resistance is futile" reference. Obviously
I caved.

 

[Chinner]

Hey man, I'm no expert but this article has been super helpful to me, maybe it'll be a start!

FAQ: What are these HV and LR attys? Do I need them? Are they safe to use? | Vaping Guides

 

[JWebb]

Welcome to ECF Michael777, you can also go to ECF LIbrary on the home page and read the "Wonderful World of Vaping" it tells you all about this stuff.

 

[Michael777]

Hey man, I'm no expert but this article has been super helpful to me, maybe it'll be a start!

FAQ: What are these HV and LR attys? Do I need them? Are they safe to use? | Vaping Guides

Thanks, I'll check that out.

 

[AttyPops]

The DC's are tricky, but I'll bet an 18650 will handle it. However at 3.7 volts, it might still be a bit cool. IDK tho since it is dual. If you'd vape a single 3.1 ohm on it, this will be like two PV's at the same time, so it could work. Some may use high drain IMR batteries so they don't trip the protection. Someone that knows the amp rating of those batteries may help more.

So Bump too.

mAh is a capacity rating, but won't tell you the max amp draw.

 

[Hoosier]

The mAh is capacity and has little to do with the discharge rate. (At least for the way we typically view batteries.)

The discharge maximum current, amps, is referenced from the C rating. I've had batteries that should be the same as what you have and I don't think I was ever able to get over 2 amps out of them. (Which after a few weeks of trying to get that much out of them started to drop in performance and I disposed of all but 2 of them.)

So your working, loaded, voltage will probably be a little lower.

While I haven't seen it yet, the search is still ongoing for a battery that can discharge more than 2 amps while still having a good life span, that most would consider cheap is on going. Still have to pay a bit more to get the performance.

 

[DonDaBoomVape]

Thanks, Chinner and JWebb, for the plugs!

FYI: There is an updated and enhanced Version 2 of that WWV guide. I can be found on the same Vaping Guides website as that FAQ answer about HV and LR attys (and volts/ohms/watts/amps stuff).

 

[MRobs23]

the 2400mAh rating of the battery is not the max amount of current the battery can handle. (In truth, that number will be limited by the coil itself long before the battery)

all it means is the battery can sustain a 2400mA discharge for 1 hour before it dies. So, if you have a load that requires more than a 2400mA draw, the battery will last less than an hour.

 

[AttyPops]

Did you get the RS? How's it working with that trustFire 18650 2400 battery on the DC's, or will you need IMR's?