should an IMR 18490 1100 mah battery die this quick?

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f(x)'=cosx

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I am rocking a 3.5ml tank with a dual coil carto on a provari V2. Because the ohm rating on the carto is 3.0 I have to use my provari at 5.5-6.0 volts in order to get a decent vape. My question is, should my battery only last me approx 5 hours of so-so vaping (10 hits an hour)? I have used stacked lifpo 3.7V 700 mah batts in my silver bullet for longer than 5 hours so I was surprised to see the batts die so quick. Any information would be great, also these batteries are brand new.
 

Dougiestyle

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I have a boosted mod (Kick) and my 18500s only go about 5hrs on DCs. I switched to 1.7ohm single coils to alleviate the amp draw, and I'm getting better times from my batts. Kinda apples and oranges between VV and VW, but some of the same principles apply. If your PV set-up is asking for alotta amps you better have the mAh to back it up.
 

six

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I have a boosted mod (Kick) and my 18500s only go about 5hrs on DCs. I switched to 1.7ohm single coils to alleviate the amp draw, and I'm getting better times from my batts. Kinda apples and oranges between VV and VW, but some of the same principles apply.

Alleviate the amp draw? A tenth of an ohm isn't much difference. If you had your kick set to 9 watts (just an example), your single coil 1.7 ohm requires 2.3 amps. With your kick set to 9 watts using a 1.6 ohm dual coil, your amp draw is 2.37 amps.

VV and VW are both still subject to ohms law. It isn't really a difference, just opposite ends of the same equation. Current = the square root of power divided by resistance. The way VW is implemented with the darwin and kick is a little different than VV because the device periodically tests the resistance of the circuit and makes voltage changes based on the ohms it reads ... but really, VW is VV and VV is VW.
 
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jimbalny

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I use aw imr 18500's in my kicked reo grand and I go through 2-3 batteries a day. Though very rarely do I let them go below 3.7 volts (I have 6 batteries all numbered, when number one is below 3.8 I go to number 2 and depending on which I have in my pv I know which ones need charge for the most part. I keep a mini voltage meter handy that i made, a little obsessive about battery maintenance but its $$$ saved in the long run)

I have a boosted mod (Kick) and my 18500s only go about 5hrs on DCs. I switched to 1.7ohm single coils to alleviate the amp draw, and I'm getting better times from my batts. Kinda apples and oranges between VV and VW, but some of the same principles apply. If your PV set-up is asking for alotta amps you better have the mAh to back it up.

What wattage do you have it set at out of curiosity?
 

hificat101

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I am rocking a 3.5ml tank with a dual coil carto on a provari V2. Because the ohm rating on the carto is 3.0 I have to use my provari at 5.5-6.0 volts in order to get a decent vape. My question is, should my battery only last me approx 5 hours of so-so vaping (10 hits an hour)? I have used stacked lifpo 3.7V 700 mah batts in my silver bullet for longer than 5 hours so I was surprised to see the batts die so quick. Any information would be great, also these batteries are brand new.

5 hours seems about right on a dual coil running at 5v of an 18490. Is there an extension available for the Provari? If so maybe try 18650's.
 

Richie G

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Alleviate the amp draw? A tenth of an ohm isn't much difference. If you had your kick set to 9 watts (just an example), your single coil 1.7 ohm requires 2.3 amps. With your kick set to 9 watts using a 1.6 ohm dual coil, your amp draw is 2.37 amps.

VV and VW are both still subject to ohms law. It isn't really a difference, just opposite ends of the same equation. Current = the square root of power divided by resistance. The way VW is implemented with the darwin and kick is a little different than VV because the device periodically tests the resistance of the circuit and makes voltage changes based on the ohms it reads ... but really, VW is VV and VV is VW.

I hear ya, Six. But we can't just disregard the low voltage we use. A tenth of an ohm is insignificant with respect to household voltage but we truly put our little batteries thru hell with a 2+ amp draw on our PV batts.

I mean, small TVs don't draw 2 amps @ 110 volts. A 100 W lamp draws less than an amp @ 110 v. With our PVs sourced with a 4-ish volt battery it's *almost* as if every iota of resistance counts. =)

Both my VVs are of the buck variety -- (18650s and 14500s) 10-12 hours is normal for me while consuming 2-ish mls of liquid.
 
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six

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I hear ya, Six. But we can't just disregard the low voltage we use. A tenth of an ohm is insignificant with respect to household current but we truly put our little batteries thru hell with a 2+ amp draw on our PV batts.

If it were anything but the kick, I wouldn't have mentioned it. The kick limits out at 10 watts (I think that's what I read). So, moving from a dual to a single coil is of limited benefit... but then, with a 10w limit, the dual coils couldn't really perform to their potential so the benefit is actually in the better performance of a single low resistance coil rather than two higher resistance coils.

I didn't mean to drag the thread off topic. It does seem to me that 10 drags per hour for 5 hours (total of 50 drags) is sort of short battery life even at boosted HV. The OP is using a 3.0 ohm DC somewhere around 6.0v which requires 2 amps (or less - he said 5.5v to 6.0v). It really seems that a boosted 18490 should be able to go a bit longer than 50 drags. And with a 3.0 ohm carto, I'm thinking dual vs single coil doesn't have much to do with short battery life.
 

Dougiestyle

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What wattage do you have it set at out of curiosity?
I have the kick set around 8.5W. The single coils seem to allow longer battery run time IMO. If I'm running a fresh batt from when I wake up and use DCs, I have to swap batts at lunchtime. If the same scenarion with single coils, I swap at the end of my workday. Dunno the variables of usage from day to day, so I may be off base.
 
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