Variable voltage or low resistance?

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Doug T

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Hello all. I've been vaping a couple of months now. No butts since and never will again! Started with a volt, went to the x2 with a clearomiser. Just can't get enough vape and hit. So I'm looking at the ego-c twist. My question is shouldn't a low resistance atomiser give me the same effect as a higher voltage battery? Do I need both. Or one or the other? And is there a LR that fits my X2? Thanks.
 

NancyR

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hi and congrats,

Many people will tell you right off the bat to get a twist, and the twist might be fine. But I would also suggest you see about having a good backup that is also 510. Even if you get 2 twist batteries it never hurts to have a non vv as a backup. If they all use 510 then you are set if you need to use something from one on the other.
 

ShogaNinja

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The best answer here is both if you want versatility.

To help you to better understand what ohms vs voltage can do here is a chart:
http://www.e-cigarette-forum.com/fo...ur-battery-temperature-preferences-excel.html

It's up to you what you do with this knowledge.

You will also note that the resistance gets up so high that common atomizers/cartomizers/clearomizers aren't sold at that level of resistance. This is why the EGO Twist is the best solution, and also why most people who have Provaris and Lavatubes vape within the range of the twist anyway. Plus the Provari and Lavatube both have a secret safety feature that lowers the voltage to safe ranges without your knowledge. It makes it impossible to push the envelope with dual and triple coil cartos etc. That, and cost is what makes the twist a superior choice IMO.
 
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cyberwolf

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A low resistance cartomizer will give you the same relative effect as a standard resistance carto at higher voltage if you device can handle the amperage draw. Mini batteries typically can't and even eGo style batteries can be damaged by the extra current that a LR carto draws. That said, there are LR 808 cartos that may work for you, like these from Smoktek.
 

sailorman

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You will also note that the resistance gets up so high that common atomizers/cartomizers/clearomizers aren't sold at that level of resistance. This is why the EGO Twist is the best solution, and also why most people who have Provaris and Lavatubes vape within the range of the twist anyway. Plus the Provari and Lavatube both have a secret safety feature that lowers the voltage to safe ranges without your knowledge. It makes it impossible to push the envelope with dual and triple coil cartos etc. That, and cost is what makes the twist a superior choice IMO.

I disagree that most people who have Provaris and Lavatubes vape within the range of the Twist anyway. I often vape at 5+ volts with 3.5+ resistance. A higher resistance/voltage gives you finer control over the wattage consumed. A 0.1V change at 4.5V with a 3ohm carto produces less difference in wattage than a 0.1V change from 3.7V with a 2ohm carto.

As for the "secret safety feature", the Provari will alert you with an error message. The LT will adjust your voltage downward. The Twist will let you destroy its battery and/or burn out your coil. The Twist battery is only rated for 2.5amps, just like the V1 Lavatubes. The difference is that if you attempt to exceed 3.7 volts with 1.5ohms on a LT, it will not let you. The Twist will let you do it for a while until the battery is permanently damaged and it just sits there blinking at you.

Dual coil 1.5ohm cartos aren't very good for under 4.5 volts. The Twist goes to 4.8Volts. At 4.8 volts, you'd be drawing 3.2 amps, which is the limit of a Provari and 0.7 amps above what the Twist is rated for. Yeah, you can use a 1.5ohm DC and "push the envelope" with a Twist. But you'd be stupid to do it. You'd be destroying your battery and, in return, you'd be vaping with a whopping 7.68 watts. If you were using a single coil 3ohm carto, you'd get the same wattage and only draw half the current.
 

Flyer

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Sorry small correction of a spec that has come up a few times. Provari V2 is 3.5 amps as stated in their product description-

Amperage Limiting to 3.5 amps
The ProVari will monitor and shut itself off if it detects any excessive over-current conditions.

If this error occurs the ProVari will alert you by displaying E2 on the digital display.
Fix: Lower your voltage setting.

V2 - Version 2 now has a higher amperage limit of 3.5amp for low resistance atomizers and cartomizers.
 

r77r7r

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    I disagree that most people who have Provaris and Lavatubes vape within the range of the Twist anyway. I often vape at 5+ volts with 3.5+ resistance. A higher resistance/voltage gives you finer control over the wattage consumed. A 0.1V change at 4.5V with a 3ohm carto produces less difference in wattage than a 0.1V change from 3.7V with a 2ohm carto.

    As for the "secret safety feature", the Provari will alert you with an error message. The LT will adjust your voltage downward. The Twist will let you destroy its battery and/or burn out your coil. The Twist battery is only rated for 2.5amps, just like the V1 Lavatubes. The difference is that if you attempt to exceed 3.7 volts with 1.5ohms on a LT, it will not let you. The Twist will let you do it for a while until the battery is permanently damaged and it just sits there blinking at you.

    Dual coil 1.5ohm cartos aren't very good for under 4.5 volts. The Twist goes to 4.8Volts. At 4.8 volts, you'd be drawing 3.2 amps, which is the limit of a Provari and 0.7 amps above what the Twist is rated for. Yeah, you can use a 1.5ohm DC and "push the envelope" with a Twist. But you'd be stupid to do it. You'd be destroying your battery and, in return, you'd be vaping with a whopping 7.68 watts. If you were using a single coil 3ohm carto, you'd get the same wattage and only draw half the current.

    I think that the newer Joyes have short- circuit protection, as well as other protections, to keep these things from happening.
     

    sailorman

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    I think that the newer Joyes have short- circuit protection, as well as other protections, to keep these things from happening.

    I'm sure they have protection against overheating and/or exploding due to overcurrent, short circuit or over-discharge conditions. But they don't have anything set to prevent the battery from operating at a current higher than it's rated for. It won't just suddenly blow up, but its lifespan will be significantly shortened. If you try to draw way too much, it'll shut down and blink at you. Somewhere between it's rated current and the point at which it shuts down is where the damage is done.

    The point I was making was that a lack of overcurrent protection for the battery or coil is not a feature and certainly does not make it a "superior" choice. There's a difference between "pushing the envelope" and being stupid. Drawing 3 amps from a 2.5 amp battery, just because you can, is just stupid.
     

    sailorman

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    Sorry small correction of a spec that has come up a few times. Provari V2 is 3.5 amps as stated in their product description-

    Amperage Limiting to 3.5 amps
    The ProVari will monitor and shut itself off if it detects any excessive over-current conditions.

    If this error occurs the ProVari will alert you by displaying E2 on the digital display.
    Fix: Lower your voltage setting.

    V2 - Version 2 now has a higher amperage limit of 3.5amp for low resistance atomizers and cartomizers.

    Thanks for the correction. I must've been thinking of the V1. At any rate, at least it does something to prevent battery abuse, which is more than can be said for the Twist. Bottom line is that if you're PV can't handle pretty close to 3 amps, you shouldn't be using a 1.5ohm DC carto in the first place. Neither the V1 LT or the Twist can and if the Twist will let you exceed 3.7V with a 1.5ohm DC carto, it's not a feature, it's a design flaw that will lead to premature battery death.
     

    Doug T

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    Okay, so maybe I don't need a twist but I still want to get the ego 1000mah. What's the difference between the ego "c" and ego "t". Also I'm looking at the smoketech dual coil 1.6 atomizer to go with the ego battery. If I'm reading you correctly it sounds like you don't like that set-up but my vendor is recommending that for a great hit. Thanks.
     

    mostapha

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    …The Twist will let you destroy its battery and/or burn out your coil. The Twist battery is only rated for 2.5amps…The Twist will let you [exceed its current limit] for a while until the battery is permanently damaged and it just sits there blinking at you.

    That contradicts every single thing that I've read, watched, or experienced about the twist as well as most of what I've read about batteries.

    The twist is limited to ~2.5A, which means it won't run dual coils. Neither will the early lava tubes, which some people are still selling. There are some revisions that will run them okay, but I honestly think that based on math, dual coils are a joke anyway.

    What that limit means is that the Twist won't go over about 3.75 V driving a 1.5 Ω dual coil, which will give you a marginally better experience than a standard resistance carto on a cig-a-like battery. Except that some people show less than that on certain meters, probably because the boost circuit it uses actually generates a wave instead of raw DC current and they don't know that their meters are measuring wrong.

    If you know about the math or care to, watch steeljan's torture test of the ego twist on youtube. It's impressive. It also takes like half an hour.

    The Twist does have shortcomings, but I don't see any reason to buy any other ego-style batteries while it exists. If it's not good enough for you, move into high-volt Mods.

    Dual coil 1.5ohm cartos aren't very good for under 4.5 volts.

    I'm using a simplification and pretending all the VV devices actually output DC. They don't, but the math is close enough to make my point.

    So……assuming you're not current limited…you're suggesting 13.5W……which is about the same temperature in each coil as 6.75 W on a single coil……which is about the same as a LR Boge on an unregulated 3.7V mod……just draining your battery faster, stressing your wicking harder and maybe producing vapor a bit faster.

    See why I think dual coils are a joke? If you like warm vapor, dual coils just mathematically aren't the right thing to use. If you like short drags and cool vapor……then just don't use cheap VV and math says you'll probably like dual coils.

    Personally…based on my limited experience……I don't think there's any reason to try them unless you're going to get up towards 20W (5.5V, drawing 3.7A)……which gives 10W per coil……which tops out about where a high-ish LR carto/atty does on the Twist……and is too much for the Provari (IIRC), Buzz Pro (IIRC), Darwin, or Kick. Based on just the numbers, there are a few well-respected reviewers that agree with that based on experience.

    So, if you want something like a Twist, you'd theoretically want a good range of power, right? How high can you go?

    ~12W (2.5Amp limit at 4.8V)……which happens right about 2 Ohms…maybe a little higher if I'm estimating the real numbers from this approximation correctly. How low will it go? At the bottom of the range…~5W.

    A $25 VV device that goes from 5 to 12 W seems pretty good to me, and that's what happens when you stick around 2 Ohms for your carto/atty/clearo on the Twist. If it's a little off that, you just sacrifice some at the top…which is no big deal.

    For reference…the Kick tops out at 10W and a standard, cheap cig-a-like with an SR carto is probably putting out about 4W.
     

    zoiDman

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    .... Plus the Provari and Lavatube both have a secret safety feature that lowers the voltage to safe ranges without your knowledge. It makes it impossible to push the envelope with dual and triple coil cartos etc. That, and cost is what makes the twist a superior choice IMO.

    Perhaps this is a New Feature of the Provari.

    But My Provari will output Displayed Voltage if it can. If it Can't, it will not Output any Voltage and Dispay an error.

    When did you buy your Provari and what Revision is it?
     
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    sdramones

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    thanks for the reference ... very helpful

    The best answer here is both if you want versatility.

    To help you to better understand what ohms vs voltage can do here is a chart:
    http://www.e-cigarette-forum.com/fo...ur-battery-temperature-preferences-excel.html

    It's up to you what you do with this knowledge.

    You will also note that the resistance gets up so high that common atomizers/cartomizers/clearomizers aren't sold at that level of resistance. This is why the EGO Twist is the best solution, and also why most people who have Provaris and Lavatubes vape within the range of the twist anyway. Plus the Provari and Lavatube both have a secret safety feature that lowers the voltage to safe ranges without your knowledge. It makes it impossible to push the envelope with dual and triple coil cartos etc. That, and cost is what makes the twist a superior choice IMO.
     
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