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Sigelei 75w tc

Discussion in 'Temperature Control' started by Gasman, Sep 27, 2015.

  1. emu

    emu Banned

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    Yeah Dave mine are only 20 and 30 watt and both haven't deteriorated at all, the only thing I can't work out is why I have to have the 30 watt stick on 4 volts to get the same effect as the 20 watt stick on 3 volts.....
     
  2. DaveJ

    DaveJ I Vape

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    Jun 2, 2015
    Location:
    Perth, Western Australia
    The 20 watt iStick has a failing. (well, several, but that's for another day).

    The iStick 20 cannot turn down it's output below a certain level - even though it's display says it has turned down the output. In essence, when running it at "low outputs" it is putting out more power than you ask for.

    The istick 30/50 do not suffer this limitation.
     
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  3. Dave C

    Dave C Member

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    Yeah that's weird, got me stumped :shrug: you'd think they'd be the same.
     
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  4. Dave C

    Dave C Member

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    That answers our question, thanks Dave:thumbup:
     
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  5. emu

    emu Banned

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    The 30 watt is sub ohm, might be something in the electronics,
     
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  6. emu

    emu Banned

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    I'll have to break out the multi meter now, you got me curious.
     
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  7. Dave C

    Dave C Member

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    Makes sence that's the only diffence between the two
     
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  8. DaveJ

    DaveJ I Vape

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    Perth, Western Australia
    Tis. I read up about it in another place. It was all entirely too techie, but the bottom line was that it could only go down as low as something like "95 percent of battery voltage" or something similar.

    Basically, our vaping batteries operate somewhere between 3.3 to 4.2 volts - depending on it's state of charge. The electronics in modern VW mods takes that, looks at the atty resistance, and makes the output whatever is needed to make the coil heat to so many watts. The iStick 20 cannot drop the output voltage below that "so much of battery charge" - or at least that was the way I remember reading it.

    So, iffn ya want to run low watts (less than about 8 or so), ya need a higher resistance coil - try a 2 or 2.5 ohm coil to get ya watts down on an iStick 20.
     
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  9. Dave C

    Dave C Member

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    You are a fauntaine of knowledge David! :sillygrin:
     
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  10. DaveJ

    DaveJ I Vape

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    Sometimes. Only sometimes.

    Just so happens I remember reading about it. Others have also been caught by exactly the same thing ... the iStick 20 "running hot".
     
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  11. emu

    emu Banned

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    Have to take your word for it, take the tank off hit the fire button and the screen says "no atomizer" .
    Must need a circuit with resistance to function, what else is there to do on a Sunday afternoon......?
     
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  12. DaveJ

    DaveJ I Vape

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    Jun 2, 2015
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    Perth, Western Australia
    That is exactly what should happen.

    Normal protection smarts. Helps save you from doing something silly. And from errors/mistakes/shorts/overloading the battery.
     
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  13. Dave C

    Dave C Member

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    BEER!!!!!:banana:
     
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  14. emu

    emu Banned

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    I don't drink and got no drugs so straightville for me, (contrary to random chat post's) aaaaw just trying to fit in.
    Honesty from this day forward
     
  15. Dave C

    Dave C Member

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    Whaaaat!!! No Drugs or beer, that would be the end for me.:hanged: :sillygrin:
     
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  16. emu

    emu Banned

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    It explains my insanity :hmmm:[​IMG]
     
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  17. DaveJ

    DaveJ I Vape

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    Perth, Western Australia
    hey fellas

    This has now strayed well away from the original intent of the thread... Do you reckon we can move the lighthearted stuff elsewhere, please?
     
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  18. DogMan

    DogMan Butler

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    Jun 3, 2015
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    S/E Melbourne
    Posts on an attie with a coil on it. + to +. - to -. Not sure if your tanks will allow that, very easy with rda

    Sent from my GT-I9506 using Tapatalk
     
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  19. emu

    emu Banned

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    Rub it in dogman, but you have given me an idea, might have to pull an old coil apart though, always wondered what's inside....
     
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  20. Noe

    Noe Adorably quirky ... QUIRKY Noe! VCA Approved Post Whore

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    All rechargeable batteries have a number of duty cycles from new, each time you drain them & recharge them, 1 cycle is used up.
    For Li-Ion the number is usually around 300 cycles, Li-Poly (usually what built in batteries are) have around the same number of duty cycles.
    If you push your batteries hard, by making them run at or close to their maximum performance, the number of duty cycles can be reduced, ie. you are reducing the life expectancy.
    Also, as the battery goes through charge cycles, it will lose some of its capacity, a brand new battery will always hold more charge than one that is half way through its duty cycles for example & have better run times.

    Generally, I expect an 18650 battery to last me 2 yrs, since i rotate my batteries, charging one while using another, then swapping them in & out of the mod.
    In a single battery mod, if you are rotating 2 batteries, then you can roughly expect 2yrs use from them, if you are getting a full day's use from a charge.
    Take those same batteries, put them into a dual 18650 mod, with series battery connection (stacked) & I have found that this doubles the run times, so instead of the expected 2 full days use from 2 fully charged batts, I get 4 full days use. This means I am recharging them 1/2 as often, which in turn means I now expect those batts to last me 4 years, instead of 2yrs, because the number of duty cycles is still the same.
    This is why I now prefer dual battery mods over single battery mods, sure they are a little larger but in the long term they are saving me some money, not that I'll save enough to take a holiday or anything but it's still money saved.

    Running a mod in TC mode, will, I think, cause the batteries to run for longer, because the coil is only going to get the power it needs to keep the temperature constant(ish). When you have 40w set in TC mode, the mod only fires at up to 40w until the coil reaches the temp you have it set to, it then drops to a much lower wattage (10w or there abouts) & fluctuates to keep the temperature stable.
    So a dual batt TC mod, running batteries in series, is conceivably going to have your batteries lasting even longer than 4 years.
     
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