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**Sub-Ohm Vaping** Discussion, Safety, Battery Info, & Warnings

Discussion in 'Sub-Ohm' started by Technonut, Sep 8, 2013.

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  1. SingedVapor

    SingedVapor Super Member Verified Member ECF Veteran

    I'm so glad I found this. Lots of info learned already.

    Just a suggestion but have you thought about putting this or something like this also on the new members forum? A lot of the new members or people just browsing might find it easier, especially the ones who build without doing a lot of research.


    Sent from my iPhone using Tapatalk
     
  2. Aviationrich

    Aviationrich Vaping Master ECF Veteran

    Nov 9, 2013
    Amarillo
    Hey everyone, am I safe to say that a efest 18650 2000mah is 10 amps and to not go below a. 7-.8 ohm coil?

    Sent from behind the tree in your yard using instant pestering
     
  3. State O' Flux

    State O' Flux Vaping Master Verified Member ECF Veteran

    Jul 17, 2013
    Seattle
    IMO, plenty of room to spare actually. 0.7Ω at 4.2v is around 6 amps, and at a more likely 3.9'ish volts... 'cause 4.2 don't last for long, it's 5.5 amps. ;-)
     
  4. Aviationrich

    Aviationrich Vaping Master ECF Veteran

    Nov 9, 2013
    Amarillo
    Awesome thanks! I like being in the "your good to go" area than to close to the edge. I do have two vtc4s that I've been using more for that reason.

    Sent from behind the tree in your yard using instant pestering
     
  5. EddardinWinter

    EddardinWinter The Philosopher Who Rides Verified Member ECF Veteran

    Jun 13, 2012
    Richmond, Va
    I agree wholeheartedly.

    0.6 is my personal low limit on that battery.
     
  6. Aviationrich

    Aviationrich Vaping Master ECF Veteran

    Nov 9, 2013
    Amarillo
    What would be some good signs that I'm close to the edge on it? I have a .7 build now, which sounds like it would be fine, but if I mess up something what should I look for? I'm new to mech mods and just want to be safe. I'm not to best lookin guy, but I like my face where it is lol.

    Sent from behind the tree in your yard using instant pestering
     
  7. State O' Flux

    State O' Flux Vaping Master Verified Member ECF Veteran

    Jul 17, 2013
    Seattle
    For a beginning coil winder/mech user... it's hard to mess up if you:

    1. Decide what your target resistance is for the battery you have... or visa versa. See second sig line below, look up the Locust Ohm's Law calculator (or right here) and run the numbers. (I like it because it's clean and uncluttered)
    2. Build the coil on paper... see "Steam Engine" in first sig line below.
    3. Build the coil for real and confirm it's resistance with an "known accurate" meter. The deeper the resistance, the more accurate a meter is required.
    If you built the coil to spec, and you matched the battery maximum continuous amperage drain (also found in the second sig line link) to the coil... and again, visa versa, you can't hardly screw it up... unless you screw it up. :laugh:
     
  8. State O' Flux

    State O' Flux Vaping Master Verified Member ECF Veteran

    Jul 17, 2013
    Seattle
    Watch it now chief... you'll have me thinkin' I actually know stuff. That can only go badly. :?:
     
  9. EddardinWinter

    EddardinWinter The Philosopher Who Rides Verified Member ECF Veteran

    Jun 13, 2012
    Richmond, Va
    Looks like you know a few things, SoF.
     
  10. State O' Flux

    State O' Flux Vaping Master Verified Member ECF Veteran

    Jul 17, 2013
    Seattle
    Naaa... copied it all from the back of a Green Lantern comic, right under the X-Ray specs add. :p
     
  11. Newgmole

    Newgmole Senior Member ECF Veteran

    Mar 29, 2014
    Pa.
    Thanks Ezah !!!


    Awesome info.
     
  12. sandman97289

    sandman97289 Senior Member Verified Member ECF Veteran

    Apr 16, 2014
    San Jose, CA, USA
    Amazing info. I was a little scared about trying out a mech mod but this clears a lot up.
     
  13. Mr.Mann

    Mr.Mann ECF Guru Verified Member ECF Veteran

    Supporting member
    Dec 30, 2011
    All over the place
    Is this list going to be updated any time soon? Just curious.
     
  14. Icey

    Icey Super Member Verified Member ECF Veteran

    Jan 2, 2010
    Skokie
    Where is that chart based on from? The community or an engineer? Thanks for sharing this, I booked marked it :)

    So I tried the Ohm's calculator. For example:


    Efest brand IMR LI/MN Flat top
    3.7 v Amps 30 (and yes I have one in 35 amps too)
    Ohms on the coil reader: 0.7
    P (Power) = 22.81667

    That's the safe limit right?
     
  15. Icey

    Icey Super Member Verified Member ECF Veteran

    Jan 2, 2010
    Skokie
    Hell I'm curious too.
     
  16. FictitiousFreedom

    FictitiousFreedom Senior Member ECF Veteran

    May 3, 2014
    WV
    I love sub ohming! The only problem is that everyone is getting into it and if your the kind of person who just trys things without researching it can be dangerous because these batteries don't advertise their c rating on the battery. I actually had a girl that worked at a local shop lie to me when I first got into Mecha. She told Me that the higher mah the higher the amps. She was trying to sell me old laptop batteries with a super high mah. Luckily I research everything and found those batteries were only a 5c rating but it really pissed me off, I told her off the next time I went there. Other than misinformation I've had a great experience sub ohming. The lowest I've went is .16 which is safe on my vtc5s. It is a lil too hot for my liking I stick around .3. People keep safe.

    Sent from my PC36100 using Tapatalk 2
     
  17. Soundhunter

    Soundhunter Senior Member Verified Member ECF Veteran

    Sep 26, 2012
    Love Field
    0.7 coil on a 4.2 volt battery is drawing 6 amps at 25 watts = safe on that battery



    Sent from my iPad using Tapatalk
     
  18. DocHo11idaze

    DocHo11idaze Senior Member Verified Member

    May 25, 2014
    Cali
    I apologize in advance, the search function kind of sucks and is a bit easier to ask in a thread then dig through search results. What are the major differences between the sony vtc4 and 5? I got a few 5's on the way but may swoop up a 4 at a b&m as my new mod will be arriving tomorrow or Wednesday. I have some random battery currently from my kts kit that only reads "hgb18650 2200 mah",then "h1107b" below it. So is a vtc4 worth acquiring when having the shop rebuild my coils in my nimbus clone while waiting for the vtc5?
     
  19. Porksmuggler

    Porksmuggler Super Member Verified Member ECF Veteran

    Aug 31, 2012
    USA
    The main difference is the vtc4 is 2100mAh, and the vtc5 is 2600mAh, same limits I believe otherwise.
     
  20. Mr.Mann

    Mr.Mann ECF Guru Verified Member ECF Veteran

    Supporting member
    Dec 30, 2011
    All over the place
    Made a correction, but we all know what you meant.
     

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