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18650 question

Discussion in 'Batteries and Chargers' started by makeyourself, Sep 5, 2017.

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  1. makeyourself

    makeyourself Senior Member

    Jan 4, 2014
    United Kingdom
    Just wondering if the Efest IMR 18650 3500 mah batteries I was sold with a Sigelei Kaos Spectrum are acceptable to use for that mod?
    Allegedly these have a "max current" rating of 20A, not sure if that's a continuous discharge rating or not. The mod's manual advises using Sony/Samsung/LG 40W batteries, once again it doesn't say if 40W means CDR or not but I can't even find an 18650 with a 40W CDR.

    I'm only actually vaping at about 30W on a 0.5 ohm coil at the moment but seeing as the mod is capable of much more than that, I thought I should ask.
     
  2. Rossum

    Rossum Surly Curmudgeon Verified Member ECF Veteran

    Supporting member
    Dec 14, 2013
    NE FL
    This is a dual-battery mod right? If you're vaping at 30 watts on a dual-battery mod, you're only pulling ~6A from each battery. Sounds OK despite somewhat sketchy batteries.

    Now to get the full 230 watts from the mod, you'd need 40A batteries, and there there is no 18650 with a 40A CDR. There may be some re-wraps that claim they can do it, but that's BS.
     
    • Like Like x 8
  3. makeyourself

    makeyourself Senior Member

    Jan 4, 2014
    United Kingdom
    OK thanks for that, yes the mod is dual-battery. I was partly wondering what for instance happens if I forget to lock it when it's in my pocket and the + button gets pushed followed by the fire button resulting in it firing at 230W? Will some kind of protection kick in on either the battery or mod? Might sound like a remotely unlikely scenario by the way but something similar has happened in the past with another mod (which had a pre-installed non-removable battery).
     
  4. Izan

    Izan Vaping Master ECF Veteran

    Jul 1, 2012
    Mallorca, Spain
    Best practice:
    remove the topper/atomizer/tank before transporting, any accidental button pushes are rendered harmless.

    Cheers
    I
     
    • Like Like x 4
  5. sonicbomb

    sonicbomb Vaping Master Verified Member ECF Veteran

    Feb 17, 2015
    1187 Hundertwasser
    Mooch tested that cell a year ago and it was a 10 amp Panasonic under the re-wrap, but it could have changed since then.
    Efest Purple 20A 3500mAh 18650 Bench Test Results...just another rewrapped 10A battery
    If they are 10 amps then you are good up to about 55 watts.

    If you want to use higher power levels then that then you need some better batteries. Forget the rewraps and get original Sony, LG or Samsungs or Sanyos from a reputable dealer. I strongly suggest you have a read of Mooch's blog.

    Calculating battery current draw for a regulated mod | E-Cigarette Forum

    [​IMG]
     
    • Like Like x 6
  6. Rossum

    Rossum Surly Curmudgeon Verified Member ECF Veteran

    Supporting member
    Dec 14, 2013
    NE FL
    Right; you never really know what you're getting inside of a re-wrap like that.
     
    • Like Like x 2
  7. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

    Supporting member
    May 30, 2017
    Tucson, AZ
    Or, if it's easier to pop the batteries out and save on your 510 threading, you can take one out, a two battery mod won't fire with only one battery, to the best of my knowledge, at least non of mine have. You'd have to put it in a battery storage case, though, for safe battery handling. I'm not sure if that's more-- or less-- of an effort than unscrewing the tank while it's in the pocket, but either practice should help avoid this issue. I've you've had it once with a less powerful setup, I'm thinking you probably want to avoid it in the future. With that said, if pocket "room" is an issue, you don't really need to unscrew the tank all the way, just enough to get a short atomizer warning and the mod shouldn't fire, even if it's accidentally turned on.

    Best of luck, and I'd be inclined to get some fresh, branded batteries from reputable suppliers. Mooch's chart lists several at the bottom of the chart, in the blue portion.

    Anna
     
  8. Rossum

    Rossum Surly Curmudgeon Verified Member ECF Veteran

    Supporting member
    Dec 14, 2013
    NE FL
    Depends on whether the batteries are series or parallel. A mod that has them in series won't fire. A mod that has them in parallel will.
     
    • Like Like x 1
    • Agree Agree x 1
  9. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

    Supporting member
    May 30, 2017
    Tucson, AZ
    Hmm... good to know. Thanks, Rossum. I only have series mods, that's really all I need. I guess the screw off the atty head is the best fix, then.

    Anna
     
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