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  1. R

    Can someone explain OHMS to a newbie?

    Only if you are using a fixed voltage device. If using a VV or VW device, and the Power (Watts) is not changed, battery life is unaffected by resistance. A great IMR/High Drain battery is around 0.02Ω and the worst "wouldnt even use it as a paperweight" batteries as high as 0.21Ω. Internal...
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    Stacked batteries and Amp Rating...

    It means that you cannot run below ~.6Ω on a SINGLE battery. The max discharge rate of the batteries does not change when run in series (aka "stacked"). What does change is the voltage. Now you will have 7.4v (nominal) instead of 3.7v. Now toss 7.4v and .5Ω into ohms law and you get 14.8A...
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    Need help picking the best battery for Sub Ohm Vaping

    I have been very impressed by them. In use for about a month now and ZERO complaints. I havent done any comparative measurements mainly because the only thing I have to compare to are some well used CGR/CH's....and the fact that I havent had the time or will to give all the brass contacts a...
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    Need help picking the best battery for Sub Ohm Vaping

    Yes, the Samsung INR18650's are safe chemistry. I'm not sure what you mean by the bold sentences, as the battery I recommended IS >10A discharge and holds over 1900mAh @ a 20A discharge rate. CGR/CH's are great batteries in the 10A discharge class. I used them exclusively until I retired...
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    How is the Govt shutdown effecting you?

    Saving the political views for the OUTSIDE section...How is the shutdown effecting your neck of the woods? I'm on Inspector-Instructor Duty at a Reserve Center and in one day all operations have come to a halt. Drill scheduled for this weekend has been canceled, Reserve Marines on TAD/TDY have...
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    Need help picking the best battery for Sub Ohm Vaping

    Samsung INR18650-20R -22A Discharge Current for your sub-ohm pleasure -2000mAh for long lasting vape regardless of resistance.
  7. R

    Tutorial - PERFECT .8 ohm micro coil with the darkzero coil jig

    1x4 scrap and a couple of screws...Not nearly as aesthetically pleasing though.
  8. R

    question about wattage, Ohms and battery time

    While my personal observation may not be directly relevant to the OP's question (that had already been answered by others), it does have relevance to discussion points that were introduced by other members. If the OP is concerned with battery life, electricity of one one piece of the pie...
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    question about wattage, Ohms and battery time

    :) Seems my work here is done. :) I will echo the performance difference between builds. I found that my battery charge life increased going from .7Ω to .5Ω. Granted this was on a mech mod and actual battery drain current went for ~6A to ~8A, but I was taking much shorter pulls to get the...
  10. R

    Battery Question

    TangFire is a sister company or at least a close relative to TrustFire, UltraFire, [InsertFalseAndMisleadingAdjectiveHere]Fire. Panny NCR18650B 3400mAh is only rated for 6.8A (2C x 3400mAh = 6800mA = 6.8A) If you are running them at anything over 7.5A you should throw them away. The PCB is...
  11. R

    AW IMR 18650 2000mAh burst limit.

    Power Tool | Application Chart at the bottom of the page.
  12. R

    AW IMR 18650 2000mAh burst limit.

    No need to assume, 10A IS the limit. Technically, it is a "5C" battery. 2000mAh x 5C = 10,000mA = 10A The link that dr g posted is a post made by the AW of AW batteries, Andrew Wong. The specs in that post are as accurate as you will ever find.
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    Efest 18650 or AW IMR 18650?

    A quote from earlier in this thread dated nearly 5 months ago... By that time I had already owned the batteries for ~8 months of use with VV devices and mechs with 1.5Ω-2.0Ω loads. I ventured into SLR vaping about a month prior to that post. 2 days ago I just retired that first set of 4...
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    Amp limit on AW

    Yes, the 18490 has a higher max discharge rate than the 2000mAh 18650 (slightly different chemistry). The 18650 2000mAh is a 5C battery vs the 15C 18490. The 1600mAh is also a 15C battery for a max discharge rate of 24A. The 18490 is just the little brother to the 1600mAh 18650. Only 1...
  15. R

    So.... can't even smoke in your car anymore on base?!? ...!!!!

    Related article on leadership... http://www.mca-marines.org/gazette/article/what-color-are-your-socks-it%E2%80%99s-time-leash-your-dogma
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    Voltage drop... I know what it is, but why is it important to consider?

    Sorry, I just caught the original version of your second post and missed the edit. I quit using 28g when I went below .7Ω. I like to keep at least a 3/4 wrap with the coil and change the wire size to suit. I've been using .5Ω's of 26g with #10 cotton crochet yarn on an IGO-L. I tried 2mm and...
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    Voltage drop... I know what it is, but why is it important to consider?

    This seems to be the main issue. You are already at maximum performance for the wick, reducing the voltage drop will only serve to make things worse. If the goal is intense vapor and flavor...fix the wicking and then you can turn up the power. You didnt mention the atty or wick that you are...
  18. R

    Switch on my Mech Mod is Heating Up?

    If you havent done any mods yet, take a look here... Modding the Sigelei #8 for maximum performance. You also might need to press the button with some sideways pressure so that the switch pin will contact the side of the switch housing. This lets the electricity bypass the small spring it...
  19. R

    What is this Battery? (OrbitronicNCR18650PD)

    The funny thing about reviews is that there is a human factor that plays a very large part in the review. I prefer tests. ;) AW 1600mAh vs NCR18560PD 7A (~.6Ω) First thing that I notice is the massive difference in voltage from the very beginning. Ever read the threads about voltage drop in...
  20. R

    battery okay to use?

    Yes, the entire outer housing is negative.