Sub-Ohm without the contact upgrade? Is it dangerous?
- Thread starter Cptfunpants
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This response is not meant to offend anyone here and if I have offended you, I apologize in advance...
The only coil that has been successful for me, (almost 3yrs now), has been a 1/16" tension wrapped micro coil and personally, I don't think I need a video to wrap one. It has been explained in detail all over the forum and would be hard, (imo), to mess up on. There are more people vaping a micro coil than any other coil out there.
I personally don't watch video's, but the ones I have watched were purely for information on a product and was either done by PBusardo or Todd. They gave me the info I needed and didn't waste my time. I tried watching one of Rip's video's once and never made it to the 2min mark!! Everything he said up to that point was useless, stupid, and a total waste of my time...imo... Half of the coil video's he has done, he actually thought they were all his concept, when purely they weren't. He still to this day has no idea what a true micro coil is!!!
AW IMR batteries except for the 1600 mah don't have a high enough current rating to support significant subohming. The lowest I'm comfortable going on my AW 18350, 18490 and 2200 mah 18650 is 0.8 ohms. Some have advocated lower, but I don't. AW batteries are much more commonly used in regulated mods than in mechanicals. Most people who are getting crazy with subohming are using Efest (20 amp continuous, 35 amp peak) Sony VTC5 (30 amp peak, 60 amp continuous) or some LG or Panasonic batteries, most of which have about a 20 amp continuous rating.
Download an ohms law calculator to figure out how many amps a planned subohm build will draw. Input 4.2 in the volts section, then the ohms, and the watts and amps will be generated as a result of those two variables.
DO NOT exceed the continuous draw rating of your batteries. Efest markets their batteries as a 35 amp battery, but they fail to mention that 35 amps is the peak rating. The local vape shop I frequent also fails to mention that as well. I only use Authentic VTC5's in my builds, and yes they're still out there, just hard to find. I'm fairly comfortable with ebay, but most people here aren't. Two of my VTC5's came from ebay, the other two came from RTD vapor back when they were in stock
The LG-HE series has been getting some attention on the forum too
Download an ohms law calculator to figure out how many amps a planned subohm build will draw. Input 4.2 in the volts section, then the ohms, and the watts and amps will be generated as a result of those two variables.
DO NOT exceed the continuous draw rating of your batteries. Efest markets their batteries as a 35 amp battery, but they fail to mention that 35 amps is the peak rating. The local vape shop I frequent also fails to mention that as well. I only use Authentic VTC5's in my builds, and yes they're still out there, just hard to find. I'm fairly comfortable with ebay, but most people here aren't. Two of my VTC5's came from ebay, the other two came from RTD vapor back when they were in stock
The LG-HE series has been getting some attention on the forum too
Okay, I think I have a basic understanding on how this works.
Ohm's Law Calculator
I enter 4.2 under voltage.
I enter my current/desired resistance (.5- ohms)
I press calculate and the resulting amps should not exceed that of my battery?
4.2 voltage at .5 ohms is listed at 8.4 amps which should be more than safe.
Does this all sound correct?
I have two new batteries (AW IMR 18650, 1600 MAH) arriving this afternoon.
Ohm's Law Calculator
I enter 4.2 under voltage.
I enter my current/desired resistance (.5- ohms)
I press calculate and the resulting amps should not exceed that of my battery?
4.2 voltage at .5 ohms is listed at 8.4 amps which should be more than safe.
Does this all sound correct?
I have two new batteries (AW IMR 18650, 1600 MAH) arriving this afternoon.
You want a safety margin so the resulting amps of the calculation should not exceed 70 to 80% of the batteries max continuous amp load. do not go by pulse rating.
So a 10 amp battery is little under 20% and a 12 amp or higher battery is ideal. and the 1600's at 24 amps are a great choice
Is the "Max continuous amp load" the same as the "max continuous discharge rating"?
if it is listed as a C like 15c, that is used to calculate the max amps load.
Take the mah divide by 1000
multiply that by the c rating to get max amp
for the AW 1600 it would be
1600 / 1000 = 1.6
1.6 x 15 = 24 amps
Yeah, you shouldn't be trying to meet or really come close to the max continuous rating
Samsung 25Rs are some really good batteries that outperform my VTC5s, although they are 'only' 20 amp continuous batteries.
Yeah, my goal is not to come close to the rating. I just wanted to ensure I would be safe vaping between .4-.6 ohms.
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