Lowest build

[CloudsLA]

Hi, I was wondering what's the lowest I could build on my mech mod without going past the amp limit on it. My usual build is a 24 gauge 5 wrap which comes up to around .3 ohms. I want to start building lower like for instance I wanted to try to do a 24 gauge parallel 5 wrap. I looked up ohms law but I guess it's kind of confusing to me but I'm pretty sure I'm not going past my amp limits.
Also I am getting a unregulated box mod tomorrow that I won off a giveaway and wanted to know what are the main advantages of the box mod besides the extended battery life. I know your amps don't double but is it safer to do lower ohms builds.
I use Sony vtc4s and the box is coming with mxjo's.

 

[Margate69]

My 5 wrap parallel 24 gauge coils clock in at .16 Ohm. Which is just to the edge of the pulse amperage of a standard 18650 IMR.

Vaping that close to the amp limit on a mechanical mod is dangerous. You have to be careful, be sure your mod is always clean, regularly check your connections, and make sure you have clear vent holes.

I don't recommend doing any of this without a lot of experience with electronics, building, and battery safety.

 

[Susan~S]

Everyone is free to set their own parameters, and I can only say what mine are.

I try to never exceed 50% of the CDR (continuous discharge rating) of a fully charged battery (4.2v). So with a 30A battery, that would be 15A. This Ohm's Law Calculator tells me that a 0.28Ω build is as low as I would want to use.

The reason that I place a 50% limit is because as a battery ages the mAh of the battery degrades. As the mAh degrades so does the batteries c rating (amp limit). So down the road, my 30A battery may only be a 15A battery.

 

[CloudsLA]

How long would you guys say I should keep my batteries for? How often should I replace them? My setup is a fuhattan with a dark horse clone.

 

[Margate69]

I test my batteries regularly to make sure they charge to 4.2 v, and never drop below 3.6 v before charging.

I replace them whenever they fail this test, or if I notice my battery tube is getting warmer than usual.

I don't really replace on a time limit.

 

[Baditude]

Hi, I was wondering what's the lowest I could build on my mech mod without going past the amp limit on it. My usual build is a 24 gauge 5 wrap which comes up to around .3 ohms. I want to start building lower like for instance I wanted to try to do a 24 gauge parallel 5 wrap. I looked up ohms law but I guess it's kind of confusing to me but I'm pretty sure I'm not going past my amp limits.

You know if you are going over the amp limit of the battery if your measured coil resistance (ohm of the coil) will pull more amps than the continuous discharge rate of the battery you're using. You figure this out by knowing the amp rating of your battery and by using an Ohm's Law calculator. You absolutely must have an Ohm reader to measure your coils.

Amp Ratings (max. continuous discharge rate) of High Drain IMR batteries

Explain It to the Noob: Ohm's Law Calculators

The highest amp rating for a couple of 18650 models is 30 amps continuous, most are only 20 amps, so no coil build should ever go below 0.2 ohms for a 30 amp and 0.3 ohm for a 20 amp battery. We ignore "pulse" discharge ratings because they are almost always overinflated and unreliable for our purposes. There are no batteries over 30 amp continuous discharge.

Purple Efest Batteries Not As Advertised

Batteries should be replaced when they begin to not hold a charge with reasonable useage. If you run your batteries hard, they won't last as long.

 

[hashtag]

I don't ever go below .25 on my 30A, I worry too much about my ohm reading being slightly off or something shifting. The gains just aren't worth the risks of trying to hit the max limit.

 

[sonicbomb]

Nobody has mentioned this yet so I will. Lots of people on ECF use this amazing piece of web-ware

Steam Engine | free vaping calculators