Ohm advice

[Denney Coning]

Is there a rule of thumb pertaining to battery size and ohms in a mech? For instance, to be safe if your using 18650 batteries don't go below _____ohms. 14900 ____ohms. Not that i am worried because im getting a kick2 with my new batteries, just want to be safe.

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[tj99959]

Yes there is, it's called the AMP RATING. I try to never exceed 50% of a batteries amp rating.
The battery I'm using ATM is an IMR 18490, which is rated at 16 amps. Half that would be 8 amps, which means I'm safe down to about 0.5 ohms.

Just understand that every type of battery of every size has a different amp rating. There are lots of 18650's that have a lower amp rating than that IMR 18490.

 

[Denney Coning]

Very cool. Thank you.

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[Baditude]

I'm assuming you're talking about sub-ohms?

Sub-Ohm Battery Chart

Ohm's Law Calculator

Battery Basics for Mods - has list of high drain battery amp limits

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If you are talking about factory-built coils, you won't have to worry about that stuff. You can either use the Ohm + 2 Formula (2.0 ohm + 2 = 4 volts).

Or use the Safe Vaping Power Chart.

 

[Denney Coning]

I am not sub ohming as a beginner, don't worry. The coil i had wrapped on my new trident clone is 1.0 and i am liking it but i don't want to sub just yet.

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[stylezuk]

The Kick 2 lowest ohm is 0.5 so even maxed out @15W the current would be aprx 5.48A but think that the Kick 2 pulls some of it's own amperage as has a max 8A draw, I'd advise not using 18350's with it and using AW18500 or many of the available Safe Chemistry 18650 with over 10A ratings.

 

[retired1]

Moved to Batteries and Chargers

 

[Denney Coning]

The Kick 2 lowest ohm is 0.5 so even maxed out @15W the current would be aprx 5.48A but think that the Kick 2 pulls some of it's own amperage as has a max 8A draw, I'd advise not using 18350's with it and using AW18500 or many of the available Safe Chemistry 18650 with over 10A ratings.

I can only use 14900 with the kick 2 in my mod. The 18650's make it about 2 threads too short.


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[tj99959]

I can only use 14900 with the kick 2 in my mod. The 18650's make it about 2 threads too short.


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Sounds like you have protected ICR 18650's. You will find that IMR batteries are shorter. There are also flat top batteries as well as button top.
As an example:
I have a HCigar Nemesis (combination edition) The 18650 tube is to long for IMR batteries, an ICR fits perfectly. With the Kick & kick sleeve the ICR's are to long, and the IMR fits perfectly.
There is a company called FatDaddyVapes that carries replacement contact pins for most of the popular mechanical PV's to resolve compatiblity problems.

 

[Denney Coning]

I have the Smoktech Natural Tele. Didn't know the IMR's are shorter. Those are what I have coming in 18650 and 14900.