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Tutorial: Ohms Law and Vape Safety Calculator

Tutorial: Ohms Law and Vape Safety Calculator

Overview of Ohms Law Calculator and Vape Safety

Mechanical mods, high wattage regulated mods, rebuild-able dripping atomizers and rebuild-able tank atomizers are becoming extremely popular. Most experienced vapers quickly realize the cost savings of rebuilding and make simple RDA's / RBA's and RTA's part of their daily life. It's no surprise - for the cost of a pack of coils you could buy a year supply of kanthal wire and organic cotton - the building blocks of most vape coils built today. Additionally, self build coils in RDA's tend to produce a lot more vapor and superb flavor over traditional coils, but this post is not about that.

This post is about vaping safely and what that means. And of course out free vape calculator. Let's face it, a metal tube with a high voltage battery or a high wattage (think 150W) box mod with two is nothing to smirk at. You are putting that thing right next to your eyes, mouth and face and firing (activating) it. You WANT to be safe! Before building your first coil, it is highly recommended to buy an ohms meter. This is a device that will tell you the resistance of the coils on your atomizer. Armed with resistance (Ω) you will be able to easily figure out if your setup is safe. But first, what exactly is "safety" when it comes to mods and e-cigs? Easy, the batteries used today for most mechanical and box mods are either 18650 or 20700 series batteries. These batteries vary in Amps - amps are batteries' ability to discharge stored energy (current). When a battery is pushed above its limits, the battery can vent, which means hot chemicals exit the battery under very high pressure or the battery could blow up. Yep. It's as scary as it sounds. That's why you should never push a battery beyond its capability. You should always check the resistance of your coil and calculate the amps the coil will pull from the battery, using either the volts for mechanical mods (4.2 for most 18650 and 26650 batteries) or watts you will set your box mod to. Sub-Ohming is easy and can be done safely, as long as you follow the simple guidelines above. For those of us not in favor of doing the math on our own and converting ohms to watts in your head, we built a handy Ohm's Law Calculator in our signature easy to understand style. Notice, each variable is color coded to represent a piece on the mod below.

Vape Ohm's Law Calculator

To use the Ohms Law Calculator to ensure vape safety, enter any two variables in their respective boxes and hit calculate. If the AMPS value comes out higher than what your battery is rated for, adjust either Ohms on your coil build or wattage output on your box mod. Be sure to check out vape ohms chart in our Variable Voltage and Vaping Power Chart Tutorial.

Enter any two variables

Vape Ohms Icon
Vape Amps Icon
Vape Watts Icon
Vape Volts Icon
Vape Arrow Icon

For the mathematically and scientifically gifted out there, Ohm's Law defines the relationship between power, voltage, current, and resistance. The various possible formulas for Ohm's law are as follows. But if you are feeling lazy you can always default to our vape coil calculator for quick and easy number crunching.

Vape Ohms Law Chart Calculator

 

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Comments

Mouhin - November 4, 2018

How many watts can I run 0.36ohm quad coils

Kevin - November 4, 2018

I have voopoo drag mod and drop dead rda. And i use fused clapton 26g qt .5 ohm reading is it safe?

Jose mejares - November 4, 2018

I used vtc5 imr 18659 2800mAh

Rommel - November 4, 2018

Planning to buy vgod pro mech 2 what is the safe ohms for it???newbie here

Jomar - November 4, 2018

I use aegis legend 200w coil o.17 volt 3.16 ..firing 60w .. this is safe?

john adrian - June 7, 2018

what best battery for Sob

Dawson Smallwood - June 7, 2018

Can i use a 0.21 coil on a pulse bf box with a samsung 25r battery

Roland - June 7, 2018

can I use a DC converter with an output current or 2a on a vape mod that I am building?

Aelish - June 7, 2018

I have ohms at .18 on a variable mod. Is it safe?

coxy - March 22, 2018

To work out the amount of AMPS you are drawing from your battery you need to use this one simple equation;

I = V / R
Where ‘I’ is current (AMPS), ‘V’ is voltage and ‘R’ is resistance.

A fully charged ‘vape-safe’ battery will hold 4.2 volts. So if we have a coil that we have built at 0.5 ohms we can work out the equation as:

4.2(V) / 0.5 OHMS = 8.4 AMPS
So we can see that if we have a battery with a 25AMP rating like the Samsung 25R, we are well within the safety limits for firing this 0.5 OHM coil.

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