Power, resistance and current calculator

Power, Resistance and Current Calculator

Welcome to Vaping Hardware’s Power, Resistance and Current Calculator!

When building your own coils, its important to know the final resistance of your build, the power you’ll be vaping at and the current you’ll be drawing from the battery.

Fortunately, we’ve done the hard work for you!

Just enter the voltage of your battery (a fully charged battery will read 4.2 volts), the continuous discharge rating of your battery, the resistance of your coil(s) and the build deck configuration. The calculator will then confirm whether the setup you’re planning to vape with is safe for use.

Please note: The Current Drain from Battery result must NEVER exceed the amperage of the battery you’re using, otherwise you may overheat the battery and it could even explode! Don’t worry though, if the setup you’re using isn’t safe, our calculator will display a safety message.


Input Battery Volts  volts
Current Rating of Battery (CDR)  amps
Coil Resistance  Ω
Build Deck Configuration


Resistance of Build Deck
Vaping Power
Current Drain from Battery

Thanks for using our calculator! If you have any questions feel free to comment below. If you’d like to share this calculator then hit one of the share buttons below. Happy Vaping

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Comments 2

    1. Post

      Hi Jan,

      Thanks for the comment. While we don’t specifically mention single/dual batteries in parallel or series configurations, our calculator will still work out whether the drain being placed on the batteries in these configurations is safe. All you need to do is work out the total voltage and amps in the configuration that you’re using before using the calculator for the final result.

      Our guide on ‘Series and Parallel Vape Batteries‘ should certainly help you to calculate the voltage and amps you have with the configuration you’re using. We hope this helps and if you have any problems feel free to get in touch 🙂

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