Is This Safe?

[TheVapingJester]

I have an MVP V2 and have been building coils for a Phoenix style rda. I wanted to try building 2 coils, one above the other just to see the results. Well, it vapes awesome! Huge clouds with tons of flavor! But, when I check the ohms it says .9 which I was under the impression that it shouldn't even fire on an MVP, but it does. Is this a safe setup for the MVP? It's an awesome vape, but not good enough to blow my face off!!!!

 

[asdaq]

Yeah, you are OK. Many devices 'cheat' and do not provide an output that would exceed the devices limitations, or, 11W. PhilB documents this here, cued to the goodies:



My only concern is that the battery is non-user replaceable (although those Torx screws do rather tempt me) and that you may be hastening the end-of-use cycle on a $70 battery rather than a $5 one. But, it wont last forever anyway.

edit: if the cueing is not working for you then skip to about 12:45.

 

[TheVapingJester]

Thanks for the reply. I may take a few toots with this setup, but I have been doing some research on mechanical mods so I may just wait until I get SAFELY setup on something with a less expensive removable battery to rock this thing. (the k101 deal for under $34 including batteries and charger is awful tempting) I have had my MVP for about 3 weeks and the unit serves me well, so I wanna keep it going as long as I can. So, next question. If I was to wrap the dual coils with more wraps to bring the resistance up to 1.2+ ohms, would this also shorten the battery life like the .9? I still get confused about that. It would seem that it would take more energy to run current through 2.0+ ohms resistance versus 1.2- ohms resistance, so why is lower resitance more taxing on the battery life?

 

[asdaq]

Well, I=V/R, where I= Amps needed from the battery. By lowering resistance, you are dividing by a smaller number that gives you a larger figure.

If you take a 4.2v battery and a 2Ω coil, the battery needs to deliver 2.1A

A .4Ω coil with that same battery needs 10.5A.

There is a water analogy too, but somehow I don't like it so much, especially if one adds seashells to the circuit.

Electric Circuits: a Water-in-Pipes Analogy - Windows to the Universe