Question about ohms

[HaidaMan]

I have the aspire Nautalis mini on an iStick mini (variable voltage only), and the coils say 1.8 ohms and 4.2 - 5 volts, however on all the ohms law charts they say the optimal voltage is 3.7 to avoid burning juice and anything over 4.2 volts can burn the coils.

Do those charts only apply to those who are building/rebuilding? I get the best flavor and vapor on one of my favorite juices (100% VG) at around 4.2-4.5 volts.

Can someone give me the cliff notes on the whole ohms law thing. You know, the ohms/voltage for dummies version? Is 4.4 volts too high for my set up?

 

[DoctorJ]

I use a Nautilus Mini as well and I vape at or around 4 to 4.4 volts all the time. That chart is for more of a suggestion for "optimal atty life". It's cool to use it that high. I've never had any problems. Just make sure to wick the atty really well before using. If I vaped at 3.7 volts I'd hardly get any vapor at all. Plus with the high VG I do believe that a higher voltage is called for, or lower voltage. Not using high VG I may have that part backwards.

I can't address the Ohm's law thing other than regurgitating the mathematical equation.

 

[Bunnykiller]

that chart was composed when the hi tech units were Egos and tanks were CE2's... the chart needs an update to cover the subohm and 200W units

 

[proteckt3d]

Use this calculator and the heat flux numbers in the results window are a great feature to get a good idea of the heat coming form the coil you have or make.
Coil wrapping | Steam Engine | free vaping calculators

 

[Fit_Four_Life]

OP, im pretty sure I have seen the same chart you are referring to. When I looked at it according to my setup, subtank mini running coils from 0.6 ohms to 1.2 ohms, the recommended ideal voltage range is too low for ideal vaping in my experience.

 

[Susan~S]

Do those charts only apply to those who are building/rebuilding?

If you are referring to the "Safe Vaping Power Charts" you have seen they no longer apply to any of the equipment most vapers are using today. Most builders never used them, even 4 years ago.

 

[Darth Omerta]

(14) Ohm's Law for Dummies (Vapers) | E-Cigarette Forum

That is about as close as it gets to the "cliff notes" on Ohms law and how it relates to vaping. Its a very easy and informative read. Hope that helps!

 

[suprtrkr]

You're fine at 4.2 volts on that setup. It's within the coil manufacturer's recommendation and the mod's capacity. At 4.5v, however, that tank is drawing over two amps and making over 11 watts, which exceeds eLeaf's spec of 10 watts. Honestly, I don't think that's a serious safety issue. It may shorten the life of the mod's electronics, but it isn't likely to blow up, IMHO (YMMV, at your own risk.) If the mod's not getting uncomfortably hot in your hand at 4.5v, I don't think you have a real issue. Most Li chemistry batteries can handle that kind of discharge rate except for tiny ones; the limit is probably on the electronics board. You might want to upgrade to the iStick 20, or even the MVP 2.0, the latter being an 11 watt mod, and both admittedly being larger than your Mini. Neither are expensive, having been supplanted by newer and more powerful models. And VW is very nice, compared to VV. Just a thought.

EDIT: I'm on my tab, and can't link you, but you'll find a nice calculator at ohmslawcalculator.com

 

[HaidaMan]

Wow guys, thank you all SO much. So why all the charts if no one is using them anymore? Google archives? lol Just one more thing to confuse me.

 

[opticruby]

Wow guys, thank you all SO much. So why all the charts if no one is using them anymore? Google archives? lol Just one more thing to confuse me.

I guess nobody has ever bothered to delete them your right though there are lot of them still floating around.