Official ProVari Radius Thread

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AstroTurf

Happy to be... Not Smoking!!!
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Happy to be... Not Smoking!!!
This too

9c4odyKni.png


R
Dots and circles?!?

What does it mean?


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JohnD0406

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Safe numbers meaning, how high of wattage & Amps and how low should it fire in Ohms? ;)

In a regulated mod, you have to talk about amp limits for both the battery and the board. Resistance of the atomizer is irrelevant to the number of amps drawn from the battery. A 1-ohm atty and a 0.1-ohm atty draw the same current from the battery, at the same wattage setting. However, the lower the voltage in the battery, the higher the current draw, at the same wattage setting. As volts go down, amps go up to maintain constant wattage.

Everyone who does calculations based on 4.2V is missing the point (even in a mechanical, where voltage sag due to high current demand means NOBODY is firing at 4.2V on a fresh charge). The battery voltage you need to be using for your current calculations, based on your wattage setting in a regulate mod, is the mod's battery voltage cutoff voltage.

As I mentioned earlier, with a 3.3V cutoff, 60W will pull about 20A depending on mod efficiency, so 60W is the limit for most high-end batteries. Now if the modder set the low voltage cutoff higher, you could go beyond 60W to reach 20A, but battery life would be pretty bad. These are the decisions the modder needs to make - longer battery life with a lower wattage rating, or shorter battery life with a higher wattage rating to keep it relatively safe.
 
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