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David, do you ever sleep? heh, I get emails from you after 3 am and you reply to my emails at 6 am!!
So when the pro-vari gets rollin are you gonna take it out for a night on the town to snoqualmie casino so i can see it?
Sounds like a lot of work to mass produce. Last var volt mod I just did point to point wiring on blank pcb, fast to build not pretty but works well enough.
Is that where you work? I plan on taking it on some field trips...
With this mod being a 3.7 volt battery boosted to higher voltage how will that affect the battery life?
Hey Mark,
Great question.
It’s got excellent battery life. Here are some estimates.
While these will vary by user (some people will use it more, some less per hour and some take longer drags or shorter drags, etc... These are just estimates based on the mAh of the battery, element resistance, voltage to the element and efficiency of the converter. Once those 4 items are calculated we get a total run time in minutes (as if the button was held down constantly). We then calculate the constant run time and figure out about how many times a minute the average user will take a puff. There’s also some fluctuation in there because the battery will recover a little in-between puffs.
Well just figure in the average user, unless all of you are heavy vaporers?
The base ProVari can take a 18490 AW 1100 mAh cell.
Just for a sample, let's say we are using a 3ohm element at 4.2 volts - This comes out to about 12.68 hours.
3ohms at 4.5volts = 11.84 hours
3ohms at 4.8volts = 11.10 hours
3 ohms at 5.2volts = 10.24 hours
And if we crank it all the way up to 6.0volts (3 ohms) = 8.88 hours
On the other side, if you turn it down to 3.3volts = 16.15 hours
These will of course change depending on the resistance of the element. Lower resistance = less time. Higher resistance = more time.
Just for comparison, let’s swap in the big daddy 18650 that you can also use with the extension cap. This AW cell is a 1600 mAh.
3ohm at 4.2 volts = 18.45 hours.
3ohms at 4.5volts = 17.22 hours
3ohms at 4.8volts = 16.15 hours
3 ohms at 5.2volts = 14.90 hours
3 ohms at 6.0volts = 12.92 hours
And the 3.3volts on this one is 23.49 hours
The efficiency of our converter is running 95%, so very little energy is lost.
I know when most of you first get the device, your going to be on it constantly so maybe I need to redo the chart
First week with the ProVari – (HEAVY use)
Second week with the ProVari (HEAVY use)
Great question.
It’s got excellent battery life. Here are some estimates.
While these will vary by user (some people will use it more, some less per hour and some take longer drags or shorter drags, etc... These are just estimates based on the mAh of the battery, element resistance, voltage to the element and efficiency of the converter. Once those 4 items are calculated we get a total run time in minutes (as if the button was held down constantly). We then calculate the constant run time and figure out about how many times a minute the average user will take a puff. There’s also some fluctuation in there because the battery will recover a little in-between puffs.
Well just figure in the average user, unless all of you are heavy vaporers?
The base ProVari can take a 18490 AW 1100 mAh cell.
Just for a sample, let's say we are using a 3ohm element at 4.2 volts - This comes out to about 12.68 hours.
3ohms at 4.5volts = 11.84 hours
3ohms at 4.8volts = 11.10 hours
3 ohms at 5.2volts = 10.24 hours
And if we crank it all the way up to 6.0volts (3 ohms) = 8.88 hours
On the other side, if you turn it down to 3.3volts = 16.15 hours
These will of course change depending on the resistance of the element. Lower resistance = less time. Higher resistance = more time.
Just for comparison, let’s swap in the big daddy 18650 that you can also use with the extension cap. This AW cell is a 1600 mAh.
3ohm at 4.2 volts = 18.45 hours.
3ohms at 4.5volts = 17.22 hours
3ohms at 4.8volts = 16.15 hours
3 ohms at 5.2volts = 14.90 hours
3 ohms at 6.0volts = 12.92 hours
And the 3.3volts on this one is 23.49 hours
The efficiency of our converter is running 95%, so very little energy is lost.
I know when most of you first get the device, your going to be on it constantly so maybe I need to redo the chart
First week with the ProVari – (HEAVY use)
Second week with the ProVari (HEAVY use)
It might be better than the chart. An 14650 is rated at 1600 mAh, an 18650 can now get to near 3000 mAh.
IT will be better than that chart if you use hv atties. Although I'd argue that there's a difference between being rated at/near 3000mAh and getting it... at 2.5-3A load you're looking more like 24-2600 mAh with the best of em.- regardless of what device you are using it on. The price you pay for VV is the efficiency of the converter and 95% efficiency is as good as it gets (although I'd bet at 2-3 amps the efficiency goes down a bit)...
The other production VV devices using linear regulators (just about all of them) cant touch this number in terms of efficeincy.
Pulse with modulation is why I am so interested in getting one of these.
(But damn I got my feelings hurt when I didn't get picked to test one.
After all,,, I was the one that kept doggen on him to let us stress test them for him).
(But damn I got my feelings hurt when I didn't get picked to test one.
After all,,, I was the one that kept doggen on him to let us stress test them for him).
Indeed, the efficiency will fluctuate a little depending on modes and load conditions.
To be 95% efficient is about the best technology can provide, especially in this small a space. It takes alot of attention to detail to get a converter to run above 90% efficient.
Pulse with modulation is why I am so interested in getting one of these.
(But damn I got my feelings hurt when I didn't get picked to test one.
After all,,, I was the one that kept doggen on him to let us stress test them for him).
Sorry Gummy
didn't mean to.- Status
