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If there is rating, seems like it should be 3 ratings or rating at a specific setting.
Not really.
mAh ratings are taken at specific discharge rates, usually low and related to the the C rating of the battery, not on how you are going to use it.
Somewhat agree. But consider the different ratings of the Joye eGo (650) and the EM Riva (750). Those ratings would seem to have been affected by cut-off voltage as anode/cathode, basic batt cell inside shells are identical for the two with both indicated to be 2.41 Wh. It seems to be the case that for the VV eGo, it has variable cut-off voltages. Apparently a manufacturer that is not Joye. Statement of 650 sounds too pat to me. Thinking of the chart you provided at post #241 and the very low cut off voltage* of the low range of VV eGo, this batt might actually already be a 950 at low.
*2.52v to 2.76v not even on the chart.
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Should, but it's not uncommon they don't.
The actual discharge rate at which the discharge measurements are made is not a standard. Usually they are done at low discharge rates.
I think most are made for something like 5 hours. The results are latter adjusted for a 1 hour rating.
Tests made with different discharge rates will give different results.
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i didnt want to get involved with this whole volts mess but i did notice a few things with my first run vv ego. on high it hits the same to me as my unregulated box mod. 3.7v 14500 battery but it starts out at 4.22 volts and goes down from there as a normal unregulated box mod does. I was hoping the VV would be hotter with the same carto since its 4.2v on high and while it does seem to hit stronger than my other ego batts I am starting to believe that the high setting is open battery and the other 2 settings are pwm.
What promped me to post this was I have a tank with an led in it. on my epower and box mod the led is bright and solidly lit. on my regular ego batts the led flickers. very fast. so fast sometimes it appears almost solid.
now when i put this carto on my vv ego on the high setting it lights up solid. on the middle setting it flashes similar to the other egos but not as fast. on the low setting the led blinks much slower kinda like a strobe light. on all three settings the led was the same brightness when it was lit. in a normal vv circuit the led would simply get dimmer as the voltage decreased. since the led was never dim that leads me to believe the middle and low settings must be similar voltage but are pulsed to achieve the desired power output. which isnt exactly the same as VV (in a circuit) but is close enough to call vv for this application.
since the lower settings are pulsed wouldnt this throw off any calculations for mah or wattage use on these settings as the calculations are based on a steady voltage?
either way its darn good unit and if i wasn't already attached to it they way it is I would consider pulling the guts to put on a bigger battery. i saw a thread somewhere somebody put their ego switch on a 18650 battery in a pill container or something. didnt look too shaby and i would bet the vv circuit would really shine with the extra batt juice. not to mention it would last for days lol
What promped me to post this was I have a tank with an led in it. on my epower and box mod the led is bright and solidly lit. on my regular ego batts the led flickers. very fast. so fast sometimes it appears almost solid.
now when i put this carto on my vv ego on the high setting it lights up solid. on the middle setting it flashes similar to the other egos but not as fast. on the low setting the led blinks much slower kinda like a strobe light. on all three settings the led was the same brightness when it was lit. in a normal vv circuit the led would simply get dimmer as the voltage decreased. since the led was never dim that leads me to believe the middle and low settings must be similar voltage but are pulsed to achieve the desired power output. which isnt exactly the same as VV (in a circuit) but is close enough to call vv for this application.
since the lower settings are pulsed wouldnt this throw off any calculations for mah or wattage use on these settings as the calculations are based on a steady voltage?
either way its darn good unit and if i wasn't already attached to it they way it is I would consider pulling the guts to put on a bigger battery. i saw a thread somewhere somebody put their ego switch on a 18650 battery in a pill container or something. didnt look too shaby and i would bet the vv circuit would really shine with the extra batt juice. not to mention it would last for days lol
This is probably not a new thought but situation on mAh ratings begs for some meaningful rating and specifically for typical usage patterns for the e-cig user. Maybe a mAh number that is derived from discharge into some specified load (maybe 3 ohms or so) at patterns of (just a for instance) say 5 seconds on, paused 10 seconds, from a state of just off charger to the point that battery cuts out or perhaps to the point that battery voltage is less than some specified number with the specified number to be a voltage that produces unacceptable results for the "typical" e-cigger. To get to the cumulative mAh, voltage or amps would have to be measured at each "hit". Anyway, the number derived from such testing might then be called the "e-cig mAh rating". A rating from some standardized criteria with the criteria approximating "typical" e-cigger usage.
Back to the eGo vs Riva issue, the mAh's really "shouldn't" be the same. Quite deceptive if the mAh quoted come from an area of discharge of the basic cell that is not accessible to the device user - like mAh that derive from voltages less than cut-off of the device..
To me what you suggest (non-modulated at high selection, modulated at two lower selections) seems quite possible. I too notice a very noticable differeance between an eGo (modulated) and a Riva (non-modulated), just off charger. Also the voltage measurements that have been provided in prior post suggest the same thing. Those measurements do indicate though that batt is cut-off at 3.49 (if in high select), which would not be the case for a Riva or for e-power or box mod. But your comments and observations do tend to substantiate there is no boost with this device.
pbusardo couldn't get a voltage reading with one of the madvapes led meters, even at the blue setting, and that would suggest even that setting is pwm.
(I'll try to replicate that, since I have one of those also)
If it is, It definitely has a booster before.
As soon as I can, I'll take a look at the signal of the 3 settings with an oscilloscope.
(I'll try to replicate that, since I have one of those also)
If it is, It definitely has a booster before.
As soon as I can, I'll take a look at the signal of the 3 settings with an oscilloscope.
The center post needed to be lifted for it to work. On the highest setting it's the best combination I've found so far - incredible!!! The problem is the battery only lasts about 2 hours.
Just a little jibber jabber relating to the post. Two hours really doesn't sound bad to me. A dual coil is kind of like operating two single coils simultaneously so a halving of time as compared to a single coil - it seems - should be a reasonable expectation. It would also seem that the resulting vapor/mist would not be twice as hot as might be expected from halving the resistance but instead a greater volume of vapor/mist that one might compensate for by taking perhaps shorter duration hits. To the extent that one shortens the duration of each hit, the halving of batt time as compared to the single coil becomes less expected. But the doubling of the vapor/mist at less than scorching temperatures would seem to offer the vaper greater options to find that "incredible" vape without having to eat a burnt steak. JMO. I need to try one of those dual coils.
Seems possible it might be modulated at the high setting - just at a higher duty rate than other settings. But - if so - one would think the loaded voltage just off charger would be less than 3.9v. Instead some voltage close to the voltage at near cut-off. And if there was a boost of a modulated voltage, the range of voltages encountered in the other settings should have been present. Perhaps madvapers led meter fails because of modulating components in the circuit although effectively off at high setting? Short of oscilloscope, any AC readings picked up on multimeter at different level settings?
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ac reading is gibberish lol
if it was boosted and regulated wouldn't the unloaded voltages stay the same until the battery was discharged and cut off?
if it was boosted and regulated wouldn't the unloaded voltages stay the same until the battery was discharged and cut off?
You said it right: boosted and regulated.
The regulation part seems to be missing (or very weak) in the first version.
But then, we're only assuming they would be regulated...
As soon as someone checks the output with an oscilloscope or an RMS voltmeter, all will be clearer.
I'll do it when I have the chance.
The regulation part seems to be missing (or very weak) in the first version.
But then, we're only assuming they would be regulated...
As soon as someone checks the output with an oscilloscope or an RMS voltmeter, all will be clearer.
I'll do it when I have the chance.
from my understanding all the new ones hold the voltages better or boost better.
This company is good to us and stand behind their product and have improved it based on all your suggestions in a matter of weeks and that was impressive itself, the feedback form the new ego variable is really good and people are digging all the improvements.
there is many more surprises coming.
This company is good to us and stand behind their product and have improved it based on all your suggestions in a matter of weeks and that was impressive itself, the feedback form the new ego variable is really good and people are digging all the improvements.
there is many more surprises coming.
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