So it is declining as use cycle goes toward cut-off. Very surprised with red at 2.52V near cut off. If that is actual voltage of batt cell, seems that I have read that might put batt into deep sleep. Is the 2.52 - 2.76 a range encountered with multiple tests or variance in meter in read outs from meter at one testing?
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So it is declining as use cycle goes toward cut-off. Very surprised with red at 2.52V near cut off. If that is actual voltage of batt cell, seems that I have read that might put batt into deep sleep. Is the 2.52 - 2.76 a range encountered with multiple tests or variance in meter in read outs from meter at one testing?
actually we had the kit changed, we now have a exclusive kit for gotvapes.com, 2 lcd variable ego batteries, 2 matching color cones(not atomizer cones) and 5 peaces of the top coil clearomizers with blunt tip and extra mouth peace plus a charger.
Sagging as time goes by in use cycle. Not saying a bad product - have not tried. But seems clear no booster circuitry involved. High setting is, I believe, very close to what one would get with e-power model or actually a Riva battery. The 3.6v at "high" above does suggest a cut-off time earlier than a e-power or Riva batt. If it actually cuts off there it suggests the battery still has usable charge left. That is, use life has been reduced considerably compared to e-power. I would suggest that if test above should be repeated not to charge for one minute in last section. Usually 5 or 10 seconds of charge will return battery to operation - meaning test at that point is closer to cut-off voltage.
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yes many tests have been done and it does a pretty good job at keeping it levels and not dropping off as much as individual batteries at same voltages under load especially at 4.2
JW50, the voltage values were from multiple tests. In all, the bat had the same variation. And just to have some more "scores" to compare, here:
Vl (Ego VV @ 4.2V): 3.9V
Vl (Ego-T – 650 mah): 3.2V
Vl (Kusb – TR 14500 900mah): 3.86V
Vl (NoEgo – TF 14500 900mah): 3.85V
Vl - Voltage under load (3 ohms coil).
All bat's out of the charger. The Kusb is a mod that i did, it's "pure" mechanical, no circuits. The NoEgo is the 14500 version and it's regulated for the 3.7V.
The Ego VV (@ 4.2), near cut-off of the bat, has about the same V of a fully charged Ego bat. Size dif, Ego VV is about 2 cm long than the Ego (650mah), as for bat life (@ 4.2) just a bit under.
Vl (Ego VV @ 4.2V): 3.9V
Vl (Ego-T – 650 mah): 3.2V
Vl (Kusb – TR 14500 900mah): 3.86V
Vl (NoEgo – TF 14500 900mah): 3.85V
Vl - Voltage under load (3 ohms coil).
All bat's out of the charger. The Kusb is a mod that i did, it's "pure" mechanical, no circuits. The NoEgo is the 14500 version and it's regulated for the 3.7V.
The Ego VV (@ 4.2), near cut-off of the bat, has about the same V of a fully charged Ego bat. Size dif, Ego VV is about 2 cm long than the Ego (650mah), as for bat life (@ 4.2) just a bit under.
JW50, the voltage values were from multiple tests. In all, the bat had the same variation. And just to have some more "scores" to compare, here:
Vl (Ego VV @ 4.2V): 3.9V
Vl (Ego-T 650 mah): 3.2V
Vl (Kusb TR 14500 900mah): 3.86V
Vl (NoEgo TF 14500 900mah): 3.85V
Vl - Voltage under load (3 ohms coil).
All bat's out of the charger. The Kusb is a mod that i did, it's "pure" mechanical, no circuits. The NoEgo is the 14500 version and it's regulated for the 3.7V.
The Ego VV (@ 4.2), near cut-off of the bat, has about the same V of a fully charged Ego bat. Size dif, Ego VV is about 2 cm long than the Ego (650mah), as for bat life (@ 4.2) just a bit under.
It, as I see it, seems to indicate that the VV does not have that much regulation to it. The Ego-T at 3.2 above is no surprise to me as it is a PWM regulated batt. It will stay very close (IMO) to that 3.2 throughout is use life. NoEgo I think is just an unregulated batt (nothing wrong with no regulation). Perhaps possible that it is regulated but if so and regulated to 3.7 - batt life will be far shorter than others. Not familiar with Kush. Ego batt with its PWM is a difficult batt to make comparisons to. It is hard to really know what is being read by a voltmeter when reading a PWM output. Different meters read different things with PWM. On my meter I read 3.23 as the loaded voltage (loaded at 2.5 ohms) of a Joye eGo - very close to your 3.2 at 3 ohms. I think it would be interesting to see what kind of output comes from the VV eGo is observed on an oscilloscope. My feeling is it will be flat - suggesting that the VV eGo is getting its voltage reduction at lower settings from series resistance before the atty. JMO.
Thats just to much techy for me,lolol , like many have said ,its a great 3 stage device, gives you 3 different ranges that taper off as you use the battery and thats much more then what we where using before with just one voltage range on ego or riva style. For many people this is a perfect device to have with the ability to change the voltages up or down at 3 settings and see which works best for the carto or atty used.
I don't disagree. But (IMO), for the first time starter/user, complexity that is not needed. A great deal of "variability" can be obtained with variable resistance, probably another complexity that should be avoided at the starter stage. But for those that have become comfortable with vaping - many of us probably like the new toys to try out and this one looks like one deserving of a trying out. JMO.
oh i agree as well and even though we try to walk the line of beginner versus exprerinced use carefully we try to make both happy like the way we carry high volt options for ce2 deluxe, vortex and sapphire and dual coils, at the same time we cant ever forget so many are just starting out and the simpler the better.
But no worries in a few months the modders dream will arrive and that side of the fence will be more then happy.
But no worries in a few months the modders dream will arrive and that side of the fence will be more then happy.
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I look forward to the "dream" I am also looking forward to the sapphires that I have ordered. It won't be long. But here is a video that gives an idea of the "anticipation" of that new toy: Vapin Mailman Blues (Preview 2) - YouTube.
JW50, i wouldn't say that it's regulation, but more like "boosting". At the lower modes/V's it really varies alot but at 4.2, it does a good job on "fixing" the V, better than the Ego (imo). But it would be funny to have it under the oscilloscope. From the values i got when testing it (with a DT-64 multi), usually, the values would vary (from max to min) a bit fast, other times, very slow. Looked like a sine wave with different frequencies (i guess).
The kusb is just a simple 3.7V (14500) box mod that where i've included a usb port for 5V. It was just to compare it with mechanical devices.
The Ego bat was a JETS one, and with the same multi i get from 3.2V flat to 3.3V.
Now, on the novice part, i don't think that the Ego VV is somewhat complex. It's kinda those led lights that have 3 modes too. Just say, low, med and high lol . Even for med-long vapers, i think it's a good device (comparing with the ego of course), but it's always a personal preference. For me, the Ego VV really "replaces" the Ego, but i mainly use it at 4.2V lol
btw, nice song, it's you/yours ?!
The kusb is just a simple 3.7V (14500) box mod that where i've included a usb port for 5V. It was just to compare it with mechanical devices.
The Ego bat was a JETS one, and with the same multi i get from 3.2V flat to 3.3V
.Now, on the novice part, i don't think that the Ego VV is somewhat complex. It's kinda those led lights that have 3 modes too
. Just say, low, med and high lol . Even for med-long vapers, i think it's a good device (comparing with the ego of course), but it's always a personal preference. For me, the Ego VV really "replaces" the Ego, but i mainly use it at 4.2V lol btw, nice song, it's you/yours ?!
Seems to have some sort of hibrid circuit.
- Boost at Blue setting - (I only say boost because the readings are a little higher than a normal 3.7V cell.)
- (probably) boost + pwm at purple setting
- pwm (or boost + pwm) at red setting.
The purple and red should definitely be using some sort of pwm, since the readings on a multimeter keep changing. An rms reading should be more accurate.
The blue setting readings are constant, like a flat DC.
The end result and user experience is that at the Blue setting the performance of this device is very, very nice.
The other settings should be useful the ocasional stuff with too low resistance to use comfortably at the blue setting.
- Boost at Blue setting - (I only say boost because the readings are a little higher than a normal 3.7V cell.)
- (probably) boost + pwm at purple setting
- pwm (or boost + pwm) at red setting.
The purple and red should definitely be using some sort of pwm, since the readings on a multimeter keep changing. An rms reading should be more accurate.
The blue setting readings are constant, like a flat DC.
The end result and user experience is that at the Blue setting the performance of this device is very, very nice.
The other settings should be useful the ocasional stuff with too low resistance to use comfortably at the blue setting.
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I truly feel this replaces a regualr ego battery, not selling the thing here but it does alot more then a regular ego, gives you 3 ranges to play with and the lcd is a plus to let you know where your at battery wise. For the same price range of regular batteries I think its a winner.
Its a great starting point of whats to come, it changes form here i think, who doesnt want the same size ego battery(yes these are longer) as what they are used to in the ego family but with more features that actual work and benefit vapors. I personally love the ego and all of its kinds, its the middle ground of size but always we had to choose between 3.2 or 3.7 riva or 4.2 ones, now we have it all in one.
Its a great starting point of whats to come, it changes form here i think, who doesnt want the same size ego battery(yes these are longer) as what they are used to in the ego family but with more features that actual work and benefit vapors. I personally love the ego and all of its kinds, its the middle ground of size but always we had to choose between 3.2 or 3.7 riva or 4.2 ones, now we have it all in one.
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Guessing here, but out of the gate you'd get about a third less battery life out of a 650 mAh battery at the same voltage. The extra voltage isn't free, so if you crank up the volts you're gonna lose even more. I'd be surprised if the thing lasted much more than half as long at 4.2v as the 900 mAh would at 3.2v.
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Generally, yes, but the mAh rating is not an absolute measurement of the amount of energy stored in the battery.
It's an approximation of the amount of discharge current a battery can sustain in an hour, usually derived from discharge tests made at much lower currents and over longer periods of time.
Since different vendors use different conditions for their discharge tests, 650mAh can actually mean very different things for different suppliers.
I generally agree with your comment. "Energy" would ordinarily be measured in watt-hours whereas mAh is a measure of power. Perhaps of interest, a Joye eGo within its outer shell has a cell that is labeled 2.41 Wh. This for the eGo that is sold as 650 mAh. Now 2.41 Wh is 2410 milliwatt-hours and most Li-ion bats are said to have a nominal voltage of 3.7 volts. 2410 divided by 3.7 is 651 - units of mAh. It turns out that a Riva battery of similar size and shape to the Joye eGo 650 mAh batt, sold as a 750 mAh batt, has the very same cell inside its shell. That is both have cells labeled as 2.41 Wh but one is sold as 650 mAh and the other as 750 mAh. Using the above calculation as guide, the Riva batt would have to have a nominal voltage of 3.11 v for it to produce the 750 mAh claimed. However, I think it is just coincidence that 2410 divided by 3.7 turns at to be close to the 650 mAh claimed. The 2410 mWh numbers is perhaps a more meaningful number than mAh but to make meaning of it - again more details would be needed.
From What is the C-rate? – Battery University
and from different section of Battery University this:
and this from yet another section:
What seems to be the case for eGo vs Riva is that the cut-off voltage is higher for eGo. It makes some sense that its mAh number is lower. That is, when the eGo cuts-off, more "reserve" remains in the batt than is the case for the Riva and fewer of the total mAhs is available for actual use by the user.
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Note at post #220 that cut-off voltage of the red is as low as 2.52 v, close to the 2.5 mentioned in the Battery University extract above as a "sleep" condition. My voltmeter shows that a Riva cuts-off at about 3.05 volts (loaded with 2.5 ohms) and a Joye eGo at about 3.23 (also loaded at 2.5).
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