OMG VV tech info/review
It arrived today, have already gone through 2 battery changes, so have enough gathered to give an early review and some observations. Unit is technically 2 pieces, the battery tube and the controller head. When it arrives comes in one piece. Included is a blue protected 1600mah 18500 batt, and a universal charger that in the manual states can switch to us/world automatically without issue. Tested this pv with a nipple top efest imr 18500 batt as well on the second go round.
Will first go into the charger, it's much like the one shipped with the OMGad only it's rated for 450ma. Took it 217 minutes to charge from when the device cut off (3.2v), and final off charger voltage was 4.22v. Haven't tested this with an imr battery for charging, but have a feeling it shouldn't be used with them either just like the OMGad charger.
Next item we'll touch up on is the screen itself and some of the options on it. As Dirtay J has pointed out, when you click it 3-5 times quickly (say 3-5 because sometimes mine will shut off with only 3 clicks, others 5, same for the on function) it says "Goodbye, My Master". Every time you hold the button down for more than .4-5 seconds it registers as a puff. Nice feature, except have noticed two quirks. At puff 166 on my first charge reset to zero out of nowhere (voltage didn't change), and did it again on puff 211 after that. With the second batt reset at puff 146, again on puff 163, and again on puff 213. The other quirk was when testing the cut off afterwards the screen would be garbled with every click, and it didn't fix itself until left sitting for about 4 minutes. Date and time can be set with enough clicks of the minus button to bring up the screen, but if you take more than 8 seconds to change the battery it loses it's memory, or if you have to do a hard reset (will get into that later). Some will reset it every time, personally don't see a point. The minutes used feature is another feature it has, but simply doesn't work on mine. The battery indicator comes up every time with the puff count in cell phone style measurement, so no way to know the actual voltage of the batt, but it does automatically cut itself off when the batt reaches 3.2v (3.22 on the protected batt, 3.21 on the imr were their respected cut off voltages). Adjusting the voltage is easy, hit the plus or minus button under the screen. Power button is on the other side and has been very responsive thus far.
With vv devices there are 3 major factors you're looking for- durability, accuracy, and amp limit. Will touch on two of those three today because durability is something that 9 hours of use just doesn't answer. Will be abusing it over the next few weeks and report back how it holds up.
Before I touch on anything else, these tests were done with a self powered multi-meter and a special adapter I've made for such testing. I do not use in-line voltage testers some vendors sell for a very specific reason, on a vv device yes they will tell you the voltage on it to an extent, but remember where the inline tester gets it's power from, the pv's battery. This can lead to false results. If you have one use it as a guide, not as an end all be all testing device.
Accuracy though is simple, does it provide the voltage it says it does. There is only one vv on the market that is spot on everytime, no matter what the charge on the batt, not expecting that at all from this device. The best lavatube on the market is still +.2-3v at full charge, .1 +/- after 4.01v on the batt, and once the battery hits 3.45v it's -.2-.4v (numbers taken from on and off load voltage). With the OMG vv with a full charge on it's shipped battery was .1v higher than the voltage selected all accross the board. With the imr batt I used on the second charge, again .1v over off load accross the board. This continued over the entire charge of both batts. On load was a different story (used a 3.3 ohm cool cart for this test so all voltages would be available, will go into that in the final part). With the supplied batt at full charge the voltage was +.1-.2v, after the batt hit 3.99v was -.1-.2v, and at 3.45v was -.3-.4v. With the imr voltage was +.2v at full charge, +/- .1v after the batt hit 3.99v, and -.2-.4v after the batt hit 3.45v. There was more accuracy with using the imr batt than the supplied, but remember the imr also has less mah (1100 vs 1600) so won't last as long.
Lastly comes the amperage limit. This controls how much voltage the OMG vv will actually put out. Higher the amperage, higher amount of voltage can be used on lower resistance cartos. Some vv pv's have an error code to telling you when you've gone past it's limit (provari and vmax being the first two to come to mind), you have to lower the voltage before you can vape. With the OMG vv it doesn't tell you you've hit your limit, just won't supply any more voltage than what the limit is (just like the lavatube). According to Wader sir it's a 3.0a limit on these pv's. Mine topped out at 2.8a. With that 3.3ohm cool cart could use every voltage without issue, even at 6v it's only pulling 1.81a. With a 2.3ohm wow carto didn't experience any voltage limiting. With a 2.0ohm dc tank though, a completely different story. No matter what I had it set to past 4.3v, 4.32v was all it would provide (was pulling 2.77a at that voltage). With a 1.5ohm dc anything over 3.9v didn't matter, 3.87v (pulling 2.76a) being it's voltage limit. Didn't matter what battery I used, the imr or the protected, same exact results.
Will finish with the other known quirks, twice did the pv just completely cut off on me for no reason. After removing the head unit for 10 seconds (or battery) came back on without issue (save all the settings went bye bye). If you hit the plus minus buttons while vaping, it can sometimes cause the screen not to function for a few puffs. Mine only came with the one adapter (two holes), not with it and the three hole adapter (like newb sir).
Will update this as the torture testing begins....
Thanks for the comprehensive information, Morandir, very informative. Which is actually quite amazing, because I understood quite a lot of it :confused:. Clearly I spend too much time on the forums, because I no longer zone out when confronted with technical information. Having my own VV devices has helped a lot, but mainly because you (& Snowdragon) have been so patient & gentle with we unscientific people.
I look forward to reading the results of the abuse. Let the torture begin....
Thanks morandir sir. Your review combined with the other 2 users we are 3 for 3 with quirks it seems. none total fail but would seem annoying. I will be waiting on picking up my 1st VV device for now. Was going to go here but am leaning elsewhere at the moment.
Thanks Morandir. Will be watching for further testing results. As always, we appreciate your results and unbiased approach to testing.
Mr. Morandir, Thank you for sharing some of your findings with us. I'm not a very technical person either, so I value your findings!
Great posts. I was wanting to get the OMG VV but was waiting until I could actually use some of the big sales on them.. Regardless I think ill wait until some of the bugs are fixed.
Thanks for your usual in-depth testing and results. Hope you have better luck with this than others I've seen :( From what I've read from others who are not nearly as thorough as you, it is very glitchy.
Thank you Mr. Morandir for all the time you spend doing this intensive research. Mercy.
Thank you for the detailed information Morandir sir! It is much appreciated!
Lol Katz! I know what you mean ;-)
Sent from my phone using Swype...nuff said