Joyetech Evic VT 60 Watt

[TheotherSteveS]

So did joyetech lie about the 5000 mah capacity? if that is the case, I'm extremely disappointed in them ( ..
On another note, can you change that ridiculous Fahrenheit to Celsius?

to what do you refer? Pretty much every pic I have seen of the vt has T in celsius...and if it is 3x1500 mAh then they have been telling little fibs Very poor!

 

[swatsqad]

to what do you refer? Pretty much every pic I have seen of the vt has T in celsius...and if it is 3x1500 mAh then they have been telling little fibs Very poor!

Yeah, I expect quality from joyetech... this reminds me of the nvidia's 970 vram issue, where really its 500mb less ... Mine reads in F bought it here in the UK, I believe there should be a way to change it? my firmware version is 1.18

 

[Hanha]

Yeah, I expect quality from joyetech... this reminds me of the nvidia's 970 vram issue, where really its 500mb less ... Mine reads in F bought it here in the UK, I believe there should be a way to change it? my firmware version is 1.18

Jsut go past the highest Fahrenheit and it goes to Celcius

 

[JeremyR]

So... this device has lipo batteries. Are those better than 18650? Are those lipo safe?

Way better than 18650.

Uses a similar battery to millions of cell phones, are they safe?

 

[swatsqad]

Jsut go past the highest Fahrenheit and it goes to Celcius

Thank you a million! such a simple and practical idea! Nowhere was it specified in the manual though.

Way better than 18650.
Uses a similar battery to millions of cell phones, are they safe?

LiPo batteries are definitely more dangerous, especially when compared to the super safe liions like the sony vtc's.
Lipos won't explode, like some older Lithium ion batteries can, but they will burst in to flames. that is the reason why I chose a white evic VT, just in case I leave it in the sun for too long, just gives me that extra tiny feeling of safety.

 

[Carnage9270]

well i have to agree with u on this. That's why we use lipo battery with our RC car, better power and punch. If a lipo batter fully charge and did't use for long time, the battery juice still there when ever u use it.

These are not the same lipo packs you would use in your rc car. Rc lipos are high output batteries and use a slightly different method in manufacturing. These lipos do not have as high of an output as an rc lipo. Keep in mind, with rc lipos, you don't want to leave the batteries at full voltage very long or it damages the cells. These batteries do not have that issue, they are slightly different. The discharge curve on these cells cannot just be called 'better than an 18650'. There are plenty of lipo packs out there that have a much worse discharge curve than an 18650. There is a reason rc car batteries typically cost more than this entire mod brand new. Different application of lipo technology that requires a tremendous discharge rate. Our mods would melt at the discharge rates an rc touring car can pull and these batteries would melt trying to provide that kind of current.

 

[damped]

@BNEAT I noticed mine lowered the resistance and it didn't make a difference if it were locked or unlocked. It hasn't done that in several days, tho (and I only locked it one day since I've had it)

True, the VT works unlocked just fine, I thought the purpose of locking is to have a fixed ohm setting for the tank in use so when resistance changes by temp or when putting your tank on and off it remembers the fixed setting you set before. I don’t think It’s necessary to use it locked all the time.

@BNEAT
The DNA40 has a "refinement" function that fine tunes the resistance when the device is idle. I think it works great, but some people have issues with it. (funny, most of those people have very low post counts on ECF) On the latest version you can turn off Refinement. (i.e. lock the resistance)

I’m curious about the intelligence of the chip inside the VT, does it also works with a similar function like the dna40’s refinement? I don’t know, haven’t seen any tests or scope readings yet, It would be nice if the chip alters his settings when the resistance lowers or visa versa.

@BNEAT
You're having similar issues to what I saw that one day, and I'm leaning more towards a connection problem rather than a device problem. It was hot as hell the day mine screwed up, and one of my tanks leaked juice in the 510. I didn't notice the moisture until that night. I cleaned it and haven't seen that issue since.

It’s possible there are many variables but I double checked my atty’s and I’m always very clean with my toy’s.
Indeed the repeatedly “same coil/new coil” question was triggered when I was working outside and maybe the VT was warmed up by the sun although It was not directly in the sun and there was no leaking. I don’t remember if it was locked at that time.

This afternoon with the VT outside in mine garden same thing happened repeatedly “same coil/new coil” question and suddenly a switch to power mode also.

I will take some extra care to my tanks coming days to short out any connection failure.

But like I said when It works It works very good, I like the VT but not the random inconsistency, I do hope It’s related to one of my tanks or builds but when I swapped them to my VF there was no problem at all.

Thx for you reply!

 

[JeremyR]

A German reviewer disassembled the battery pack: there are three lipo batteries 1500 mah each, makes a total off 4500 mah.

[youtube]

Well this is a little off.... I thought it didn't seem much longer than the istick 50.. Thought it was the screen and chip sampling when idle.. Guess it is only 500mah more with a bigger screen so evens out with istick 50.

But hey, from china I would expect this that's why it's half price of other comparable mods..

I get 2-3 days on this no problem. With temp control, serious power, and no touch lipo batteries for $55.00, no complaining here.

Really this 4500 mah will still spank a pair of 18650 imr's... After you vape a few years and compare vape quality to cut off between imr and lipo; You will see.

Only way to get close to lipo performance from 18650 is to stack or run in series for 8.4v input. This give longest power per charge with 18650 still doesn't match the curve on lipos.

I believe these are 15 amp cells.

 

[niterider]

@damped Yes the VT will work just fine without the atty locked but you are essentially taking the Temp control element out of it when you do so! The whole point of locking the atty is to maintain en even temperature throughout the vape.

 

[hashtag]

to what do you refer? Pretty much every pic I have seen of the vt has T in celsius...and if it is 3x1500 mAh then they have been telling little fibs Very poor!

They struggle a bit with math and colors.

 

[BNEAT]

@BNEAT I noticed mine lowered the resistance and it didn't make a difference if it were locked or unlocked. It hasn't done that in several days, tho (and I only locked it one day since I've had it)

True, the VT works unlocked just fine, I thought the purpose of locking is to have a fixed ohm setting for the tank in use so when resistance changes by temp or when putting your tank on and off it remembers the fixed setting you set before. I don’t think It’s necessary to use it locked all the time.

@BNEAT
The DNA40 has a "refinement" function that fine tunes the resistance when the device is idle. I think it works great, but some people have issues with it. (funny, most of those people have very low post counts on ECF) On the latest version you can turn off Refinement. (i.e. lock the resistance)

I’m curious about the intelligence of the chip inside the VT, does it also works with a similar function like the dna40’s refinement? I don’t know, haven’t seen any tests or scope readings yet, It would be nice if the chip alters his settings when the resistance lowers or visa versa.

@BNEAT
You're having similar issues to what I saw that one day, and I'm leaning more towards a connection problem rather than a device problem. It was hot as hell the day mine screwed up, and one of my tanks leaked juice in the 510. I didn't notice the moisture until that night. I cleaned it and haven't seen that issue since.

It’s possible there are many variables but I double checked my atty’s and I’m always very clean with my toy’s.
Indeed the repeatedly “same coil/new coil” question was triggered when I was working outside and maybe the VT was warmed up by the sun although It was not directly in the sun and there was no leaking. I don’t remember if it was locked at that time.

This afternoon with the VT outside in mine garden same thing happened repeatedly “same coil/new coil” question and suddenly a switch to power mode also.

I will take some extra care to my tanks coming days to short out any connection failure.

But like I said when It works It works very good, I like the VT but not the random inconsistency, I do hope It’s related to one of my tanks or builds but when I swapped them to my VF there was no problem at all.

Thx for you reply!

I really don't know what these things are doing, or how they're supposed to work. I'm switching to a known consistent tank today to see if it replicates the issues I was having yesterday with the Mega tank. (the resistance was all over the place. I actually had to crank the temp up to 570 at one point to get a decent vape.) Even with the it locked, it still changed the resistance on the screen, And once it asked new coil/same coil, too.

I'm not really sure why I was using the Mega tank to begin with: It doesn't taste all that great, and it's loud as hell! I guess I just wanted to get my monies worth out of that coil. Going in I had my doubts about the way the coil wires are captured. I remember hearing all kinds of chatter about other troublesome TC coils that are built the same way.

I'll report back later to see how it goes. My vaping conditions should be about the same as yesterday (hot and nasty, with occasional blasts of cold AC)

 

[BNEAT]

@damped Yes the VT will work just fine without the atty locked but you are essentially taking the Temp control element out of it when you do so! The whole point of locking the atty is to maintain en even temperature throughout the vape.

My thought was by not locking it I would find out how stable the chip is, and maybe get an understanding of how it works/behaves. So far I don't think locking it does anything at all...but (see sig)

 

[damped]

@damped Yes the VT will work just fine without the atty locked but you are essentially taking the Temp control element out of it when you do so!

I'm not sure about that, the TC works just fine without the atty lock, what do you mean with "without the atty locked but you are essentially taking the Temp control element out of it" ? TC still works with or without the lock or....

@niterider The whole point of locking the atty is to maintain en even temperature throughout the vape.

I think the use of the lock is related to the variable resistance of the used atty in different situations so when the resistance changes the mod knows his starting resistance from where he makes the calculations for supplying power amount to the atty according the starting resistance.

 

[niterider]

I'm not sure about that, the TC works just fine without the atty lock, what do you mean with "without the atty locked but you are essentially taking the Temp control element out of it" ? TC still works with or without the lock or....

@niterider The whole point of locking the atty is to maintain en even temperature throughout the vape.

I think the use of the lock is related to the variable resistance of the used atty in different situations so when the resistance changes the mod knows his starting resistance from where he makes the calculations for supplying power amount to the atty according the starting resistance.

I think this is the concept people are struggling with. When you heat up a ni200 wire, the resistance will change which then effects the algorithm involved that calculates temperature. So when you don't lock it, the temp becomes inaccurate as you vape.

HOWEVER, I just tried vaping it without the atty locked. WTF? The resistance didn't change at all! That's not supposed to happen. It remained at .19 for me. Unless I'm missing something, we have some serious quality control issues going on and is why we can't get a consistent take on this thing.

EDIT: LOL at ecf for blocking out "W T F"

 

[BNEAT]

Yeah, there's not enough info out on how these chips work. It's almost like it has "refinement" of some sort. (I know it does something when it sits idle for a short period of time)

 

[niterider]

I'm ready to throw this back at Joyetech. This is either a chip flaw or mine could just be defective. No wonder I have to set the temp at 550 to get anything sometimes.

Does anybody out there see a resistance change when the atty is unlocked? It should, but wanted to see if this flaw is regulated to just a few or everyone.

For the record I have a black Evic.

 

[hashtag]

I think I just got lucky, mine works how it is supposed to. If I lock it in it maintains if I unlock it the resistance changes with temp. When I hit the desired temp when taking a puff it pulses to maintain temp. My buttons don't have any play, I can shake it like crazy and it makes no sound at all.

I feel bad that everyone isn't having the experience I am, all the talk about how it "should" work is generally exactly how mine seems to work.

 

[BNEAT]

I just put a .75ohm single Ti coil tank on that works great on my Flask. Vaping at 60watts/440degrees. We'll see how it goes.

 

[swatsqad]

I just put a .75ohm single Ti coil tank on that works great on my Flask. Vaping at 60watts/440degrees. We'll see how it goes.

AT 440 degrees, I barely see any vapor :?

 

[DanJiblets]

I think I just got lucky, mine works how it is supposed to. If I lock it in it maintains if I unlock it the resistance changes with temp. When I hit the desired temp when taking a puff it pulses to maintain temp. My buttons don't have any play, I can shake it like crazy and it makes no sound at all.

I feel bad that everyone isn't having the experience I am, all the talk about how it "should" work is generally exactly how mine seems to work.

Yeah I have had 0 issues with mine also. I've never used another temp device, but this works better than I was expecting. It's a cool feature, but still not something I need really.