Nah, a short hit at 10W won't kill it. Cartos don't like much more than that due to wicking limitations.
Sigelei Zmax V3 and V5 Telescopic: User's Group
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The fact that you achieved 8.4w with a 2.3 ohm coil but only 7.7w with a 2.6ohm shows that the board is adjusting but wrongly...
Curiously I said before that those 8.4w would only be the limit if the resistance was at 4.3 Ohms... If you do the math, you now added 0.3 Ohms to your coil right? 4.3+0.3=4.6 which gives, once again, a maximum of 7.7w...
I don't know how but it looks like somewhere there are hidden 2 Ohms that are throwing everything off...
Regards
Tony
Sent from my GT-I9195 through Tapatalk
Curiously I said before that those 8.4w would only be the limit if the resistance was at 4.3 Ohms... If you do the math, you now added 0.3 Ohms to your coil right? 4.3+0.3=4.6 which gives, once again, a maximum of 7.7w...
I don't know how but it looks like somewhere there are hidden 2 Ohms that are throwing everything off...
Regards
Tony
Sent from my GT-I9195 through Tapatalk
More tests, different coils. Power/volts set to max, battery is still at 4.1. Here are the outputs:
2.5 ohm coil- 8.1w, 1.8A, 4.6v
2.3 ohm coil- 8.0w, 1.8A, 4.4v
I'm beginning to think I have a problem with my boost circuit. When I get back to my coil building supplies in Ohio, I'll try maybe a lower resistance build to see whether I get different results. I don't know whether it's a voltage output problem, an amp problem... and regardless of what the problem is, I'm curious if there's any way to fix it myself, although I doubt that's an option if the problem is the electronics rather than something mechanical.
2.5 ohm coil- 8.1w, 1.8A, 4.6v
2.3 ohm coil- 8.0w, 1.8A, 4.4v
I'm beginning to think I have a problem with my boost circuit. When I get back to my coil building supplies in Ohio, I'll try maybe a lower resistance build to see whether I get different results. I don't know whether it's a voltage output problem, an amp problem... and regardless of what the problem is, I'm curious if there's any way to fix it myself, although I doubt that's an option if the problem is the electronics rather than something mechanical.
My ohm readings are from the v5 itself, so I don't understand why it would add in any extra ohms.
That also doesn't explain why I don't have issues using a stacked set up. If it were calculating wrongly, I would expect it to do so regardless of battery configuration.
I did. 30 gauge kanthal, 6/5 wrap around a wire nail (I don't have calipers to give you the exact diameter), in a protank coil head.
I don't think the issue is the coils, since I've put in numerous coils over the past 2 weeks with the same power limitation occurring.
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Humm... I have had some very very curious experiences with kanger heads when I tight them down (huge variations in resistance... From 1.2 up to 2.8) BUT your v5 should give you the correct reading unless the resistance changes drastically during firering... I don't know what else it could be besides something on the board. Can you test another atty just to eliminate the possibility of the kanger head playing havoc?
Regards
Tony
Sent from my GT-I9195 through Tapatalk
Regards
Tony
Sent from my GT-I9195 through Tapatalk
I can, but not until I get back to Ohio Sunday night. All I have with me is my protank 1 and 3, and swapping between those doesn't seem to have any effect. I can run some tests on my AGI hybrid with different coil builds much easier. I believe (but can't specifically recall) that I ran into the same issues, though.
Well let's hope someone comes up with a bright idea because I've run out of them. At this point I would have reset the firmware and if it didn't work, I would either send it back or toss it but I have Latin blood so I boil pretty fast with those kind of things
Regards
Tony
Sent from my GT-I9195 through Tapatalk
Regards
Tony
Sent from my GT-I9195 through Tapatalk
Glad it's working for you.
Definitely sounds like some type of problem with the device. Possibly, just a problem with the boost circuit. Who knows there may be v3s out there with similar problems. With my v3 I know that when I stacked it seemed like all the electrical issues I had before - went away... Possibly you have a bad connection somewhere inside and the added power from the batteries over comes it. I'm thinking one of the solders on the leads.
@tchavie
I know I'm still stuck on the 2.5 amp limit, sorry... But, If you run the battery to cut off, I bet you will average 2.5 amps or less over the charge. Especially running low ohms.
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This sounds plausible. Of course the ~4.3 ohms would produce the same results.
And the added resistance Makes sense. One spot I first think of is the solder of the negative lead from the board to the top cap. But any loose or poor connection in there could cause added resistance.
But stacking the batteries still allows it to power above the limits that a 4.3 would be able to achieve at 6v... So that seems to defy the theory. Whatever it is, it seems like 8v coming from the battery overcomes the poor connections with pure power.
It seemed to fix all issues I had with the v3. Just like the pure power breaking through the chains of what ever the problems were.
So it still may just be an issue with the boost MOSFET.
Have you tried a static discharge on it? Pull battery out and hold the fire button a couple times to discharge all the energy from the board. Then start it back up . That could possibly help with a software problem. But probably not fix it.. But I would try it though.
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I am SOOOOOO amused (and pleased and psyched and.....)
I have a kayfun 3.1 ES clone on which I'd miraculously built a 1.8-ish ohm coil a month or so ago. I've had *SUCH* good luck with it on my MVP, so after cleaning/dry-burning/rewicking (*ALWAYS* the scary part for me) and filling with one of my favorite flavors, I took it for a test drive on my V3. Started at 10.5W. *O* *M* *G*. Amazing!!!! Got gutsy and pushed to 12.0W. Angels are singing, trumpets are sounding, flowers are blooming.....
I rue the day I have to put a new coil on this monster. It had run nicely on my MVPs, but it's pretty damn awesome on my V3 (and IMHO looks nicer too.)
(now, if I can only get my other kf clones to behave more nicely.....)
I have a kayfun 3.1 ES clone on which I'd miraculously built a 1.8-ish ohm coil a month or so ago. I've had *SUCH* good luck with it on my MVP, so after cleaning/dry-burning/rewicking (*ALWAYS* the scary part for me) and filling with one of my favorite flavors, I took it for a test drive on my V3. Started at 10.5W. *O* *M* *G*. Amazing!!!! Got gutsy and pushed to 12.0W. Angels are singing, trumpets are sounding, flowers are blooming.....
I rue the day I have to put a new coil on this monster. It had run nicely on my MVPs, but it's pretty damn awesome on my V3 (and IMHO looks nicer too.)
(now, if I can only get my other kf clones to behave more nicely.....)
E squire, I remember your issue and I'm sorry to hear you're still having this problem.
Going by the atomizer resistance you gave us (2.3 ohms), there is no reason why the V5 would be limited to 8.4 watts. Assuming your connections and your batteries are good (and that you're set to RMS in menu #8), there's not much left but to start suspecting that there's something wrong with your V5.
Earlier testing I did regarding output capability showed the following results (may not have been with a completely "fresh" 18650 battery):
- 1.6 ohm atomizer: max output of 4.4 volts (12.1 watts).
- 2.6 ohm atomizer: max output of 5.2 volts (10.4 watts).
I didn't do any testing at 2.3 ohms, but you can surmise from the above results that you should be topping out somewhere closer to 11 watts (not 8.4 watts).
EDIT: I wanted to add the fact that the battery I was using my not have been at max charge, so the results may be slightly low.
Going by the atomizer resistance you gave us (2.3 ohms), there is no reason why the V5 would be limited to 8.4 watts. Assuming your connections and your batteries are good (and that you're set to RMS in menu #8), there's not much left but to start suspecting that there's something wrong with your V5.
Earlier testing I did regarding output capability showed the following results (may not have been with a completely "fresh" 18650 battery):
- 1.6 ohm atomizer: max output of 4.4 volts (12.1 watts).
- 2.6 ohm atomizer: max output of 5.2 volts (10.4 watts).
I didn't do any testing at 2.3 ohms, but you can surmise from the above results that you should be topping out somewhere closer to 11 watts (not 8.4 watts).
EDIT: I wanted to add the fact that the battery I was using my not have been at max charge, so the results may be slightly low.
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OK, I did a quick test at 2.3 ohms with a fully charged battery. Keep in mind that this result will curve down as the battery depletes.
- 2.3 ohm atomizer: max output of ~5.1 volts (11.5 watts displayed on the V5).
- 2.3 ohm atomizer: max output of ~5.1 volts (11.5 watts displayed on the V5).
Well that's odd! Wth?!?
I thought it would be able to reach 2.5-2.67 amps with a single battery.... Your showing its maxing out at 2.2 amps? .. Ok now I'm even getting confused!?! Lol.
So is this were the voltage settings gives the higher power you were recording previously.
I thought it would be able to reach 2.5-2.67 amps with a single battery.... Your showing its maxing out at 2.2 amps? .. Ok now I'm even getting confused!?! Lol.
So is this were the voltage settings gives the higher power you were recording previously.
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Did a reset, no change.
I got this as a birthday present in early August, so I'm not really sure what my warranty entails, though I'm sure I can look into it. It was purchased from MyVaporStore. At any rate, I really do like the device, even with this flaw, and practically speaking this doesn't affect my day to day use at all, especially since it's overcome in stacked config. Call me a pushover, but I'm keeping it.
As a side note, somewhat related, there was about a 2 or 3 week period where every time I changed batteries, I intentionally put it into the debug mode that shows the firmware version because I liked being able to see my resistance and then power output, but I don't think that created the issue. In fact, paying attention to the display is how I discovered the issue. Before, I had the v5 set to display resistance because I was honing my coil building craft. In retrospect, I might have caught the problem sooner had I set the device to display power output, but I just assumed I could set it and forget it. The idea that it wasn't going to hit the power I set it to didn't occur to me.
I was in the same boat, back around post. 850 of this thread yzer said mine was defective and should be sent back... Well I kept it and it's still working - every day. 
The bad connection thing makes sense. I don't have a good solder pen, and the problem doesn't justify taking it apart and risking making things worse.
All those years of watching Tim Allen on Home Improvement has taught me sometimes the solution is simply MORE POWER! [emoji6]
I am in RMS. And I gave all the threads a good cleaning and noaloxing. I've put in brand spanking new fully charged purple efest 18650. I suppose my last variable (short of taking it apart) is the atty like Tony suggested, and I'll experiment with different resistance coil builds on my AGI tomorrow night when I'm back with my supplies in Ohio. I'm not optimistic, though.
Now that you mention it, I recall the earlier tests you ran, and that's part of how I realized that the problem may be particular to my device (power envy [emoji6] ). Thank you for sharing your results.
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