DNA 200 Watt

[nic_fix]

I had thought originally evolve said dna200 was required to be mated to a lipo pack. now mods show up with multiple 18650. I am sure that is fine and I would prefer that too. obviously they will power it. not sure what evolve thinks. perhaps there is less safety concern with a lipo pulling them down as much as this can. it is monitoring several aspects of the lipo. is it doing so with the 18650's? I am certainly not against it just wondering if it is appropriate. you can put anything together of course.

I am sorry if I seem stupid. those in this thread are way more technically inclined than I. on that note, I was having difficulty with the dna200 vs. the 350j. it turns out that the issue lies in that the dna200 offers much more control. there are parameters. using it without escribe is certainly not going to garner the most out of it. whereas yihi, everything is done on the mod itself. albeit not as much to do. resulting in not as good a vape as the dna20 can provide. it just so happens that this is a lot for me to swallow. I figured it out and indeed now prefer the dna200. it can and will provide an outstanding vape experience. I am getting a cool vape with good throat hit and good production. to do the same on the 350j I think it has to be pretty warm. not sure if you mess with the tcr in the latest firmware but that is kind of defeating it anyways. that is in regard to yihi.

 

[AtmizrOpin]

How long does case analyzer run? I'm using it on a custom box. Since my escribe is on a win tablet I'm concerned about battery life.

 

[retird]

How long does case analyzer run? I'm using it on a custom box. Since my escribe is on a win tablet I'm concerned about battery life.

Didn't watch the clock but estimate of 3 hours when I ran it.

 

[AtmizrOpin]

Ok then, that's definitely beyond the range of a tablet battery, lol. Oh well. Just gotta get a real pc.

 

[Tpat591]

Can't run the tablet with the charger attached?

 

[AtmizrOpin]

Only one usb port. Anything out there that can turn it into two ports so I can charge and use escribe?

 

[retird]

Only one usb port. Anything out there that can turn it into two ports so I can charge and use escribe?

Not sure what's available that will work.

 

[Vlad1]

Just my experience coupled with additional anecdotes from others. YMMV.

I never got a chance to measure the actual coil temps of the SXM (I hated it and sold it to someone who will enjoy it -- yup I'm an evolv fanboy lol) but I have measured actual coil temps of the DNA 200 and it is spot on as well as very stable with the "correct" TCR and a stable build. I have also compared actual resistance of attys (using HP3456A) with what the DNA 200 reports and the resistance readings are accurate when using a good quality, clean 510. Similar to Retird, unless the atty was warm or slightly warm to start, refinement doesn't change my cold resistances any significant amount.

I see, I misunderstood your comment as being validated fact the way it was stated. I didn't realize you were only making those suggestions based on conjecture. I suppose if we wanted to use some of the same anecdotes we could say some of those that are having the anemic or weak vaping experience on the DNA200 when switching atty's between the DNA40 and DNA200 is due to the DNA40 being hotter as well, but that doesn't seem very realistic either.

 

[Mad Scientist]

I see, I misunderstood your comment as being validated fact the way it was stated. I didn't realize you were only making those suggestions based on conjecture. I suppose if we wanted to use some of the same anecdotes we could say some of those that are having the anemic or weak vaping experience on the DNA200 when switching atty's between the DNA40 and DNA200 is due to the DNA40 being hotter as well, but that doesn't seem very realistic either.

I think you are mischaracterizing what I said. To clarify, with regard to the SXM: I owned one; it ran hot. I know others who owned one ; it ran hot. Not conjecture and very realistic: actual experience with the device. I admit it was an assumption on my part that they all still run hot. I can state for sure as fact that mine ran hot. No big deal, I just adjusted it to turn it down a bit. As another possibility, the firmware has been updated to fix it so it's possible it doesn't do that any more or maybe just the ones I and others had happened to run hot.

I hated the SXM for the user interface -- just not to my liking.

Cheers.

 

[dwcraig1]

^^^ which one is it that you didn't care for?

 

[Mad Scientist]

^^^ which one is it that you didn't care for?

I didn't like the SXM user interface. I'll edit the post.

I just didn't like it. Nothing wrong with the interface, but it wasn't for me.

 

[retird]

I didn't like the SXM user interface. I'll edit the post.

I just didn't like it. Nothing wrong with the interface, but it wasn't for me.

I thought your facts presented in your earlier post were spot-on when you said:

".......but I have measured actual coil temps of the DNA 200 and it is spot on as well as very stable with the "correct" TCR and a stable build. I have also compared actual resistance of attys (using HP3456A) with what the DNA 200 reports and the resistance readings are accurate when using a good quality, clean 510. Similar to Retird, unless the atty was warm or slightly warm to start, refinement doesn't change my cold resistances any significant amount."

 

[dwcraig1]

Here my screen shot of my aromamizer with dual coil not-fethal. Its @ 40 watts with 6o watt preheat.
Note the dip in preheat as soon as it fires then jumps back up. I have not seen this happen before. Is this normal?

Here a screen shot of my Subtank with single coil of twisted Dicodes NiFe30 with the same power settings:

 

[AtmizrOpin]

Here my screen shot of my aromamizer with dual coil not-fethal. Its @ 40 watts with 6o watt preheat.
Note the dip in preheat as soon as it fires then jumps back up. I have not seen this happen before. Is this normal?

Here a screen shot of my Subtank with single coil of twisted Dicodes NiFe30 with the same power settings:

you think your preheat shoots you past your set temp then has to dip to bring the temp back down maybe? i wish you could drag the cursor over the line you want in the graph and see what the value is relating to where you point your cursor. rather than just the end of the puff.

 

[dwcraig1]

you think your preheat shoots you past your set temp then has to dip to bring the temp back down maybe? i wish you could drag the cursor over the line you want in the graph and see what the value is relating to where you point your cursor. rather than just the end of the puff.

I have since changed the coils to dual Ti, tried on all three DNA200 mods. Still the same, I'm not all that concerned though. I'm getting nic'd out.

 

[nic_fix]

for the second time my lipo has flat lined. I put it on the charger at 9%. came back 8 hours later and the cells were at .93v and could not charge. had to jump start it again. I have the latest firmware. it said error, press up to continue.

I hope you guys are not ignoring me and would really like to know what is going on.

 

[AtmizrOpin]

for the second time my lipo has flat lined. I put it on the charger at 9%. came back 8 hours later and the cells were at .93v and could not charge. had to jump start it again. I have the latest firmware. it said error, press up to continue.

I hope you guys are not ignoring me and would really like to know what is going on.

what kind of mod? by jump start do you mean usb recovery?

 

[nic_fix]

hana v200. yes, usb recovery. don't know what happened but second time charging went down not up.
I appreciate that you answered me. I could drive to hana if I need to but not sure what's wrong.

 

[vapealone]

I had thought originally evolve said dna200 was required to be mated to a lipo pack. now mods show up with multiple 18650. I am sure that is fine and I would prefer that too. obviously they will power it. not sure what evolve thinks. perhaps there is less safety concern with a lipo pulling them down as much as this can. it is monitoring several aspects of the lipo. is it doing so with the 18650's? I am certainly not against it just wondering if it is appropriate. you can put anything together of course.

I am not an expert, but my understanding is that as long as your power supply can produce the required amperage within the voltage window of the board you are good to go regardless of the chemistry (if there is any at all c.f: power supply option)

However, it is true that Li-Ion behaves differently under load and a Li-ion optimized battery management option would definitely be a blessing. I have actually submitted a feature request for it.
If my understanding is correct Li-Ion has a significant and drain dependent voltage drop (due to its internal resistance?) meanwhile LiPo has hardly any.
But Li-Ion voltage can go as low as 2.7V under load without over-draining it and the idle voltage goes back to 3V or even above meanwhile LiPo voltage shouldn't go below 3V at all.
Therefore, for optimal discharge Li-Ion would need 2 different cut-off values: a lower value for under load and a higher for idle.
E.g.: for safety and longevity point of view I would like the board fully eliminating firing when idle voltage couldn't go back to or above 3.2-3.3V but I wouldn't mind if it goes down to 2.9-3V under load.

ATM I can't really do this.
If I set the soft cutoff (which is actually the under load voltage threshold value) to 3.2 I get weak battery warning (and reduced output) relatively early and my batteries idle voltage would go back above 3.3V (the higher the wattage setting the higher the amp drain and the voltage drop and the higher idle voltage it would go back to)
If I set the soft cutoff to 3 or 2.9 the board won't prevent me discharging my batts close to this numbers, would give the weak battery warning though.

With two values the Li-Ion discharge could be controlled pretty well regardless of the drain.

BTW: @Darkly spectr I have run the battery analyser and have got 28.4Wh @50W with soft cutoff left at 3.09V out of 3 x LG HG2s.
However, I have an external quick blow fuse in the circuit too increasing its resistance and reducing the usable battery capacity. Without it the result would be higher. It would be higher with lower watt settings and/or lower soft cutoff threshold too. But 28.4 is more than fine with me

 

[Mad Scientist]

hana v200. yes, usb recovery. don't know what happened but second time charging went down not up.
I appreciate that you answered me. I could drive to hana if I need to but not sure what's wrong.

Is the firmware up to date? If so, sounds like the battery might have crapped the bed. It likely would be easiest for you to let Hana sort it out as you are so close to them.

If you still want to try to diagnose, post a screen shot of device manager -- the cell voltages usually tell the tale.