Evolv DNA 75

[Fozzy71]

,...
The second and third... the 75w needs the firmware update to keep it from being over-enthusiastic with its' Low Batt and Weak Batt measurements, and you need to make sure you have a proper .csv in there for whatever battery you're using.
That last one made a night and day difference on my 75s.

Sorry to be a noob, but I am, where do I find the firmware update and how do I install it to my 2 x smy sdna75's?

we need a .csv for each battery we might use in the mod? or can only use 1 battery in there and it needs a proper csv? again, where do I find these csv files and how do I install them? rethinking this whole dnaxxx mod thing.

 

[VapingBad]

Sorry to be a noob, but I am, where do I find the firmware update and how do I install it to my 2 x smy sdna75's?

we need a .csv for each battery we might use in the mod? or can only use 1 battery in there and it needs a proper csv? again, where do I find these csv files and how do I install them? rethinking this whole dnaxxx mod thing.

fw Early Firmware - Evolv DNA Forum

Don't worry too much about the battery csv it only helps the battery bar be more accurate, it doesn't affect your vape, charging or how low your battery can go.

 

[BillW50]

Sorry to be a noob, but I am, where do I find the firmware update and how do I install it to my 2 x smy sdna75's?

we need a .csv for each battery we might use in the mod? or can only use 1 battery in there and it needs a proper csv? again, where do I find these csv files and how do I install them? rethinking this whole dnaxxx mod thing.

Funny James (from Evolv) just answered this question on Evolv's forum.

The results of Battery Analyzer only affect the battery meter. If you can live with a battery meter that is maybe 10% or 15% off, you really don't need to configure anything in EScribe for your batteries.

Weak Battery messages are based on a minimum voltage, and charging goes to a maximum voltage. We did this intentionally so that accidental misconfigurations have cosmetic effects only. The safety-critical systems are not user-configurable.

The battery *type* matters, but Lithium Polymer/18650 is already selected by default. Only if you are using LiFePO4 batteries (I thought people would want to, but it seems not) are you going to need to configure that...

View Single Post - Wismec Reuleaux DNA200 onboard USB charging safe? Still should Rotate batteries? - Evolv DNA Forum

Ok James was talking about the DNA200 and it isn't 100% the same with the DNA75. But the part about you don't have to set anything for the battery or set it wrong and it isn't a big deal part is right. As it is only cosmetic.

 

[Jim_ MDP]

Sounds good Bill.
I liked the improvement in meter accuracy though, so I'm glad I got mine squared away.

So... looks like maybe too much sag. Bad battery perhaps?
Or soft cut-off too high? Fozzy?

 

[Fozzy71]

Sounds good Bill.
I liked the improvement in meter accuracy though, so I'm glad I got mine squared away.

So... looks like maybe too much sag. Bad battery perhaps?
Or soft cut-off too high? Fozzy?

i wasn't the one with issues. Mine works fine afaik other than the sucky profiles it came with by djslbvapes or w/e. I had actually downloaded that firmware already, just never installed it. That is done. Too late for me to even try and look into the csv files for my batteries and since I rotate through a number of different make batteries sounds like a lot of hassle.

 

[Jim_ MDP]

i wasn't the one with issues.

Quite right, that would be h00ligan. Sorry.

Spazzing out today trying to do three things, watch the Games, and thinking of feeding myself.

Derp.

 

[KTMRider]

I usually don't go below 30% battery but last night I went down to 19% on a DNA75 in TP @30w with no issues. I'm using Samsung 25r and soft cell cutoff is set to 2.75v in Escribe.

 

[Topweasel]

Also keep in mind not all 20a batteries are the same. Because a HG2 has so much more capacity it will struggle sooner near the end of the battery than a VTC5, HE4, or 25r. Honestly wouldn't Reccomend using anything less than a 25a battery.

Sent from my Nexus 6 using Tapatalk

 

[h00ligan]

You need to check three things...

First, is it a decent battery? If so...not old, dying or damaged?

The second and third... the 75w needs the firmware update to keep it from being over-enthusiastic with its' Low Batt and Weak Batt measurements, and you need to make sure you have a proper .csv in there for whatever battery you're using.
That last one made a night and day difference on my 75s.

Brand new authentic healthy battery. Did the upgrade to the beta firmware. Here's s video. I had tried to shoot these over and over due to mic differences. And it took six hours to upload it to YouTube. I don't even know if it's the right video. But you should be able to see what i mean - my sound will Cut out. The phone has an issue and need to be replaced. Sorry snot bag. Bt here's the example of what's happening to be very clear as my description may not have made sense to everyone

 

[BrentMydland]

I keep finding varying specs. Does anyone know if the sdna75 can handle 23mm without overhang and if the vt75 nano can handle 25mm without overhang?

 

[Topweasel]

OK. Watched your video. Couple of things. A. Your battery if correctly displaying roughly 25% power left, is not firing at 3.8 or 3.9 volts that you stated. Depending on your voltage cut off and your discharge curve you probably are closer to 3.5 but it could be even lower.

Now looking at my SDNA. It has the voltage cutoff at 2.7 which really cuts it off at 2.9. That is pretty low. The curve looks like it probably puts 20% and 3.4-3.5 anyways. Now a regulated device can't make a battery fire at whatever you want in range from 100-1%. It just means that during the period of time your battery can power the settings you have set it will keep the delivery even.

Now what should be happening on your device is that initially your battery should be firing at 3.4v ish. Then you get voltage sag dropping it even lower. To manage this the DNA chip will attempt to use your batteries current to boost the power higher to hit the 3.8-3.9 volts you have it set for. By default you are already using about 4a. This will increase it by a bit. So now the current draw is higher causing the voltage to sag more. In the end you SMY is probably getting 3v from the battery and is probably trying to get 8a or so (not an electrician so it's a guess). It entirely possible it can't do that. Or the sag is actually taking the battery to under your set cut off.

Now if it's an absolutely new battery you are in luck. Chances are it will get better after 2-3 power cycles. Bad news is that not by a whole bunch. Mine regularly hits it's limit at 15%. You have to remember that a batteries storage is now linear. Most of a batteries power potential is available from 3.9-3.5 volts. Higher and lower accounts for very little a batteries useful potential. That's why a good battery curve in escribe can be really helpful. But in the end it doesn't matter. A battery slows down when it wants to slow down.

Now if it was you device the problem would be that it wasn't doing boost. Best way to test that is to charge it to full and set the wattage till you get 5v and see if it fires at 5v. If it does than no matter what the display says. The problem you are seeing is a battery issue and not a device issue.

I would also recommend connecting your device to escribe and seeing what you sag looks like. You can look at set voltage and amp usage and actual power delivered as well. As a Demo my near full charge (4.18) HG2 (20+ charge cycles) at 35w on a .48 coil will do this. Instantly sag to 3.7v. the voltage is boosted on a small ramp to 4.1v and the current is at 8a nearly right away. Try it at full charge and at 20% and see what your results are.

 

[Topweasel]

I keep finding varying specs. Does anyone know if the sdna75 can handle 23mm without overhang and if the vt75 nano can handle 25mm without overhang?

Doubtful. 22mm are so close to the edge. There is some space but I doubt it's another half a mm. It won't look bad but..... Never mind it was looking at the front of the device because that is where the SDNA 200 starts with overhang (even 22mm have some slight overhang on that). But on the SDNA 75 the sides are pretty much flush at 22mm. A 23mm Atty will have about .5mm on each side.

 

[Jim_ MDP]

But you should be able to see what i mean - my sound will Cut out.

The sound was a bit problematic... when it suddenly jumped and my little lappy was at 86% volume, but I think I got the gist.

Okay... I'm having cocktails so I can't get into this tonight, but...

I just happen to have pulled a batt from a Pico and when I popped it into an SDNA it reads 20% (perfect), and I happen to have a Lil' Serpent with a simple 1.1 ohm SS430 single coil (this just keeps getting better, amIrite)... so here goes... (caution... drunkenly excessive ellipsis ahead... behind?)

Ok, too silly...

I set it to Watts/Power mode and set material to Watts (no TC).

Set power to 15w and... 15 watts and 4.53 volts. Bang.
That wasn't quite enough oomph so I turned it up to 20w... no problem.

Now... can we stop saying it's the DNA75 chip?
And try to figure out why it's your DNA75 chip?

 

[VapingBad]

Brand new authentic healthy battery. Did the upgrade to the beta firmware. Here's s video. I had tried to shoot these over and over due to mic differences. And it took six hours to upload it to YouTube. I don't even know if it's the right video. But you should be able to see what i mean - my sound will Cut out. The phone has an issue and need to be replaced. Sorry snot bag. Bt here's the example of what's happening to be very clear as my description may not have made sense to everyone

It is a feature they brought in on the DNA 40 called soft limiting. When your battery cannot supply enough power for your set power it reduces your output power rather than stop or overstress your battery. I doubt your battery is anywhere near 3.8-3.9 V @ 20% as stated in the video, the default curve for the DNA 75 has 3.49 V for 20%. As others have said look at the battery sag in device monitor to better understand what's happening.

 

[Jim_ MDP]

I doubt your battery is anywhere near 3.8-3.9 V @ 20% as stated in the video,

I think he has one of the side-lines set to voltage, like I do for PWR Mode.
I'd check which I have/what it displays (batt vs. coil) but I don't want to deal with Escribe right now. (eta: obviously mine is output)

I still wish they'd allowed at a minimum a subset of the available choices to be selected in-mod.

Gawd... I'm barely legal to walk... how am I typing?

 

[Topweasel]

Yeah but it's not as intuitive to interpret as it is in the battery monitor. All he can see is that he has it set for 15w. Which should be like 3.9v and the device tells him that it's only feeding 2 something. Seeing the actual battery voltage and watching the power drop from sag os another beast to watch. It should also help him get used to looking at the device monitor when he is trying trying to figure out what's happening when something isn't acting the way you think it should.

I remember when I got my Sig 150TC. New HG2's at 50w would completely stop the device from firing at 40%. Eventually they warmed up to about 25-30%. But the idea of using the device once power got low was out the window.

The end result is on most other device the battery would either A. Show empty or near empty and not fire because the cut off is 3.4 or 3.5. Or B. Would still not fire but show that there is power left in the battery.

Sent from my Nexus 6 using Tapatalk

 

[Jim_ MDP]

All he can see is that he has it set for 15w.

Agree with the rest... but we can see in the vid that it's not holding set wattage. Why?

The test I described it went bang... hit set power and stayed there. No drop, no fade.

 

[Topweasel]

Agree with the rest... but we can see in the vid that it's not holding set wattage. Why?

The test I described it went bang... hit set power and stayed there. No drop, no fade.

What battery? How many cycles on yours versus his? I mean even on my SMYs with batteries on a couple dozen charge cycles we are only talking about 5% battery life between him and myself seeing the same thing. He might need a couple cycles on his battery, he could have a fake battery, he could have a sub par cell, his battery (25r) might not be as good as whatever one you are using, he might be in a warmer climate causing his battery to sag more. Did you change the cutoff or the battery curve for yours, did he?

If it's not boosting the quick check is to charge it and, watch the device manager, and set the voltage above the batteries charge level. If it's fully charged and he sets it to 4.7 -5v and he hits his power level. Then the device is working and it's the battery. So unless it fails which I doubt it would, his device shows one symptom. That is that with his curve and his cutoff on his device at ~1 ohm at 15w, when this BATTERY is discharged to ~20% it is not capable of hitting the desired power settings. It's just that simple.

Now while I doubt it's the device. It could be and it would be an issue with device and not a problem with DNA75s. But until then the part of the device that has the most variance between users is the battery. Each one is pretty much unique and the only real test is with the same mod settings having you two swap batteries.

 

[Jim_ MDP]

What battery? How many cycles on yours versus his?

He said fairly new 25R. Authentic? Ask.
Mine was an eleven month old HE4, probably 70-80 cycles.

The rest I already asked about.
Device Manager? I think you're preaching to the choir.

 

[Topweasel]

He said fairly new 25R. Authentic? Ask.
Mine was an eleven month old HE4, probably 70-80 cycles.

The rest I already asked about.
Device Manager? I think you're preaching to the choir.

Sorry mostly was just trying to reinforce the idea that it was the battery. I asked him how many cycles already as well. I was just pointing out to you that success for you doesn't mean his device was acting up.

I asked on authenticity as well as cycles earlier. He answered that his where originals. But I don't know if that really means anything until a battery is tested. There is a reason Mooch has to do all the testing he does to get the identity and limitations of a cell he is testing.