Thanks Roxy. That actually is the battery I'm using now - but it's rated for 15amps. Officially dna 40 is spec'd for a 16 amp minimum- so assuming the 'weak battery' means the chip is very conservative and the LG is sagging too much at that point in its cycle, a higher amp battery might help. I'm going to get a 25r and test that theory. (Could also just be a problem with the dna40...)
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Thanks Roxy. That actually is the battery I'm using now - but it's rated for 15amps. Officially dna 40 is spec'd for a 16 amp minimum- so assuming the 'weak battery' means the chip is very conservative and the LG is sagging too much at that point in its cycle, a higher amp battery might help. I'm going to get a 25r and test that theory. (Could also just be a problem with the dna40...)
Thanks Notsomini. I'm curious, when do you take it out to recharge? When the battery meter is empty? Or before that? If you have a multimeter or a charger or other mod that shows a battery's remaining voltage I'd be curious what voltage your battery is at right when you take it out of the vaporshark for a recharge.
Hmm, then that may or may not be the battery to use. I'm getting cutoff at 3.7v though with 2 Samsungs and its making me mad. I'm not getting longer battery life by having a two battery mod
Mooch is showing the LGs as a 20A. I didn't think I misread that.
https://www.e-cigarette-forum.com/f...50-hg2-20a-3000mah-bench-test-results.680796/
https://www.e-cigarette-forum.com/f...50-hg2-20a-3000mah-bench-test-results.680796/
Hmm, then that may or may not be the battery to use. I'm getting cutoff at 3.7v though with 2 Samsungs and its making me mad. I'm not getting longer battery life by having a two battery mod
Actually I just looked it up and I was quite wrong - according to both Mooch's battery test and some specs online the LG Hg2 has a 20amp rating.
I agree that 3.7v is high and that's worse than what I'm seeing on mine (3.6 or so.) I'm pretty sure I wasn't experiencing this my first few cycles with the dna 40, but I must admit I didn't test the battery voltage when I took them out those times so I don't know for sure.
I'm going to email evolv, who knows maybe they'll answer with some info on the expected performance
Actually I just looked it up and I was quite wrong - according to both Mooch's battery test and some specs online the LG Hg2 has a 20amp rating.
I agree that 3.7v is high and that's worse than what I'm seeing on mine (3.6 or so.) I'm pretty sure I wasn't experiencing this my first few cycles with the dna 40, but I must admit I didn't test the battery voltage when I took them out those times so I don't know for sure.
I'm going to email evolv, who knows maybe they'll answer with some info on the expected performance
Now that's interesting because I swear I had the same experience! My first few uses it showed me lower on the battery indicator than it is now. I also didn't start checking the batteries when I pulled them until just recently because I was suspicious.
Yes indeed -you were right and I was wrong - sorry about that!
Here's an email I just sent to evolv:
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Hi there,
I have a question about my dna40, and I couldn't find the answers on this site or elsewhere.
I find that I start getting the 'weak battery' warning around the point that the display is showing about 50% on the battery bar. I'm experiencing this with both an LG HG 2 (rated for 20amps) and Samsung 25r (also 20amp rating), both batteries have fewer than 20 cycles in their lifetime.
I also find that when this happens if I measure the battery voltage they've got 3.6-3.7 volts remaining.
Is this expected behavior? Is the DNA 40 just very conservative with the battery? At what voltage should I expect the DNA 40 to stop being able to pull full power from these batteries? (and, should the battery indicator not be nearly empty when that happens?)
Any explanation of what's going on internally with the software would be very much appreciated!
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Hi there,
I have a question about my dna40, and I couldn't find the answers on this site or elsewhere.
I find that I start getting the 'weak battery' warning around the point that the display is showing about 50% on the battery bar. I'm experiencing this with both an LG HG 2 (rated for 20amps) and Samsung 25r (also 20amp rating), both batteries have fewer than 20 cycles in their lifetime.
I also find that when this happens if I measure the battery voltage they've got 3.6-3.7 volts remaining.
Is this expected behavior? Is the DNA 40 just very conservative with the battery? At what voltage should I expect the DNA 40 to stop being able to pull full power from these batteries? (and, should the battery indicator not be nearly empty when that happens?)
Any explanation of what's going on internally with the software would be very much appreciated!
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My batteries have less than 10 charge cycles on them, and this started happening.
Well I find the battery indicator on the DNA40 a bit iffy....for example: after using the battery for a while it still shows pretty full in wattage mode, but when I than put the device in temperature mode it shows the bar is half empty....back to wattage mode and it shows it almost full again.
No trouble vaping it though, I ussually empty the battery till about 3.2V and I can do that just fine on the Xvostick...the bar is at that point at about 25% (in wattage mode, in temp mode is shows almost empty).....I vape at 13.5W on a nauti coil (1.6 or 1.8 ohm), and use samsung 25r.
No trouble vaping it though, I ussually empty the battery till about 3.2V and I can do that just fine on the Xvostick...the bar is at that point at about 25% (in wattage mode, in temp mode is shows almost empty).....I vape at 13.5W on a nauti coil (1.6 or 1.8 ohm), and use samsung 25r.
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On a related note, and I'm guessing this is just part and parcel of the DNA chips, my batt level will be lower when the mod has been unused for awhile. Take that first hit, and the meter jumps up higher.
My DNA20s did the exact same thing.
My DNA20s did the exact same thing.
Yes, I find that if it is unused for a while it reverts to temp mode or something, at least the first few puffs it shows me the temperature instead of volts (and the more empty battery indicator).
It takes a few puffs for it to detect the coil I guess and jump back into wattage mode..at which point the battery indicator shoots back up.....
It takes a few puffs for it to detect the coil I guess and jump back into wattage mode..at which point the battery indicator shoots back up.....
I'm not one to over analyze (well, vape stuff) but I can only say that the LGs are lasting me a LONG time, even when I crank that bad boy ALL the way up...
To 11 watts [emoji23]
To 11 watts [emoji23]
Mine got to Heathrow yesterday - so probably next week now - but close 
Mine got to Heathrow yesterday - so probably next week now - but close
I can send a driver over to pick it up for you.
I never get the Weak Battery error message warning noted on the Evolv spec sheet. The battery gauge does not work well on my version of the rDNA40. When I first got it I sent an email to Evolv and this is the response I received: "Observed behavior after production. We are aware of the issue and acknowledge it is less than optimal.” The battery meter for the most part shows full on my mod. Sometimes if I turn it over at the right moment I can see that is has gone down but then it goes right back up. I change my battery every night and sometimes in the morning. At that time I am usually somewhere between 3.6 and 3.7. I can also tell by the pull if the battery needs changing. I don’t know if the Xvo has zip charging or if this is unique to the rDNA however I have used this function with an external battery pack when travelling international and it works well. I just looked at the Vapor Shark website and they are now selling the Brillipower batteries which I am not familiar with.
Mooch tested the Brillipower battery. Here is the link.
https://www.e-cigarette-forum.com/f...st-results-only-a-15a-3000mah-battery.702075/
first step in combating the "weak battery" bug with the DNA40 is to clean your contacts. Might help if you have the brass version of the Xvo.
Just so that I have not misled anyone just because I change my battery at night or in the morning, I do this for my convenience. This has nothing to do with getting or not getting a Weak Battery error message or the battery gauge not working. When I emailed Evol my question had to do with the battery gauge. I have a tendency to forget to carry an extra battery so if I am out and about, I don’t risk not being able to vape. I have taken the battery down on a few occasions to 3.4V but this is not the norm for me.
Thanks @Freedom2Vape - I read Mooch’s test results on the Brillipower battery. Mooch also provided some links. I glanced over the PDF file that was included for the 18650 . I am not a technical person and especially relating to batteries however on the chart I assume the various ohms listed relates to the coils. I do not subohm so this does not apply to me unless I am misunderstanding the data. I use the Nautilus 1.8Ω coils anywhere from 9 to 10 watts and sometimes 12-13 watts depending on the eliquid. The VS website did state they tested these batteries. I have five of the LG 20A, 2500 maH batteries and if they work with the Xvo, then I don’t need to buy new batteries at this time. If not, then I will consider the 3000maH LGs.
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