Batteries in DNA 40

[CharleyDanger]

So I ordered some Sony VTC4s for like $11 each. Given the price and availability I am almost positive they will be fake. I order them from Coval along with a dna 40 box mod. The box mod said it required VTC or HE2, and Coval only had VTCs. I will probably order some HE2s, but I was wondering how the fake Sony VTC preform. With a 40 watt box mod, and two parallel batteries, it is not like I should be going above 15 amps. Anyone have experience with similar devices and fake Sony VTCs?


The mod needing VTC or HE2s had nothing to do with performance. Any 18650 would work I imagine. Yet it is the size of the batteries that are important. It said that the efest and others are like .2mm too big.

 

[Asbestos4004]

No fakes are created equal. They're fakes. Very possibly 2 amp batteries. The Samsung 25r is a great battery. 20 amp and readily available. If you identify the Sony's as fakes (there's threads and websites to help you) then don't use them. But, some still have vtc4's. I got some from Vapinart. They're real.

 

[BadTrainDriver]

Here's a link to real VTC4's

Sony 18650 VTC4 2100mAh 30a

 

[BadTrainDriver]

Link for ways to spot fake VTC batteries:
How to spot a fake Sony VTC5 battery

 

[Asbestos4004]

Thanks badtraindriver....cool name too.

 

[novamatt]

The mod needing VTC or HE2s had nothing to do with performance. Any 18650 would work I imagine.

It would be great if this were true, but unfortunately you're incorrect here. According to the spec sheet for the DNA40, your device can be pulling up to 16 amps of current, which is why the two batteries they require can handle 20 amps or more. I wouldn't use the fake, because you have no idea whether or not it can take the amperage you may be using.

 

[CharleyDanger]

I meant any 18650 as in the trusted VTC, HE2, Efest... I was just trying to say that the suggested brand of the 20 amp + was about the size, not the brand performance. I thought some people might have seen HE2 and suggested using the Samsung being that it performs better. I wish I could just use my Efest, but they will not fit.

 

[CharleyDanger]

Here's a link to real VTC4's

Sony 18650 VTC4 2100mAh 30a

Thanks for the links...

They are selling for $11 as well. I figured that they would be more given the rarity of them. Or is the rarity of them being overplayed? I heard they used to go for 20 a pop.

Maybe the ones I ordered will be real.

 

[novamatt]

Makes sense to me. I just see so many people who just think "regulated mod, it's gotta be safe on its own" without any understanding of the current requirements of these things that I twitch a little when someone doesn't seem know. I think that coval is a pretty reputable vendor, but it's always possible that they got fakes they didn't know were fake. I'd check the batts against the link posted above, and if they're not good, you can always order an HE2 from RTD or Orbronic or someone we know sells good batteries.

 

[Millah]

Correct me if I'm wrong, but I believe the "soft-limiting" feature in the DNA40 will only give you the power your battery can supply the board. So you shouldn't need to worry about over-taxing the battery, the DNA 40 will simply throttle back the output if you exceed the batteries capabilities, and will flash a "weak battery" message.

I've heard that a lot of the fake VTCs are actually rewrapped 25r's, which is also an excellent battery.

 

[novamatt]

Correct me if I'm wrong, but I believe the "soft-limiting" feature in the DNA40 will only give you the power your battery can supply the board. So you shouldn't need to worry about over-taxing the battery, the DNA 40 will simply throttle back the output if you exceed the batteries capabilities, and will flash a "weak battery" message.

I've heard that a lot of the fake VTCs are actually rewrapped 25r's, which is also an excellent battery.

I hadn't heard about this feature before. If it's possible, that's awesome. How would the board know whether you have a 2 amp battery or a 30 amp battery in it? I would assume it just sees the voltage in.

 

[CharleyDanger]

Correct me if I'm wrong, but I believe the "soft-limiting" feature in the DNA40 will only give you the power your battery can supply the board. So you shouldn't need to worry about over-taxing the battery, the DNA 40 will simply throttle back the output if you exceed the batteries capabilities, and will flash a "weak battery" message.

I've heard that a lot of the fake VTCs are actually rewrapped 25r's, which is also an excellent battery.

The reason I was needing a VTC or HE4 was because the device (vapor flask) has just enough room for 18mm 65mm batteries. Efest and Samsung and the rest are just a bit bigger than 18mm 65mm. It says you cannot even fit a VTC if it has a sticker on it.

 

[Millah]

I hadn't heard about this feature before. If it's possible, that's awesome. How would the board know whether you have a 2 amp battery or a 30 amp battery in it? I would assume it just sees the voltage in.

As Brandon from Evolv put it, "watts in - watts out." Soft-limiting basically allows the device to continue supplying power, even if you are trying to go beyond its capabilities, it simply limits the output to what it CAN achieve. So for example, if you put a 0.06 ohm coil on it which is below the boards limit, it will still allow you to vape, you just won't be able to hit 40 watts.

Soft limiting is what enables the DNA 40s ability to allow you to keep vaping, although at a much lower wattage, when the battery reaches its discharge point. Ever notice when its time to change your battery, you can still vape it but the DNA throttles back the power to a much lower wattage? I'm pretty sure all these features are enabled by the boards soft-limiting.

Watch pbusardos DNA40 intro video with Brandon.

btw I'm not advocating anyone to use cheap mystery batteries with their DNA 40. I'm simply saying the DNA 40 is going to protect you (for the most part) from doing any damage to yourself. Lol

 

[Dampmaskin]

At 40W and near empty batteries you're at 14 A total, so with two batteries in parallel you're almost certainly safe no matter how bad the fakes are. (Unless they're low drain ICR batteries or something, but then the vendor must be criminally stupid.)

 

[Asbestos4004]

I have an authentic vapor flask. Samsung's, LG's and VTC' s all fit but you need to peel off all the stickers. Marry a fresh set of batteries and charge them together.

 

[CharleyDanger]

I have an authentic vapor flask. Samsung's, LG's and VTC' s all fit but you need to peel off all the stickers. Marry a fresh set of batteries and charge them together.

Really? Well that is good to know. I watched a vid of a guy trying to ram his Samsung in there, but he did have the stickers on, through. Hopefully the VTC are real, but if not, Samsung it will be.

 

[novamatt]

As Brandon from Evolv put it, "watts in - watts out." Soft-limiting basically allows the device to continue supplying power, even if you are trying to go beyond its capabilities, it simply limits the output to what it CAN achieve. So for example, if you put a 0.06 ohm coil on it which is below the boards limit, it will still allow you to vape, you just won't be able to hit 40 watts.

Soft limiting is what enables the DNA 40s ability to allow you to keep vaping, although at a much lower wattage, when the battery reaches its discharge point. Ever notice when its time to change your battery, you can still vape it but the DNA throttles back the power to a much lower wattage? I'm pretty sure all these features are enabled by the boards soft-limiting.

Watch pbusardos DNA40 intro video with Brandon.

btw I'm not advocating anyone to use cheap mystery batteries with their DNA 40. I'm simply saying the DNA 40 is going to protect you (for the most part) from doing any damage to yourself. Lol

Ok, I get what you're saying, but again, atomizer resistance has no impact at all on the current that's being pulled from the battery (like you said, watts in = watts out, and with a set battery level, current draw is going to be based on that wattage). From what you're saying here and what I saw when I originally watched that interview (too long to rewatch at work right now), it still can't tell what kind of battery you have in there and limit based on that, it only sees the voltage level.

Soft limiting will protect you from a coil that's too low resistance or a battery that's drained, but if it can't tell what amperage your battery can handle, it can't limit the wattage based on the battery's current limits.

 

[novamatt]

At 40W and near empty batteries you're at 14 A total, so with two batteries in parallel you're almost certainly safe no matter how bad the fakes are. (Unless they're low drain ICR batteries or something, but then the vendor must be criminally stupid.)

Good call. Didn't notice he was using a parallel dual battery mod.