Confusion with voltage output for box mods

[beckdg]

. my regulated mod will go up to 84 volts on a single battery

[emoji38]


Tapatyped

 

[Bunnykiller]

regulated mods have "transformers" in them... they can increase the voltage above the batteries standard output... and some can reduce the output voltage lower than what the batteries voltage is...

 

[Bunnykiller]

that is true for a mechanical mod and under load the voltage is lower than that but a regulated mod is able to boost voltage. my regulated mod will go up to 84 volts on a single battery I think you should learn more about mods and batteries before you try building coils that low or vaping at high power levels. that kind of "cloud chasing" is pushing the limits of your batteries and can be dangerous if you are not a well educated advanced vaper.welcome to ECF. you will find many people here who are happy to help you and answer any questions you have

84V??? or 8.4V? no sence in having 84V at 1 amp capacity... even tho it would be like 80W... it would be a real shocking suprise when the coil breaks and touches the sidewall

 

[mauricem00]

84V??? or 8.4V? no sence in having 84V at 1 amp capacity... even tho it would be like 80W... it would be a real shocking suprise when the coil breaks and touches the sidewall

sometimes the keys on my laptop stick it should read 8.4 volts

 

[mcclintock]

You don't need Ohm's Law to find out what batteries to use in a regulated mod, you need the manufacturer's instructions on the required cells. If lesser cells are used, it can not reliably protect them. If I got a mod without this info, I'd probably return it, even though I could calculate it as good as anyone. Of course, the calculations help you understand it and can show the territory.

Thanks Susan!, so if i read that post correctly, an rx200 at 200W would draw 67W of power from each battery. with a minimum voltage of 3V per battery that would mean (67/3) x 0.95 = 23.51A for the max amps per battery. So....if my batteries can supply a continuous current of 23.51A each I can run 200W on any resistance coil?

Reg mods do have limits and some have some loss of performance pushing those limits. However, consider a mod that can supply 2 to 8 volts. That's only a 1:4 range of voltage but power goes as the square, so that's a 1:16 range of power into a particular resistance. It's unlikely that a practical build will exceed its limits unless you're trying to make it difficult.

Thanks edyle!

Just to clarify, and I apologize for these stupid questions, but is there ever a wattage thats too high for a build?, like if im running a 0.05ohm build at 200W what would happen? would it be safe?

And no, I'm not thinking of doing this, just want to gain a better understanding lol.

200W is going to be too high for most coils, atomizers, and vapers... Power and vapor is limited by any one of: wicking, coil surface area, and airflow (not just a setting but actually pulled). A good vape also calls for these 3 items to be in proportion to one another.

.05 ohm also doesn't tell you anything about the build in itself without additional info. It could be huge build suited for really high power, or 2 mm of hair-thin wire.

 

[Daz123]

I found this on a website, looking at the cell type it's asking for a battery with a discharge of 25A yet on reddit and other online forums/websites people recommend a samsung 25R or LGHG2?

 

[Danousa]

Welcome @Daz123 to the ECF family. When I first joined I had a lot of questions (and still do). Question everything, not all sellers are reputable. First figure out if you want to be a "Cloud chaser" or just enjoy the vape without filling the room. Go to a brick and mortar vape shop where you can see and feel the equipment. Do research, go to the vape shop and ask questions. If you know more then the guys there, or they don't have answers, go to another vape shop.

 

[speedy_r6]

I found this on a website, looking at the cell type it's asking for a battery with a discharge of 25A yet on reddit and other online forums/websites people recommend a samsung 25R or LGHG2?

Most people recommend those batteries because they will safely get you to a little over 150w(with a little wiggle room added for safety, they could theoretically go to 192 watts before they are maxed out). Not many people vape at wattages above 150, so using batteries that can deliver significantly more than that doesn't really do much other than reduce the battery capacity.

Realistically, what wattage range do you plan on vaping in? That will be what determines what batteries you need.

 

[suspectK]

haha don't worry I don't plan on building anytime soon, I want to fully understand every single detail before considering these super sub ohm builds. I still don't understand Ohm's Law though. Looking at the online calculator, say I successfully build a coil at 0.2 ohms and I set my mod to 90W. Now that results in a current of 21.2A. That would be total current required yes? so divide that value by 3 to calculate the current draw from each battery?

In regards to the processor not testing battery temperature, does that mean that going over the maximum discharge of your regulated mod would still cause battery vent and a possibility of an explosion?

You don't have to build less than 1 Ohm when you use rebuildable atomizers with regulated mods. If I didn't just get 26awg 316L stainless steel to play around with, I currently would have a build in my regulated mod over an Ohm... I actually preferred to build around 2 Ohms when I was using only regulated mods (vaping around 50 Watts).

Now as far as your questions go, it would depend on the mod. In the DNA 200, as well as rx200, the batteries are connected in series, so there is essentially just one cell to account for..even though there are 3 cells involved. In a parallel battery pack, yes, the current is essentially distributed across each cell in the pack, so you would just divide by the number of batteries in the circuit.

If you have an rx200, I would advise you to marry all 3 batteries together, that are in a set, and have at least one extra set. DO NOT CHARGE YOUR BATTERIES WITH THIS MOD! Until it has been confirmed, an infinite amount of times, do not trust the balance charger in this mod.

It is less likely to happen, but electronics can fail.... Since you are using a rx200, you are using a buck regulator. So you're not just looking at a black and white version of what amount of current is being pulled from the batteries. If this wasn't the case, you wouldn't see Evolv advertising that you could use just 25 Amp 18650's with the DNA200..which was cloned into the rx200.

Here's the datasheet for the DNA 200...which will show you the inputs and outputs.
http://www.evolvapor.com/datasheet/dna200.pdf

regulated mods have "transformers" in them... they can increase the voltage above the batteries standard output... and some can reduce the output voltage lower than what the batteries voltage is...

Don't forget the tap changers!

Did you build that coil in your avatar? I've been wanting to get back into messing around with Tesla coils...throwing some gases into the mix to get some more colors!

 

[Daz123]

Thanks @Danousa, unfortunately I live in Perth, Australia. No vape shops are open here :/, so my only option right now is to pester you guys with my queries haha

@speedy_r6 I honestly don't know much about what wattage range I'm comfortable with, I've only owned a ego style vape device. I've done some research and was hoping to upgrade to the Wismec Realeaux RX200 with a SMOK TFV4 tank, but I also wanted to get into rda's so I did further research and narrowed it down to the Sapor RDA and Velocity RDA for now.

In layman's terms, is it the higher the wattage the greater the flavour and vapor production and the warmer the vape?

 

[Danousa]

Remember Mass Clouds = Mass juice use. I adjust my voltage (I don't have watts) to get the flavor I like. Juices for me have a "sweet spot" I adjust the mod till I get the flavor I like.

 

[Baditude]

In regards to the processor not testing battery temperature, does that mean that going over the maximum discharge of your regulated mod would still cause battery vent and a possibility of an explosion?

I've been an active member of this board for nearly four years, and I've yet to read of a regulated mod which had a battery vent or explode because of going over the limit of the batteries' maximum discharge rate. I'm speaking of the removeable external batteries which are safe chemistry (IMR/INR). The protection circuitry of the processor prevents this from happening.

I have read of regulated mods which use an onboard usb charger catch on fire. I blame this more on a faulty charging mechanism than on the batteries themselves. I'm talking about the internal non-removeable LiPo batteries (which are not safe chemistry).