Help with vv box mod

[Mart123]

Hi all. Just after alittle help please.
I have made a couple of torch mods and now wanting to make a vv box mod. I have the madvape vv regulator and was wondering if it has to use 2 18650s or if it can use 1?
I would like to use only 1 but all the vv box mods I've seen use 2 18650s or 2 14500s.

Thanks in advance.

 

[Dougiestyle]

It is a step-down regulator. You have to use 2- 3.7v batteries in series for it's use. In my experience, if you use this regulator circuit with 2-18650s, you will hav a very large boxmod. You can save some real estate by using 18500s or 18350s or 16340s, but you sacrifice battery capacity, the smaller you go.

 

[Mart123]

Thankyou for the reply. I thought that might be the case. It's only a mod for the house so the size isn't a problem, plus I have some 18650s kicking around. Do you know of a vv regulator where only one bettery is needed?

 

[WillyB]

That's a very inefficient regulator, I wouldn't bother with 16340s or 18350s.

 

[Mart123]

The one in my lavatube seems to do the job pretty well, that regulator would be perfect. A voltage display that size would be good aswell.

 

[Dougiestyle]

Significantly different reg with more consistency would be the DNA 12 from evovlvapor.com. It is variable wattage (heat). I have given-up on VV since the DNA 12 came out. It's not cheap, but totally worth it IMO. It has a tiny footprint. It boosts voltage/amps from a single high-drain IMR/Hybrid li-on. It produces up to 15W of heat. It's all I use, now. I have a A7 RBA on my DNA 12-equipped bottomfed box with micorUSB charging. All-day, consistent vapor!

See for yourself: Our Products « Evolv

Don't forget to add the microUSB charger!

I use the Panasonic CGR18650CH for best results.

 

[Mart123]

Don't really know much about variable wattage. Something I will have to look into. Thanks for the link. I'll check it out.

 

[Dougiestyle]

Watts are equivalent to the heat that you sense from the vapor. Let's say you like 2ohm cartos on 4.5volts. That works out to 9 watts. With the DNA 12, you could have the setting at 9watts and switch to a 3ohm carto/atty and it will produce the same 9 watts. As it is variable via a potentiometer, you can up your watts as you feel the need/want, but it's consistent from start to finish, regardless of what you have attached. It's especially nice for me, as I use a RBA on my mod, so I don't really have to measure resistance of my coil. I can wrap different coils and the vapor is the same temp whether I have 3, 4, 5, 6, 7 wraps of the coil.

 

[Mart123]

That sounds much better. Will this be the same for the vision/stardust clearo's? As I rewick and coil them myself?

 

[Mart123]

Wow your right about not cheap! Not sure where to get one in the uk aswell? Thanks for all the info, it's been a great help.

 

[BJ43]

Watts are equivalent to the heat that you sense from the vapor. Let's say you like 2ohm cartos on 4.5volts. That works out to 9 watts. With the DNA 12, you could have the setting at 9watts and switch to a 3ohm carto/atty and it will produce the same 9 watts. As it is variable via a potentiometer, you can up your watts as you feel the need/want, but it's consistent from start to finish, regardless of what you have attached. It's especially nice for me, as I use a RBA on my mod, so I don't really have to measure resistance of my coil. I can wrap different coils and the vapor is the same temp whether I have 3, 4, 5, 6, 7 wraps of the coil.

I beg to differ with you but 9 watts off of 3 wraps is not the same as 9 watts off of 7 wraps of the same wire. On 3 wraps the wire is much hotter to produce 9 watts than when the 9 watts is spread out over 7 wraps.

 

[Mart123]

Well that's confused things.

 

[BJ43]

Well that's confused things.

http://www.e-cigarette-forum.com/fo...its-all-about-wire-temp-read.html#post7632993

 

[WillyB]

http://www.e-cigarette-forum.com/fo...its-all-about-wire-temp-read.html#post7632993

WHAT!!!!!

You mean we don't vape watts?????

 

[Mart123]

Thanks for the link but I think my head as just exploded.