Battery question re dna30

[bamani71]

I have a question for the experienced modders out there. I have seen DIY with the dna30 and the batteries used seem to be limited to lipo or 18650. Is there any reason why an 18490 couldn't be used?

 

[sallysouthampton]

In theory there is no reason why an 18490 or even an 18350 couldn't be used. The only problem is the current the batteries can suppy, which in turn means sub-ohm builds would not be possible.

 

[bamani71]

I'm fine with that as i don't build below 1.5. But a nice compact case opens more opportunities for design!

 

[dr g]

The only appropriate 18490/18500 that has an appropriate amp capacity for a DNA30 is the AW.
There are no 18350s that have an appropriate amp supply capacity.

 

[bamani71]

That's the brand I use regularly so I was hoping they might be usable. Thanks!

 

[sallysouthampton]

The only appropriate 18490/18500 that has an appropriate amp capacity for a DNA30 is the AW.
There are no 18350s that have an appropriate amp supply capacity.

Calculating the current required based in a 1.5 Ohm build at 30W, the result is 4.47A. Even allowing an extra 1.5A as specified as the input current for the DNA30, the total current is only 5.97A. The purple Efest IMR18350 is rated at 10.5A. Based on that information it is possible to build an 18350 DNA30 mod.

 

[dr g]

Calculating the current required based in a 1.5 Ohm build at 30W, the result is 4.47A. Even allowing an extra 1.5A as specified as the input current for the DNA30, the total current is only 5.97A. The purple Efest IMR18350 is rated at 10.5A. Based on that information it is possible to build an 18350 DNA30 MOD.

http://www.e-cigarette-forum.com/forum/blogs/rader2146/3500-calculating-battery-drain-current.html

It needs at least 10A continuous, Evolv recommends 14A+. The Efest 18350 is marginal at best, they tend to overrate.
I forgot about the Efest 18500, i think that should be OK.