[Feature Request] 1-cell Option (26650/18650)

[SICAR187]

Would it be possible to have the option under the "Baterry" for a 1-cell? For example a 66w 26650 : ) or even one 18650? Don't always need the 200w or 133w, but don't want to sacrifice the Escribe capabilities. Got then 66w by dividing 133w 2-cell option, maybe 75w would be better option?

[Xx3dge]

Thedna200 is step down only so a single battery doesn't have enough voltage.

[SICAR187]

Xx3dge said:

Thedna200 is step down only so a single battery doesn't have enough voltage.

Thnx, I didn't know that...maybe this I'll be their new project.

[Spector NS5 RD]

i'm thinking something close to the dna 40 board size and lay out, with the escribe capability. say 60-70 watts, 4.2 volt input, and buck boost topology. they'd def get another slice of the vape market. get on it guys, if yer not already.

[Pathian]

Here's the original explanation of why the DNA200 won't work on a single cell.

John said:

The charger only steps voltage up. The board only steps voltage down, and the internal logic needs at least 5v to run. 

If you run from single cell, which is 3-4.2v, the charger will not be able to control charging, because it can put out a minimum of 4.5 volts. The board would only be able to put out 3v, and at any rate neither system would turn on. 

I'm not saying it isn't possible. I am saying this board can't do it. 

The reference design, with a 3s battery in it, is significantly smaller than a classic Hana, so you don't have to get particularly big to get the feature set. You can even turn the max power down and run a 3s battery that is smaller than an 18650 if you are so inclined. You just can't do it from a single cell with this particular board.