turbocad6

twisted pair with a ground shield? I really love the dna200 and I can now def see the sense in going 3s, now 2s is awesome too, but a dna40 form factor with escribe functionality sounds like it would be a huge hit, still many, maybe even the majority that are really stuck to the 18650 form factor...

separate module with 4 wires to the board instead of 2 so it can be placed remotely...

thanks guys. steamer I just got this thing working yesterday so haven't ran through a whole battery yet, but with the 3s 600 it should give a bit more life than the old aw 1,600 high drain 18650's we used a little over a year ago, with the 1,000 pack it should be well above even todays best single 18650 in battery life. I'm building another one from desert ironwood as a dual 18650, that one should really have killer battery life but will be slightly larger than this one laguz, thanks very much for those thoughts, I do appreciate it, but even the smallest at 5mm is still way too big to work for me, plus I'm going to have at least 2 different sized swappable doors so they need to quick release fully from the mod, not just fixed hinges

well it's not finished, but it's alive and vaping, and I'm loving this chip. it's much better temp control than the dna40's I think... the dna40's would hard throttle the power in and out when the power level was set way above the power level required, there have been many times I've felt it hunting up and down but this dna200 does it seamlessly. even if I just leave the mod pinned at 200watts it vapes wonderful with no perceived throttling, just a perfect even smooth vape. I've had my 4 dna200 chips for weeks now but this is the first time I was able to actually vape one of these part of me wanted to just throw it in a box and vape it, but this thing took a lot of hours of tinkering to get it as small as possible. it's a bottom feeder and the battery is on mini deans and a pair of jst's. I built it to be modular, so I can use a slim battery for day to day use but have the option of putting a fatter battery for extended vape times. the main body of the mod is 43mm wide X 86mm tall and 24mm thick. the battery door adds to the thickness, 7mm for the 3s 600 T pack or 17mm for the full sized 1,000 pack. I haven't finished either door setup yet and I haven't been able to finish a T cell pack because I damaged the solder tabs on a few of the cells and I'm waiting for new ones. right now I'm running it with the 3s 1,000 pack held on with tape it's a little fat but still fits nice in the hand even with the big battery. with the T cell pack it's pretty tiny, smaller than my dna40 squonkers the main body is carved from a block of african blackwood, the inner cradle is machined from a block of aluminum. the main input power wire is 16ga silver coated becu and the atty wiring is 12ga silicone wire. the bottle is a standard 6ml reo bottle. I kept trying to keep it small and compact as I built it, but now that it's almost done and vaping I surprised myself with how small it winded up being. here's a bunch of pics some showing size next to other mods and some showing the inner construction and how this thing fits together here's the 600 cells that make the T pack. one fits down between the chip and the bottle, the rear door extension is only 7mm for this pack here's a few pics of the internal construction and wiring the rear door mounting frame is made from titanium sheet because it's so thin and tiny but needs to be strong, the rear doors will be matching african blackwood. still figuring out exactly how I'm going to work out the door mounting but ideally I want a secure but easy to remove door with no visible hardware that's it, this lil squonk box is kicking ass right now and I only broke one screen in the whole process

ah, yeah, didn't even think of that...

if we're using 33% less power wouldn't the amp draw also be reduced a similar amount?

would it be possible to select between 2s & 3s mode right from the mod? I'm guessing auto detecting 2s vs 3s can't be done? my thoughts are, now I'm using a 3 cell configuration and the mod isn't too thick for everyday use, but I could make an extended use pack that's a 2s2p and add 25% battery life as an extended battery option, and of course have an extended battery door to match. kinda like an extended battery in a cell phone type design. having to change config in the pc isn't so bad but it would be really slick if it could be selected from the mod itself for on the fly switching too and from an extended use battery.

thanks vapingbad... yeah I've looked at all the pre configured packs I can and they're all just not ideal for what I have in mind. I do realize that they need to be somewhat matching but I guess my main concern is, would just using brand new cells that are hopefully from the same batch be good enough or should I buy a whole bunch of cells and then buy a good battery tester to try and match them closer? I'm thinking just using new cells from the same batch should be good enough but then again truth is even ordering all of them at the same time is no guarantee that the cells will all be from the same batch anyway. also, as far as cells "puffing", how much extra room is required to allow for this? I was thinking of adding 10% extra space for clearances, would that be enough? should I almost "expect" the lipos to puff after a bit or is this not so common really? I can almost see my wooden mod cracking open like a walnut when they puff up as much as some of the pics I've been seeing of puffed up lipos is this only something to worry about when cells are abused or should I be concerned about this even when staying within operating specs?

I always assumed you couldn't extend this much at all, otherwise a longer ribbon would have been used long ago. it would be awesome to be wrong in that assumption though .

ok so I'm looking to build a bottom feeder reo style mod with the dna200 and battery space is a big deal.need to keep it as compact as possible while still housing a 9ml bottle of juice, anything I do with those 950- 1,000 packs out there most are using is going to wind up being a big fat mod. don't want that, so I'm using smaller individual cells. first one I'm doing is 3X 600mah 35C. I'll probably limit this one to 150 watts or so now I'm thinking that I should be able to just wire up the 3 cells as a 3s pack is wired and connect up the balancing leads. I realize that ideally the cells should be as matched as practical to be balanced, but using brand new cells I don't think it should be too much of a problem? should I bother putting more effort into cell matching? should I charge and discharge and recharge each cell individually before stringing them together? I'm thinking they'll just balance out once connected together anyway. what about some module thing I've heard is needed when 3 18650's are used, why wouldn't they also work by just wiring them up as a 3S pack is wired? what is this add on module? ok now second part of the question is, what about using 6 individual cells? I mean using 3 pairs of cells that are parallel pairs then wired in series and tapped for the balancing leads, would charge as 3 pairs and each pair would naturally be balanced to each other. would this be fine to do?