any brainboxes know how high i could run a ivp3 li on 1 batt

[banditruss]

hi all 
does anybody know how high i could run a ipv3 li on 1 battery (165w upgrade to 200w) thinking of buying to make into sqounk it whether to remove 1 battery or to make new wood box for it and use internals...like the idea of new box and keep with dual batteries could run 200w then ...............and any ideas why the dna200 needs a 3s lip battery for 200w and this only needs 2 x 18650's ? was going to do dna200 but the lipo size put me off...other option is to use the sig 75w as thats single battery ...but only 75w :S

thanks for any help russ 

[b1mble]

I'd reckon 50-70W is as far as I'd want to go on a single 18650. Many manufacturers seem to reckon that the maximum discharge current of 18650s is rather higher than the cell manufacturers do. If your cell has a 20A rating, that is a maximum of 4.2x20=88W from a fully charged cell. The current draw can only go up as the voltage drops. And this assumes the regulation circuitry doesn't have any power losses. These are probably in the 10-20% bracket so now we are looking at 22A to get 88W.

You really would be better finding a suitable lipo as they are designed for very high discharge rates. I have one in front of me slightly larger than a pair of 18650s that is rated to 348A continuous discharge.

[banditruss]

my only problem with all of these battery configs are i use a 2800mah 35a (yes efest found then better than 25r's) in slightly less than a day so with 18650' i could swap out rather than recharge it seems the 3s lipos are to big to fit into a sqounk unit it would end up being really big which is why i was thinking of other ways of getting a high power tc sqounker.....thx for info to be honest i thought it would have have around the 70 mark so wasnt to far away think itll have to be 2 18650's or tring to find a small enough high capacity lipo did have a look but got a bit bamboozled by all the specs on them ....

so anybody know what the actual specs for a 3s lipo id need i presume 1000mah to get capacity but what other specs to run the dna 200  should i be looking for ?
cheers

[Deleted]

Sorry to disappoint you but Efest make some totally ridiculas claims and are in fact re wrapped cells that are likely to have not made the grade with any of the leading manufacturers like Samsung, LG .

Plenty of info on this in the forum, where Ripshod, Vaping Bad etc have discussed this at length. I am not trying to be funny, but you really need to get a good understanding of ohm's law if your going to start pushing things to the limit.

Especially now that your thinking of heading in the 200w direction, or pushing a single battery.

Cheers

[Deleted]

Also Li poly is a totally different ball game, get it wrong and you could end up with a house fire or injury, they are capable of delivering a lot of power, that won't tolerate mistakes, have a look on You tube for Li Poly battery venting!

[banditruss]

hi mate yeah read all that but they are fine in the dna40's and yes your right i wouldnt think of using them in a 200 build either the dna then lipo, or the ipv3 li id use vtc5 i was merely pointing out the amount of capacity i need to last a day to get some idea of specs for the lipos thx

[banditruss]

lol cross thread ....just thought somebody who has already built a dna200 with the capacity i need, would be able to tell me the specs i needed...exactly down to the reason you point out as i have found all the different specs confusing and now am completely lost....i just dont want to get get it wrong

[Deleted]

Loads of variables as to why one battery lasts longer than another, can be as simple as you set vaped one at a higher wattage than another.

I just got a bit concerned when I read the post as it sounded like you were going to start pushing it but didn't realise the pit falls.

( ps I am no expert but I am sure either Ripshod VapingBad can go a lot further into it than I could ever.

Steam Engine web site is excellent for understanding all the trickery with Batteries, coils etc.

Cheers

[banditruss]

no probs just trying to think of best way to get high power sqounk first thought dn200 but the battery situation put me off ...so thought of converting something like the ipv3 li in all likelihood still using 2 batteries and making a new box for it ...just wondered out of interest what difference 1 battery would make as to how far to pus it ...not at likly to do it as it seem to defeat the object so down to 2 battery ipv3 li converted to sqounk with new wood box or back to trying to find the right lipo for the dna 200...dont know why but i find it strange they dont give you required battery specs for it ,apart obviously capacity..personnel preference to be fair if i could find out what battery i needed id go dna200 but there seems to be quite alot of varying opinions..in what people have used when ive looked round the net
but thx for concern..no worrries of me setting myself on fire ...i just wont do it until im confident about which battery i need hence the ipv3 idea...
cheers

[Deleted]

A Li poly for use in the DNA 200 will be constrained by the actual mods internal space, using a 3's pack ( I think there's word 2's may be able to be used but with a reduction in out put, not sure on this though)

Take a look at what Windows has been doing, he will have had to source batteries for his builds that would have to fit, yet also give a reasonable Vape time before recharging.

Also I think Vapingbad made his own, and yet again he will have had to source a battery that fits the specs of his mod

cheers

[Deleted]

I think Windows received a shape ways 3D printed Squonk casing for the DNA200, maybe worth looking at that.

[decoy]

lipo 3s has strange mah rateings,because it has 3 cells its 3 times the mah
ie a 1000mah s3 is actually 3000mah aparently
as far as i can gather
the main prob with 3 cell lipos is charging them as they need some sort of balanced charging thingamajig or bad things hapen

[banditruss]

thx guys ill start a new thread in the modders section with better title

[Deleted]

Aug 15, 2015 11:40:27 GMT decoy said:

lipo 3s has strange mah rateings,because it has 3 cells its 3 times the mah
ie a 1000mah s3 is actually 3000mah aparently
as far as i can gather
the main prob with 3 cell lipos is charging them as they need some sort of balanced charging thingamajig or bad things hapen

The Evolv board has in built balance charging on board as far as I am aware, your correct on the individual cells needing to be kept balanced as nasty things happen if they are not. The only reason I know all this is I used them for years on R/C Aircaft  using 2,3and 4 cell Li polys

[decoy]

Aug 15, 2015 12:16:53 GMT car147 said:

Aug 15, 2015 11:40:27 GMT decoy said:

lipo 3s has strange mah rateings,because it has 3 cells its 3 times the mah
ie a 1000mah s3 is actually 3000mah aparently
as far as i can gather
the main prob with 3 cell lipos is charging them as they need some sort of balanced charging thingamajig or bad things hapen

The Evolv board has in built balance charging on board as far as I am aware, your correct on the individual cells needing to be kept balanced as nasty things happen if they are not. The only reason I know all this is I used them for years on R/C Aircaft  using 2,3and 4 cell Li polys

i used them in rc cars as they were so much better than petrol in every way 
after looking long and hard at the dna 200 i dont think ill get one till its easy to swap batts(i likes small  lol)