Was about to lose it when I got an email from vendor apologising and saying that a new unit would be shipped to me immediately. Thanks for the emotional support @Khan83 !
Haha , any time bud
The Cuboid is wired in series. It means (as I understand it) that the voltage is increased to double that of one battery, but the mAh remains as if for just one battery. In practice you will get more battery life because of other efficiencies, but not nearly double that of one battery. In parallel, the voltage stays the same as for one battery, but the mAh is doubled.
So, seems to me, if you want battery life you need a parallel wired mod. If you want more power you need a series wired mod.
Usually some detective work on images will reveal a clue. In the cuboid case theres a + and a - on the batt door, for the newb's that means its series fed.
In your example, 2x 2900mah 18650s means you have an effective 8.4V @ 2900mah to the internals.
So basically you are saying if i use my cuboid at 4.0volts and use a single 18650 mod with a 2900mah cell at 4.0volts. They will basically last the same amount of time?
But also in my head. if im using my cuboid at 4 volts. It will be drawing 2volts per cell as opposed to a single 18650 drawing 4.volts. Would that not mean in theory the cells would last twice as long?
Could be wrong . Im no electrical engineer lol
Nope didnt say that, you did, I just told you how your batts are configured in that device.
The onboard chip manages current not voltage, it sees the total combined voltage of both batteries and cannot separate some voltage from one cell and some from the other.
A series dual batt has a higher combined voltage than a single cell and therefore needs less current to give the same power output as a single cell.
Less current = less heat and less recharge cycles therefore longer lifespan.
Just an update, my new favourite vendor sorted me out "no questions asked", got my new unit 10 minutes ago, threw in those batteries, and shit got real! I'm in love with Kangertech all over again! Get this cuboid talk off my beautiful Kbox 200w thread! Haha! 
EDIT - ALthough this cuboid talk is helping me try to understand my next problem. I'm using two LG brown turds in this KBox, how high can I push the Watts to (not using TC mode). I have a 0.28 dual coil build on it. If I fire it at 50W, it outputs 3.8v.
In short, how many volts can I output before I reach a danger area? I'm guessing almost double of what I could on a single-cell mod? Maybe @Andre can advise me?
EDIT - ALthough this cuboid talk is helping me try to understand my next problem. I'm using two LG brown turds in this KBox, how high can I push the Watts to (not using TC mode). I have a 0.28 dual coil build on it. If I fire it at 50W, it outputs 3.8v.
In short, how many volts can I output before I reach a danger area? I'm guessing almost double of what I could on a single-cell mod? Maybe @Andre can advise me?
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If you had a cuboid it would tell you how many amps you are drawing lol.Just an update, my new favourite vendor sorted me out "no questions asked", got my new unit 10 minutes ago, threw in those batteries, and shit got real! I'm in love with Kangertech all over again! Get this cuboid talk off my beautiful Kbox 200w thread! Haha!
EDIT - ALthough this cuboid talk is helping me try to understand my next problem. I'm using two LG brown turds in this KBox, how high can I push the Watts to (not using TC mode). I have a 0.28 dual coil build on it. If I fire it at 50W, it outputs 3.8v.
In short, how many volts can I output before I reach a danger area? I'm guessing almost double of what I could on a single-cell mod? Maybe @Andre can advise me?
Once you Compare that to how much amps your battery is rated at then you can figure out how many volts you can fire before your battery explodes.In short your current set up.
So your drawing 13.3Amps at 50W
If you go at 70W you drawing 15.8. Which if your battery is rated at 20Amps. I would suggest should be the limit.
Heres a calculator to work it out .
http://www.rapidtables.com/calc/electric/power-calculator.htm
Awesome! So then how do I get to see what 200W does? By increasing the resistance of my coil?If you had a cuboid it would tell you how many amps you are drawing lol.
In short your current set up.
View attachment 44393
So your drawing 13.3Amps at 50W
If you go at 70W you drawing 15.8. Which if your battery is rated at 20Amps. I would suggest should be the limit.
View attachment 44394
Heres a calculator to work it out .
http://www.rapidtables.com/calc/electric/power-calculator.htm
LOL its bit confusing. but just play around with the calculator. it depends how many volts your mod will fire.eg.
If you use a 0.3ohm build. It would take 7.7Volts to hit 200W. But as you can see your amp draw will be 25.8A With batteries rated at 20Amps which then =blown off hand. So i think you would need to build a 0.3 coil and get 35A-40A batteries.
Make sense?
Anyone can correct me if im wrong but i only figured the whole amp thing out a few days ago hahaha
Thanks! I definitely appreciate the help!
I held one at a vendor today. Man it's a nice mod that. Very well made IMO. Enjoy her!Just an update, my new favourite vendor sorted me out "no questions asked", got my new unit 10 minutes ago, threw in those batteries, and shit got real! I'm in love with Kangertech all over again! Get this cuboid talk off my beautiful Kbox 200w thread! Haha!
EDIT - ALthough this cuboid talk is helping me try to understand my next problem. I'm using two LG brown turds in this KBox, how high can I push the Watts to (not using TC mode). I have a 0.28 dual coil build on it. If I fire it at 50W, it outputs 3.8v.
In short, how many volts can I output before I reach a danger area? I'm guessing almost double of what I could on a single-cell mod? Maybe @Andre can advise me?
Just in case anyone stumbles across this thread and looks at the above discussion, we didn't take into account the fact that there are two batteries in series, so essentially I can fire up to 120W safely. Despite trolling the forums for the right thread, @shaunnadan posted a really good one here...
http://www.ecigssa.co.za/am-i-safe-shauns-guide-to-battery-drain.t19201/
http://www.ecigssa.co.za/am-i-safe-shauns-guide-to-battery-drain.t19201/
to answer your question on how to get to 200w
there are 3 things to consider when entering the 200w club > the battery safety, the mod and the build
the battery safety section is the easiest to answer : you cant
there is no way possible you can get to 200w output with your current batteries safely. they have too low amp ratings. they key thing is that your series mod needs 26.4A and you only have 20A. switch to a higher amp rated battery and this problem goes away.
i'm not kicking you out of the 200w club, science is ! lol
the mod is a bit harder to answer :
technically, your mod cannot deliver a true 200w. its impossible to squeeze that much of juice out of any 2x 18650 batteries. so what it does is pulse width modulation (PWM) to 200w (similar to cuboid, kooper, ipvli3, snowwolf, etc) for the serious cloud chasers you can feel this pulsing. the best way of describing it is a constant ramp up and down of power (like tc but without the dry hit prevention)
this is not your fault...
to get more than 151w constant out of a mod you need much higher voltage (11v to be exact) and the only way possible is with a 3 battery mod or one that uses a lipo pack (cue in the rolo fan music !)
the build :
basically you need to build low enough that when you turn up the wattage (voltage is also increasing) the maximum voltage is not exceeded. so if your kbox can only push out 7.5v then the highest resistance coil you can build is 0.28ohms. if you built to 0.29ohm then it would need 7.6v to give you 200w which the mod cannot deliver.
Using the standard evic vt skin for now
Hey if it works then don't knock it !
Ingenious
I just love mine too bits
I hate the thought of scratches on my mod, so this will totally do for now! Thanks!
Using the standard evic vt skin for now
Or maybe a Nebox sleeve... Has close dimensions and a similar layout...
Using the standard evic vt skin for now
Nebox - 86mm tall / 58mm long / 22.8mm wide
Kbox - 84mm tall / 56mm long / 22mm wide
*Rushes out emails to vendors....
Tossing a spanner in the sleeve works is this diy 'tuber making his own phone sleeve from silicone and cornstarch.
I thought it might work equally well on a mod.
I thought it might work equally well on a mod.
Oooh!!! I like!
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