WIP DNA20 Eclipse Tin Steampunk-ish Mod

[retird]

ran across this...thought of you (with all your batts)........

Joyetech eVic 3400mAh battery

http://www.gotvapes.com/index.php?main_page=product_info&products_id=1516

 

[bapgood]

ran across this...thought of you (with all your batts)........

Joyetech eVic 3400mAh battery

I haven't been a big fan of the round cells, but I would surely try them

 

[retird]

Edited my last post...

 

[WillyB]

ran across this...thought of you (with all your batts)........

Joyetech eVic 3400mAh battery

Panasonic NCR18650B 3400mah Li-Ion for eVic [gv-Panasonic18650-3400mah-Batt] - $14.95 : GotVapes.com, E-cigarette Supplies - Atomizers Cartomizers Mods Juice and more

Hmm, You always seemed so concerned about a cell's Max Discharge Rating, never thought I'd se ya linking to Li-Ions.

I do like how Joye lists them as Sanyo.

Whoever is responsible the 3400's do seem a step up from Panasonic's rather middling performing 2900/3100s. The eVic though is less powerfull than the DNA20.

Here's a 5A test (they won't test these cells over that).

The 3400mAh seems like no no big deal for our needs. How far do most of these boosters actually drain the cell? If we use 3.2V for our cut-off (I believe it may be higher than that) the Sanyo seems as good as the 3400 and a pair can be had for less that one 3400 from GotHypes.

To be on the safe side if vaping at higher watts with the DNA20 these 20A 2000mAh Samsungs would be be a good choice.

HID Battery Samsung 20A 18650 20R INR18650 20R 2000mAh 3 6V Li ion Rechargeable | eBay

Good prices too.

 

[bapgood]

I would love to see one these graphs between a good round cell and comparable spec lipo flat cell. Not sure if its in my head but it sure seems to me that the lipo's are much better. A Nivel would be nice for this feedback.

 

[DrMA]

I would love to see one these graphs between a good round cell and comparable spec lipo flat cell. Not sure if its in my head but it sure seems to me that the lipo's are much better. A Nivel would be nice for this feedback.

There's no way a round cell would hold up against a comparably spec'd, high-quality flat LiPo. I use one of these (re-purposed from an older helicopter) in one of my mods (DNA20) and it completely blows out of the water a 1300mAH 18650 AW IMR.

The max discharge current these batts can support, as well as voltage sag under load is all about internal resistance (aka IR, or impedance). A decent small LiPo cell around 1000mAh will have an IR less than 10mΩ, whereas an AW IMR tends to be above 50mΩ if you're lucky, and a TrustFire 3000mAh 18650 is pushing 250mΩ. Larger, 45C+ rated flat LiPo cells can be as low as 1mΩ IR.

The Sky LiPos in the first post are actually pretty good for the price and many people in the RC hobby fly them with great results.

 

[retird]

Just ran across these while surfing.......just threw it out there for feedback....thx for yours.....I do like to err on the side of safety....I use flat li-po's in all my mods....funny that I've not bought a APV in about 2 years but was curious about the eVic technology and bought one just to fiddle with....novel idea with the firmware upgrade capabilities (and all the other bells and whistles)....fun to fiddle with, but doesn't see much vape time (never liked tube style APV's).....all my other vape gear is Evolv technology (Darwin, DNA12 and DNA20D)....and at 8.4 watts all is good.....

Hmm, You always seemed so concerned about a cell's Max Discharge Rating, never thought I'd se ya linking to Li-Ions.

I do like how Joye lists them as Sanyo.

Whoever is responsible the 3400's do seem a step up from Panasonic's rather middling performing 2900/3100s. The eVic though is less powerfull than the DNA20.

Here's a 5A test (they won't test these cells over that).

The 3400mAh seems like no no big deal for our needs. How far do most of these boosters actually drain the cell? If we use 3.2V for our cut-off (I believe it may be higher than that) the Sanyo seems as good as the 3400 and a pair can be had for less that one 3400 from GotHypes.

To be on the safe side if vaping at higher watts with the DNA20 these 20A 2000mAh Samsungs would be be a good choice.

HID Battery Samsung 20A 18650 20R INR18650 20R 2000mAh 3 6V Li ion Rechargeable | eBay

Good prices too.

 

[retird]

Looks like the same batt I use just with a different name....

There's no way a round cell would hold up against a comparably spec'd, high-quality flat LiPo. I use one of these (re-purposed from an older helicopter) in one of my mods (DNA20) and it completely blows out of the water a 1300mAH 18650 AW IMR.

The max discharge current these batts can support, as well as voltage sag under load is all about internal resistance (aka IR, or impedance). A decent small LiPo cell around 1000mAh will have an IR less than 10mΩ, whereas an AW IMR tends to be above 50mΩ if you're lucky, and a TrustFire 3000mAh 18650 is pushing 250mΩ. Larger, 45C+ rated flat LiPo cells can be as low as 1mΩ IR.

The Sky LiPos in the first post are actually pretty good for the price and many people in the RC hobby fly them with great results.

 

[bapgood]

The max discharge current these batts can support, as well as voltage sag under load is all about internal resistance (aka IR, or impedance). A decent small LiPo cell around 1000mAh will have an IR less than 10mΩ, whereas an AW IMR tends to be above 50mΩ if you're lucky, and a TrustFire 3000mAh 18650 is pushing 250mΩ. Larger, 45C+ rated flat LiPo cells can be as low as 1mΩ IR.

The Sky LiPos in the first post are actually pretty good for the price and many people in the RC hobby fly them with great results.

I'm a big fan of Turnigy Nano-Tech batteries, I'm currently using a Turnigy nano-tech A-SPEC 6000mah 1S 65~130C and can say its hard to use anything else as I never have to worry about the battery as long as I charge it every few days.

I understand about "internal resistance (aka IR, or impedance)" but the majority of vapors aren't drawing a significant amount of current so that should somewhat minimize the effect that the IR has compared to true high drain loads as in RC.

I'm not real sure how would be best to test it (besides keeping some documentation and using different batteries with a Nivel), because you would want to put intermittent vape level loads.

 

[bapgood]

Good to know....I haven't had any trouble with the ribbon or screen during normal handling.

Dear Mrs Karma (you lovely and dear reaper of fortune),
I know I'm not always the best person in the world, but I like to think that I would fall in the above average category. Is it possible that you have the wrong address? I will gladly submit dna/blood/finger print samples for analysis. If there has not been a mistake, is there anything I can do expedite the balance of right and wrong?

Sincerely
Yours truly...........WITH ANOTHER BROKEN SCREEN!!!

I have no one to blame but my self, as I made the comment and then proceeded to be a little less than cautious

Thank goodness the DNA's are instock!!! All my future screens will likely get a backing plate of some kind.

 

[d9mel]

Man that sucks! You might have to talk to them about making a bap-proof version

Is it the screen cracking or the ribbon braking off?

 

[xtcriott]

Pretty awesome man. Lookin good!

 

[bapgood]

Man that sucks! You might have to talk to them about making a bap-proof version

Is it the screen cracking or the ribbon braking off?

This one broke clean where the ribbon goes into the screen. At first I couldn't figure out what happened (I keep the fuse out these days ), so I threw in a fuse and an old carto and it fired. After looking closer sure enough it was separated, a little more pressure and it broke clean. I was too angry to take pics.

Thinking back I think I know when it happened

 

[jmarkus]

talk to brandon, he was super helpful and offered me a replacement after i told him i cracked one of my screens. hes so awesome.

 

[DrMA]

I'm a big fan of Turnigy Nano-Tech batteries, I'm currently using a Turnigy nano-tech A-SPEC 6000mah 1S 65~130C and can say its hard to use anything else as I never have to worry about the battery as long as I charge it every few days.

I understand about "internal resistance (aka IR, or impedance)" but the majority of vapors aren't drawing a significant amount of current so that should somewhat minimize the effect that the IR has compared to true high drain loads as in RC.

I'm not real sure how would be best to test it (besides keeping some documentation and using different batteries with a Nivel), because you would want to put intermittent vape level loads.

Well, I vape at an average of 15W with 1.3Ω coils. This means a current around 4.5A at the battery end (factoring in 90% efficiency). If the battery IR is 100mΩ, this means a voltage drop under load of 0.45V, which is totally unacceptable in my book.

PS: sorry to hear about your screen mishap. I totally sympathize. Next time, I'll be gluing my ribbon cable at the screen and the PCB ends with thick CA to provide some support, before I do anything with the DNA 20.

 

[bapgood]

Well, I vape at an average of 15W with 1.3Ω coils. This means a current around 4.5A at the battery end (factoring in 90% efficiency). If the battery IR is 100mΩ, this means a voltage drop under load of 0.45V, which is totally unacceptable in my book.

PS: sorry to hear about your screen mishap. I totally sympathize. Next time, I'll be gluing my ribbon cable at the screen and the PCB ends with thick CA to provide some support, before I do anything with the DNA 20.

Thanks!

About the voltage drop....don't get me wrong I totally agree with you....but when using something like the DNA that shouldn't effect what is being applied to the atty....unless I'm totally misunderstanding something.

 

[bapgood]

talk to brandon, he was super helpful and offered me a replacement after i told him i cracked one of my screens. hes so awesome.

Yeah I have talked to Brandon earlier about the first one and then again this morning, he has been super awesome!!! Which is part of the reason why I just ordered another one.

 

[jmarkus]

yeah, ive only returned one cracked screen so far...and i think if i broke a second id probably just go ahead and order a new one a pay full price. just dont wanna take advantage of such a nice guy.

 

[bapgood]

You might have to talk to them about making a bap-proof version

I'll do better.....I'll design it for them

This is what I fantasize about when I go to my happy place....yes a hot female in white lace is dangling it in front of me just out reach.

 

[mre777]

Yeah that FFC/FPC connector would be really nice and save a lot of people some trouble.