Once my new VapCell Gold 21700’s are charged I will uploading my internal resistance measurements to the Mooch thread on this battery in case anyone is interested. Since I have no interest in these 35a purple ones, it’s not appropriate here. See some of you over there.
Bench Test Results: Vapcell Purple 3100mAh 35A 21700...appears to be 30T, an incredible 35A cell
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Already done. Folks already complaining about the price.
That's people for you!
The original wrap Samsung’s will be arriving at many vendors both sides of the pond within the next 2/3 weeks and they will be cheaper than the rewraps too so hopefully that will quiet them down a bit!
Although saying that, probably not lol
They will be £12.50 each at Ecoluxshopdirect.co.uk whereas the Vapcell rewraps were £17.99e at one UK vendor, and £31.99 for a pair at another..
Bottom line is it's basically economics 101; The demand for this cell is astronomical so it's no surprise that they had a price to match!
I personally thought the price was a tad high too, but I still bought some because I deemed them well worth the extra cost and I'm glad I did.
The 30T and 40T were available from two vendors here in the States this week but hopefully more soon and in larger quantities to drive prices down. Still an extraordinary deal at the prices they are going for now though considering you get that great performance every day for a couple of years.
BatteryJunction informed me by e-mail that they can't ship the lithium batteries internationally due to Federal regulations. The Vapcell batteries now finally are listed on NKON website, but "out of stock". 
Yep, between the OG Samsung wrap and the Vapcell rewrap, 5-7 different US stores that I know of have had them but here in the UK, only two stores had the vapcell rewrap and they are now sold out, plus as of yet, we British still haven't seen the Samsung wrap but all that changes in 2/3 weeks when at least two vendors will definitely be getting them (Ecolux and vape club)
Btw Mooch, I have been looking at this charger that measures Mah and, most importantly to me, IR as well as being able to charge up to 4 cells at 3A simultaneously, monitor and display cell temperature and a few other nifty features!
I know you couldn't possibly say for sure without testing it yourself but would you say the specs this company claim this charger is capable of are feasible/possible withing a charger....they are for sure impressive...
But...
...most importantly, the reason I think you'll find it most intresting and why I bring it to your attention (besides your hypothetical opinion on it lol) is it is the first charger I have came across that is actually designed to and marketed as taking ALL cylindrical cell types, meaning it actually has 21700 & 20700's listed as being compatible with it.
Oh yeah, it's called the 'Miboxer C4-12'
(They make a cheaper alternative, the C4 II, that has almost all the same features more or less but can only charge cells at 800ma, not 3A. Its £25 on Amazon/$30 on Fasttech)
Link to C4-12 product on their own website;
Charger_C4-12_Smart Charger|Where There is MiBoxer There is Power|MiBoxer Charger
Link to C4-12 listing on Amazon(£44.99) inc their c4 II;
https://www.amazon.co.uk/gp/aw/d/B075X8TJ81/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8&th=1&psc=1
Link to C4-12 listing on good old cheap as chips fasttech ($35!);
$34.65 MIBOXER C4-12A 4-slot Intelligent Battery Charger - LCD display / 3A/1A output / Li-ion/Ni-MH/Ni-Cd battery compatible / EU at FastTech - Worldwide Free Shipping
*#EDIT#*
Mooch, I've since found a full test and analysis on this charger so incase you or anyone else is interested, here's the link to that technical analysis/test/review;
Review of Charger Miboxer C4-12
Btw, Am I correct in thinking that the IR ratings seem way too high because the decimal point is missing in them? Also they must be AC I take it?
Eg, one is stated as 77 mOhm (& 3095mah) but I'm guessing it's actually 7.7mOhm
Another is given as 111mOhm (& 3054mah) which must be 11.1ohm if I'm correct?
I was going to purchase the vapcell internal resistance tester yr1030, see but I could do with a new charger too and although my guess is this charger won't be as accurate on AC IR, it will be hopefully close enough for me to check cell health, authenticity and to compare cells with eachother.
P.s, Although it will all honesty not be a fortune (I'm on disability benefit atm) I will be becoming a Patron of yours in the next few days.
After watching your proposal I insist and it's the right thing to do, not only for all the work you do for our community, but putting up with and always replying politely to this massive pain in the ....!
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Yep, between the OG Samsung wrap and the Vapcell rewrap, 5-7 different US stores that I know of have had them but here in the UK, only two stores had the vapcell rewrap and they are now sold out, plus as of yet, we British still haven't seen the Samsung wrap but all that changes in 2/3 weeks when at least two vendors will definitely be getting them (Ecolux and vape club)
Btw Mooch, I have been looking at this charger that measures Mah and, most importantly to me, IR as well as being able to charge up to 4 cells at 3A simultaneously, monitor and display cell temperature and a few other nifty features!
I know you couldn't possibly say for sure without testing it yourself but would you say the specs this company claim this charger is capable of are feasible/possible withing a charger....they are for sure impressive...
But...
...most importantly, the reason I think you'll find it most intresting and why I bring it to your attention (besides your hypothetical opinion on it lol) is it is the first charger I have came across that is actually designed to and marketed as taking ALL cylindrical cell types, meaning it actually has 21700 & 20700's listed as being compatible with it.
Oh yeah, it's called the 'Miboxer C4-12'
(They make a cheaper alternative, the C4 II, that has almost all the same features more or less but can only charge cells at 800ma, not 3A. Its £25 on Amazon/$30 on Fasttech)
Link to C4-12 product on their own website;
Charger_C4-12_Smart Charger|Where There is MiBoxer There is Power|MiBoxer Charger
Link to C4-12 listing on Amazon(£44.99) inc their c4 II;
https://www.amazon.co.uk/gp/aw/d/B075X8TJ81/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8&th=1&psc=1
Link to C4-12 listing on good old cheap as chips fasttech ($35!);
$34.65 MIBOXER C4-12A 4-slot Intelligent Battery Charger - LCD display / 3A/1A output / Li-ion/Ni-MH/Ni-Cd battery compatible / EU at FastTech - Worldwide Free Shipping
*#EDIT#*
Mooch, I've since found a full test and analysis on this charger so incase you or anyone else is interested, here's the link to that technical analysis/test/review;
Review of Charger Miboxer C4-12
Btw, notice he is using Samsung 21700 30T's to conduct the test. Am I correct in thinking that the IR ratings seem way too high because the decimal point is missing in them? Also they must be AC I take it?
Eg, one is stated as 77 mOhm (& 3095mah) but I'm guessing it's actually 7.7mOhm (must be the 30T)
Another is given as 111mOhm (& 3054mah) which must be 11.1ohm if I'm correct? (SanyoA??)
I was going to purchase the vapcell internal resistance tester yr1030, see but I could do with a new charger too and although my guess is this charger won't be as accurate on AC IR, it will be hopefully close enough for me to check cell health, authenticity and to compare cells with eachother.
P.s, Although it will all honesty not be a fortune (I'm on disability benefit atm) I will be becoming a Patron of yours in the next few days.
After watching your proposal I insist and it's the right thing to do, not only for all the work you do for our community, but putting up with and always replying politely to this massive pain in the ....!
These chargers are truly terrible at measuring IR. I don’t know if it is the AC or DC IR but that 77mOhm number is typical for what they measure.....wayyyyyyyyy off. There is no missing decimal point.
Thank you for your support!
These chargers are truly terrible at measuring IR. I don’t know if it is the AC or DC IR but that 77mOhm number is typical for what they measure.....wayyyyyyyyy off. There is no missing decimal point.
Thank you for your support!
WOW!
Once again, Mooch to the damn rescue, where would we be without you!
So glad i asked, I'm shocked at the inaccuracy now, oh well, the vapcell IR measurer from china for $27 + P&P it is! (I'm too tight to pay $70 from the states and then the annual budget of a small nation on top of that for shipping to the UK lol)
BTW Mooch, would you mind terribly revealing a rough guess when your Sanyo NCR2070C test will be going live here?
Thanks man, I'm really looking forward to it that's all.
WOW!
Once again, Mooch to the damn rescue, where would we be without you!
So glad i asked, I'm shocked at the inaccuracy now, oh well, the vapcell IR measurer from china for $27 + P&P it is! (I'm too tight to pay $70 from the states and then the annual budget of a small nation on top of that for shipping to the UK lol)
BTW Mooch, would you mind terribly revealing a rough guess when your Sanyo NCR2070C test will be going live here?
Thanks man, I'm really looking forward to it that's all.
Perhaps this week.
To all that are interested, I purchased a Vapcell Internal resistance tester (Model: YR1030) directly from Vapcell themselves at UK Vaper Expo Yesterday and upon returning home I immediately started testing all the cells I own, so here are my findings (all results are based on the average from testing 4 cells per cell type and are measured in AC IR):
Sony VTC5a: 10.3mOhm
Sony vtc6: 12.71mOhm
vapcell 18650 2000mah 38a: 7.8mOhm
Sanyo 20700A: 9.3mOhm
Sanyo ncr2070C: 8.31mOhm
iJoy 20700 (5-prong): 11.3mOhm
samsung 21700 30t/vapcell 21700 3000mah 35a: 6.8mOhm
Samsung 21700 40t/vapcell 21700 4000mah 30a: 8.2mOhm
For a laugh i also tested some AA an AAA cells....
Duracell AAA: 139.3mOhm
Duracell AA(Ultra Power): 60.5mOhm
Duracell AA(Plus Power): !33.2mOhm
LMAO!
Li-on Cr2032(flat disc cell used in watches etc): 22.2mOhm
I love this tester, I mainly got it to monitor cell health but also compare performance in cells, its a tad pointless for most average users but ahhh man am I geeking out over it lmao!
Sony VTC5a: 10.3mOhm
Sony vtc6: 12.71mOhm
vapcell 18650 2000mah 38a: 7.8mOhm
Sanyo 20700A: 9.3mOhm
Sanyo ncr2070C: 8.31mOhm
iJoy 20700 (5-prong): 11.3mOhm
samsung 21700 30t/vapcell 21700 3000mah 35a: 6.8mOhm
Samsung 21700 40t/vapcell 21700 4000mah 30a: 8.2mOhm
For a laugh i also tested some AA an AAA cells....
Duracell AAA: 139.3mOhm
Duracell AA(Ultra Power): 60.5mOhm
Duracell AA(Plus Power): !33.2mOhm
LMAO!
Li-on Cr2032(flat disc cell used in watches etc): 22.2mOhm
I love this tester, I mainly got it to monitor cell health but also compare performance in cells, its a tad pointless for most average users but ahhh man am I geeking out over it lmao!
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Your Samsung 40T IR results seem fairly close to my VapCell tests:
NEW VapCell Gold 21700 30A 4000mAh Batteries (Samsung 40T rewraps):
4-20-2018 (from www.18650BatteryStore.com, $18/each)
INTERNAL RESISTANCE measurements, 1 hour after full charge using VapCell YR1030 meter (measures at AC @ 1kHz).
NOTE: IR readings taken, (with 1 hour cooling rests), before initial charge, after full charge, after capacity drain down test, and then full charge again, were all surprisingly very close, little variation. Final results listed are averages of multiple readings.
BATTERY CAPACITY TESTS, using ZKE “EBD-MO2”. Using the 2 amp. discharge setting, and 2.5 volt cutoff.
NOTE: Info from a chart on the VapCell website, lists “Max AC internal resistance: 10 milli-Ohms”.
(*have yet to find any spec sheet on original branded version, Samsung 40T batteries).
#1: IR = 9.13 mOhm. CAPACITY: 4060 mAh.
#2: IR = 9.13 mOhm. CAPACITY: 4007 mAh.
#3: IR = 9.08 mOhm. CAPACITY: 4045 mAh.
The 30T & 40T cells I tested were also Vapcell rewraps, purchased directly from Vapcell at Vaper Expo UK with the exception of two of the 40T's, which I purchased from Fogstar.co.uk.
My Samsung 40T rewraps have gone through a few cycles so that could be the reason for our varying results, however, When testing two brand new 30T's (after initial charge, before any use) against my other 30T's that have gone through between 10 and 20 cycles, the difference was miniscule: 6.78mOhm-6.9mOhm.
New cell Added!
Vapcell 18650 2800mah 25a (Sony VTC5D): 10.4mOhm
**These cells were tested after their first charge and before initial use because I'd only just received them in the post today so I will update once they've been through a few good cycles, just in case it changes/drops**
Actually, a bit disappointed in this cell. Used battery analyzer on DNA75C and found they had 12.566Wh at 15-16A (usual boost range for my TC builds) versus the iJoy's 12.956Wh. Maybe better for mechs, but for 75C at up to 60W boost into a 0.2 SSV build the iJoy (initially, at least) gives me better life.
It’s not the best cell for a regulated device. It hits the hardest of all of them but that’s only taken advantage of in a mech. Try the 40T.
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