Vapcell new charger usd9.99/pcs,free shipping

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RelakS
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Pete7874 wrote:

The chart they posted (see below) shows them measuring capacity using various current levels, starting with as low as 0.5A and going up to 8A. At 0.5A, their tested capacity is 812mAh. The main difference is their cutoff voltage is 2.5V. Mine is 2.8V, but there can’t be much capacity left there at that point.

!{max-width:100%}https://i.imgur.com/XkTpbjx.jpg!

I have kept 3V in my charger (default value), but according to the graph that also wouldn’t make much difference.

BTW, I just repeated what they wrote on the Ali site:
Typical Capacity 800mAh (0.2C discharge)

will34
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Notice that the “begin volt” is 4.198V. This is almost impossible to achieve even with cells fresh out of the charger, I assume they must have set the termination beyond 4.2V in order to start the test at such high voltage. Probably around 4.25-4.3V.

With the MC3000 you get an option of “d reduce” which is the equivalent of a reversed CV phase for discharging, maybe with a termination current low enough along with the high starting voltage the 800mAh+ capacity can be achieved.

BlueSwordM
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Well, testing chargers discharge down to 2,8V.

If you want full capacity, you need to go down to 2,5V.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Pete7874
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BlueSwordM wrote:
Well, testing chargers discharge down to 2,8V.

If you want full capacity, you need to go down to 2,5V.


Yeah, but I find it hard to believe that 5-6% of the cell’s capacity remains between 2.8 and 2.5V.
contactcr
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When people say down to 2.5/2.8V do they mean under load or not? No one seems to make the distinction but i’m pretty sure it makes a not insignificant difference depending on the rate.

Pete7874
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Under load, I believe.

CRX
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Finally received the two 16340 cells.
Charged then discharged at 1A to give 810mAh and 827mAh.
4.16 resting voltage after one hour.

Performance comparisons:

Vapcell 16340 800mAh vs AWT 16340 550mAh cell.

CRX 47s Atom runtime graph

.

Vapcell 14500 1000mAh vs Windyfire 14500 650mAh cell.

CRX Brass 14500 Runtime graph

.

Vapcell 14500 1000mAh vs Windyfire 14500 650mAh cell.

CRX Mokume LAN runtime graph

.

Vapcell 16340 800mAh vs AWT 16340 550mAh cell.

CRX 47s PK Paladin runtime graph:

djozz
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Nice testing and graphs Thumbs Up Thumbs Up Thumbs Up , with clear winners.

MascaratumB
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djozz wrote:
[…] with clear winners.

U took the words from my fingers Wink
Thanks for the test CRX!
Mine should be arriving next week, and I’m looking forward to use them Wink Thanks to Vapcell Party

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CRX
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Cool Thumbs Up
These tests give a better real life usage perspective on performance rather than just testing the cells in a discharge rig.
The results differ in every run due to temperature etc except the lower level regulated runs.
I must admit seeing it like this makes me start leaning towards regulated drivers more as opposed to just FET driven.
Different cell but here's the FW3A started on Max for comparison too.

FW3A Runtime graph

will34
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Took me a while to realize they were output readings… Big Smile actually I prefer these over discharge rigs graphs if I were to compare 2 cells directly.

CRX
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I’ll put bigger labels on for you next time Big Smile

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contactcr wrote:
When people say down to 2.5/2.8V do they mean under load or not? No one seems to make the distinction but i'm pretty sure it makes a not insignificant difference depending on the rate.

Well, not really. I've conducted a practical DIY test to prove that. I once set a small test led attached direct drive to a couple old li-ion cells which, after a little bit more than a couple days of discharge (I could still see the die lit), I put my finger on the stuff and connected one of the cells which somehow wasn't making contact and wooosh! The led got again a lot brighter (and my eyes Big Smile were hurting). Since I was using flimsy wire and the cells were going to be recycled anyway I didn't cared if one cell was going to recharge the other and etc, they were initially at less than ≈40% anyway. So I decide to wait again, and after ≈3 additional days, with the led emitter very dimly lit, I disconnected the stuff. I could have let it go even lower if you will, but I think there is no point. This simulates a slightly below 2.5V discharge at ultra low discharge rate.

Wanna know the result? After some resting time (2 or 3 hours maybe, can't recall for sure right now) one of the cells measured 2.59V in my multimeter and the other scored just a tiny bit below 3V. As you may guess the 2.59V unit was the one which was discharged first. 

 

Smile 

contactcr
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dont batteries have a cut off around 2.5V anyways that’s supposed to kick in as a last resort?

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contactcr wrote:
dont batteries have a cut off around 2.5V anyways that’s supposed to kick in as a last resort?

No, unless they are protected.
And protection circuits are not bulletproof either, f.e. they can fail to notice very low current.
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A bit off topic question. May someone help me identifying the OEM of this cell:

 

 

I got a very good deal of Lii-100 charger plus button top cell. Since I knew no way it was an NCR18650B I decided to remove the button top, and that is what I got after a nice while of play with my rotary tool.

The cell scored 3256.5mAh in my Lii-500's less optimistic channel which, according to my reference data, is equivalent to a ≈3336.5mAh Henrik score. More or less, of course. Which means that cell may be some “34” model of an unknown (to me) manufacturer. May someone shed some light on this?

Thanks. Smile

 

Cheers 

vapcell Dennis
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CRX wrote:

Finally received the two 16340 cells.
Charged then discharged at 1A to give 810mAh and 827mAh.
4.16 resting voltage after one hour.


Performance comparisons:


Vapcell 16340 800mAh vs AWT 16340 550mAh cell.


CRX 47s Atom runtime graph


.


Vapcell 14500 1000mAh vs Windyfire 14500 650mAh cell.


CRX Brass 14500 Runtime graph


.





Vapcell 14500 1000mAh vs Windyfire 14500 650mAh cell.


CRX Mokume LAN runtime graph


.


Vapcell 16340 800mAh vs AWT 16340 550mAh cell.


CRX 47s PK Paladin runtime graph:

Thanks very much for your test, but i can not open the link,
could you help me?Thanks

vapcell Dennis
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Barkuti wrote:

A bit off topic question. May someone help me identifying the OEM of this cell:


 



 


I got a very good deal of Lii-100 charger plus button top cell. Since I knew no way it was an NCR18650B I decided to remove the button top, and that is what I got after a nice while of play with my rotary tool.


The cell scored 3256.5mAh in my Lii-500’s less optimistic channel which, according to my reference data, is equivalent to a ≈3336.5mAh Henrik score. More or less, of course. Which means that cell may be some “34” model of an unknown (to me) manufacturer. May someone shed some light on this?


Thanks. Smile


 


Cheers 

I know this battery factory made in china

SKV89
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Thanks CRX for the very useful comparison graphs. These new Vapcells are a game changer for 16340 and 14500 lithium ion flashlights. Now I am more interested in these small flashlights with the more usable capacities offered by these new Vapcell cells.

vapcell Dennis
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SKV89 wrote:
Thanks CRX for the very useful comparison graphs. These new Vapcells are a game changer for 16340 and 14500 lithium ion flashlights. Now I am more interested in these small flashlights with the more usable capacities offered by these new Vapcell cells.

Thanks you very much, Smile

vapcell Dennis
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CRX wrote:
vapcell Dennis wrote:
Thanks very much for your test, but i can not open the link, could you help me?Thanks

The links are just to the runtime graph images.

Just check, i know we can not open link in china Crying Crying

This site can be opened before, and mooch’s photo sharing is also this site. Tired

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CRX wrote:
That’s some miserable mind controlling sht.

Blacklist Facepalm

djozz
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It is a pity that the images from the OP are gone Sad

djozz
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I received my 2 Vapcell 10440 batteries and although I can not do real tests, I compared runtime/output on my Maratac copper AAA hotrod. Well, I tried but quite screwed it up. I did the first runtime with an old Efest cell but let it run for 4 minutes without checking temperature. After 4 minutes without thinking I tried to twist it off with the following result:

Yes you can recognise the Maratac knurling in that blister.
After that, a ledwire had unsoldered itself from the ledboard (that one was never soldered very pretty because of a too short wire I must confess) and a dark spot appeared on top of the led dome, so I needed to repair the flashlight (provisionally resolder the wire and scraping off the black bits off the led dome) before starting the second test with the Vapcell 10440. So much for the clean comparison Facepalm

Then after 100 seconds into the Vapcell test, the same ledwire decided to unsolder itself again from the ledboard. The Maratac needs some decent re-doing everything now but here’s the data that I managed to gather. Take it with a grain of salt, also because a new cell is compared to a cell that is 3 years old already but I think that the Vapcell really is the better performer despite all that.

I can do a mAh test on my Opus still, but thusfar Vapcell’s ratings have been decent.

djozz
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My post count is over 15000 now:
1) so much for having a life Facepalm
2) dear time for a giveaway Shocked

CRX
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Got to keep the hotrods hand cooled at least during the tests. Nice blister Big Smile
Looked good at the start though.

vapcell Dennis
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djozz wrote:
p=.

I received my 2 Vapcell 10440 batteries and although I can not do real tests, I compared runtime/output on my Maratac copper AAA hotrod. Well, I tried but quite screwed it up. I did the first runtime with an old Efest cell but let it run for 4 minutes without checking temperature. After 4 minutes without thinking I tried to twist it off with the following result:

Yes you can recognise the Maratac knurling in that blister.
After that, a ledwire had unsoldered itself from the ledboard (that one was never soldered very pretty because of a too short wire I must confess) and a dark spot appeared on top of the led dome, so I needed to repair the flashlight (provisionally resolder the wire and scraping off the black bits off the led dome) before starting the second test with the Vapcell 10440. So much for the clean comparison Facepalm

Then after 100 seconds into the Vapcell test, the same ledwire decided to unsolder itself again from the ledboard. The Maratac needs some decent re-doing everything now but here’s the data that I managed to gather. Take it with a grain of salt, also because a new cell is compared to a cell that is 3 years old already but I think that the Vapcell really is the better performer despite all that.

I can do a mAh test on my Opus still, but thusfar Vapcell’s ratings have been decent.

Dear djozz

Thanks you very much for your test Big Smile

Samples have send to hkj for the test

Let us waitting Smile

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contactcr wrote:
dont batteries have a cut off around 2.5V anyways that’s supposed to kick in as a last resort?

depends on the cell
yes, ICR protected cell
and
no, INR unprotected cell
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Is the Vapcell IFR26650 2600mAh 55A/75A available? It is grabbing some attention at E-CigaretteForum in this thread I opened: Vapcell IFR26650 2600mAh 55A/75A (red, LiFePO4) reviewed.

Tad off topic of course, just to claim the attention of vapcell Dennis.

 

Cheers Smile 

jon_slider
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this is what is available near me
https://www.illumn.com/catalogsearch/result/?q=vapcell
but you would need to google your area, Im in California, not Spain.

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