Mysterious & extremely rare 100% original 18650 VTC6A Battery restock

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Barkuti
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FaintReality wrote:

The resistance was 103 ohms. Seems a bit high, especially in comparison to my Efest 14500 (29 ohms) and my EBL 14500's (all four are 49-54 ohms). Thoughts?

Analyzing chargers usually are rather bad at measuring battery internal resistance. Contact resistance is easily burdened by oxidation or debris. I also guess you meant to say mΩ instead of Ω, don't you? Wink

 

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FaintReality
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Barkuti wrote:

FaintReality wrote:

The resistance was 103 ohms. Seems a bit high, especially in comparison to my Efest 14500 (29 ohms) and my EBL 14500’s (all four are 49-54 ohms). Thoughts?

Analyzing chargers usually are rather bad at measuring battery internal resistance. Contact resistance is easily burdened by oxidation or debris. I also guess you meant to say mΩ instead of Ω, don’t you? Wink


 


XTAR Dragon VP4 plus uses probes to measure resistance and they are accurate when comparing to my fluke. I’m assuming I got old stock before they upgraded their button top welding process.

Barkuti
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If that is so I would remove the button top, carefully precision sand down any welding bulges and then rewrap those cells FaintReality.

 

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vapcell Dennis
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FaintReality wrote:
Barkuti wrote:

FaintReality wrote:

The resistance was 103 ohms. Seems a bit high, especially in comparison to my Efest 14500 (29 ohms) and my EBL 14500’s (all four are 49-54 ohms). Thoughts?

Analyzing chargers usually are rather bad at measuring battery internal resistance. Contact resistance is easily burdened by oxidation or debris. I also guess you meant to say mΩ instead of Ω, don’t you? Wink


 


XTAR Dragon VP4 plus uses probes to measure resistance and they are accurate when comparing to my fluke. I’m assuming I got old stock before they upgraded their button top welding process.

Old version spot welding process, button top 14500 1000 mah, AC impedance less than 60 milliohms

the 14500 button top is very small , no good contacts, and the AC internal resistance meter is very slow to check, so there is no full inspection.

DC internal resistance measurement is inaccurate and vulnerable to contact internal resistance

But they’re basically oks.

There may be very few weld defects.

We can only improve the welding process, deeper breakdown and less oxidation as far as possible.

vapcell Dennis
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Barkuti wrote:

If that is so I would remove the button top, carefully precision sand down any welding bulges and then rewrap those cells FaintReality.


 


If it is a capacity battery, such as 1A current output, the button top internal resistance has little effect.

battery with pcb will add more AC IR,

If it is a high-power battery, it will have a greater impact.

For example, if the AC impedance of samsung 30T, 7mOhm is changed into 10mOhm by adding a button top, then the continuous discharge is only about 30A.

Barkuti
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I understand vapcell Dennis, but FaintReality reports twice the internal resistance of an EBL 14500 for his Vapcell 14500. I know his figures are far from real DC resistance values but to me that means his Vapcell 14500 is likely well above 200mΩ of internal resistance. So pretty bad. Being so removing the button top and using a rotary tool with a grinding bit to gently fix the welding remnants is a wise choice.

 

The Light Innocent I am

FaintReality
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Barkuti wrote:

I understand vapcell Dennis, but FaintReality reports twice the internal resistance of an EBL 14500 for his Vapcell 14500. I know his figures are far from real DC resistance values but to me that means his Vapcell 14500 is likely well above 200mΩ of internal resistance. So pretty bad. Being so removing the button top and using a rotary tool with a grinding bit to gently fix the welding remnants is a wise choice.


 


Using the Xtar Dragon VP4 plus, I got the following results from my current 14500 button tops:

EBL #1 – 54 mohm
EBL #2 – 49 mohm
EBL #3 – 49 mohm
EBL #4 – 54 mohm

Vapcell (gold) – 103 mohm

Efest (2018 purple) – 29 mohm

So although the Xtar may not be 100% accurate, it is more than sufficient to use for comparison sake, which raised a red flag when comparing the Vapcell to the Efest and the cheap eBay EBL batteries.

I would remove button top and re-wrap, but these batteries are for a Sofirn SF14 V2.0 which requires button tops. I may just do it out of curiosity sake…

vapcell Dennis
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FaintReality wrote:
Barkuti wrote:

I understand vapcell Dennis, but FaintReality reports twice the internal resistance of an EBL 14500 for his Vapcell 14500. I know his figures are far from real DC resistance values but to me that means his Vapcell 14500 is likely well above 200mΩ of internal resistance. So pretty bad. Being so removing the button top and using a rotary tool with a grinding bit to gently fix the welding remnants is a wise choice.


 


Using the Xtar Dragon VP4 plus, I got the following results from my current 14500 button tops:

EBL #1 – 54 mohm
EBL #2 – 49 mohm
EBL #3 – 49 mohm
EBL #4 – 54 mohm

Vapcell (gold) – 103 mohm

Efest (2018 purple) – 29 mohm

So although the Xtar may not be 100% accurate, it is more than sufficient to use for comparison sake, which raised a red flag when comparing the Vapcell to the Efest and the cheap eBay EBL batteries.

I would remove button top and re-wrap, but these batteries are for a Sofirn SF14 V2.0 which requires button tops. I may just do it out of curiosity sake…

Sincerely apologize, please let me know your order number, I will call Ail Express customer service to contact you, compensation to you.

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DC IR during 3.5A discharge:

Flat top 14500:

Button Top 14500:

I just got the 4 wire cell holder today. Still not entirely sure how relevant or useful this information is.

Barkuti
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Vapcell fellows please correct the thread's title. “Ture rating for you on flashlight batteries,Buy the battery now to send free zipper case” is wrong for many reasons. I understand the culprit here is a language barrier, so let me help you. “Ture” is a misspelling; “batteries” are just batteries, no need to specify “for flashlights”, “for vaping mods” nor Wink “for anal hair clippers”; the last part is the worst one, I guess what you want to mean is you send a free zipper case with each pair, don't you? Since you seem to sell your batteries in pairs this is what I would write in the title instead:

 

Vapcell, true rating for you on batteries. Buy now and get a free zipper case!

 

Cheers 

The Light Innocent I am

CRX
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Well…

After nearly a month of exciting anticipation waiting on the new Vapcell 16340 cells to be delivered the package finally arrived.

Just the package.

An empty box.

Oh, except for some packing material to keep the air inside from being damaged.

Very thoughtful Thumbs Up

Facepalm

I need a little help here I think.

Barkuti
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CRX wrote:

After nearly a month of exciting anticipation waiting on the new Vapcell 16340 cells to be delivered the package finally arrived.

Just the package.

An empty box.

Oh, except for some packing material to keep the air inside from being damaged.

Very thoughtful Thumbs Up

Facepalm

 

Big Smile 

The Light Innocent I am

g_damian
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Mine 16340 were missing from the package too. Vapcell offered to resend them.

CRX wrote:
Well…

After nearly a month of exciting anticipation waiting on the new Vapcell 16340 cells to be delivered the package finally arrived.

Just the package.

An empty box.

Oh, except for some packing material to keep the air inside from being damaged.

Very thoughtful Thumbs Up

Facepalm

vapcell Dennis
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Barkuti wrote:

Vapcell fellows please correct the thread’s title. “Ture rating for you on flashlight batteries,Buy the battery now to send free zipper case” is wrong for many reasons. I understand the culprit here is a language barrier, so let me help you. “Ture” is a misspelling; “batteries” are just batteries, no need to specify “for flashlights”, “for vaping mods” nor Wink “for anal hair clippers”; the last part is the worst one, I guess what you want to mean is you send a free zipper case with each pair, don’t you? Since you seem to sell your batteries in pairs this is what I would write in the title instead:


 


Vapcell, true rating for you on batteries. Buy now and get a free zipper case!


 


Cheers 

Dear Barkuti
Thank you very much for your advice. We will improve ourselves.
Have a nice weekend

CRX
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g_damian wrote:
Mine 16340 were missing from the package too. Vapcell offered to resend them.

Interesting. What country? This is more than coincidence now.
What say ye Vapcell?
Vapcell has apparently sent me replacements too so we will see what happens but if I don’t get them soon then yeah…

Big Smile

Here is another test of the Vapcell 14500 with a 8×7135 driver in the meantime:

vapcell Dennis
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CRX wrote:
g_damian wrote:
Mine 16340 were missing from the package too. Vapcell offered to resend them.

Interesting. What country? This is more than coincidence now.
Vapcell has apparently sent me replacements too so we will see what happens but if I don’t get them soon then yeah…

Big Smile
Facepalm

I hope you will receive it as soon as possible.

Do you know how to delete previous posts on the forum?Thanks

CRX
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There is a delete button on each of your posts but not for threads.
You need to ask Admin to delete threads.

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moderator007 wrote:
I received my Vapcell 16340’s today. I ran a 3 amp discharge test on the icharger from fully charged. I got 638mah at 12 min and 45 secs down to 3v. Down to 2.75v, I got 726mah at 15 min and 25 secs. This test was done at a constant discharge of 3 amps and there’s no doubt this cell will make 800mah or more at a 1 amp or less discharge. When I started the test the voltage stayed decently high. It started at 3.7v under the load and fell rapidly to 3.6v where it slowly crept down to 3.5v after about 3 mins. The cell done very well holding around 3.5v for awhile. We have a new 16340 King, less sag and more capacity Crown . Thanks Vapcell for improving on these smaller size cells. Great Job Thumbs Up .

sounds like a great option!

and I see on page one:

vapcell Dennis wrote:
05/04/2019

The new product releases vapcell 16340 batterys with high capacity. Battery with button top , which is

more suitable for flashlight. If you are interested in review or test, please contact me by private letter. and this battery will also sell in Ali-express

I volunteer to do a real world test in my Jetbeam TCR-1, Jetbeam RRT-01, Utorch S1 Mini, Olight Ti S Mini, Novatac, and MecArmy PT-16.

Only One of those lights has built in Low Voltage Shutoff, so Im volunteering to live dangerously, and promise to tell all about it. Wink

I applaud the arrival of this new buttontop INR offering:

contactcr
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They are in stock at Illumn now

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I see a high current 14500. Oh yeah, finally something worthwhile in this format. Party

will34
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Where can I order the 10440? Can’t find them in your aliexpress shop.

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contactcr wrote:
They are in stock at Illumn now

Thank You! Smile
Barkuti
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https://www.aliexpress.com/store/product/1-dollar-coupon-High-capacity-power-RCR123A-Vapcell-16340-800mah-7A-CDR-3-7v-Rechargeable-Li/1084158_33000319786.html

Why only button top? Batteries are not manufactured that way. I know the answer and despite I can sort of accept it, it is not of my liking. 
If anything a wide button top is better, providing extra contact surface.

 

Cheers Smile 

The Light Innocent I am

KawiBoy1428
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Barkuti wrote:

https://www.aliexpress.com/store/product/1-dollar-coupon-High-capacity-power-RCR123A-Vapcell-16340-800mah-7A-CDR-3-7v-Rechargeable-Li/1084158_33000319786.html


Why only button top? Batteries are not manufactured that way. I know the answer and despite I can sort of accept it, it is not of my liking. 
If anything a wide button top is better, providing extra contact surface.


 


Cheers Smile 

Thumbs Up or a Raised Flat Top like the VTC5A…

KB1428 “Live Life WOT

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Barkuti wrote:
a wide button top is better

not for me

my lights with physical reverse polarity protection rings, (example Jetbeam RRT-01) dont make contact with flat tops and wide button tops.

Why dont you want to use button top?.. They work in everything, unlike flat and wide tops..

Barkuti
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jon_slider wrote:

Why dont you want to use button top?.. They work in everything, unlike flat and wide tops..

Here are the reasons behind button tops:

  • Original equipment manufacturer (OEM) concealing.
  • Lack of reverse polarity protection in devices.

I didn't say I wouldn't use button tops. I do not support the reasons behind, though.

 

Cheers Party 

The Light Innocent I am

Barkuti
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KawiBoy1428 wrote:

Thumbs Up or a Raised Flat Top like the VTC5A...

I have an envelope chock-full of Murata VTC5A cells, thanks for reminding me.

They're plain (not raised) flat tops without a doubt, just checked.

 

Wed, 05/15/2019 - 02:10

The Light Innocent I am

vapcell Dennis
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Agro wrote:
I see a high current 14500. Oh yeah, finally something worthwhile in this format. Party

Thanks

Could you help me?

Why did all my pictures disappear?

I quoted links to pictures that could be displayed before.

Now it’s gone.

raccoon city
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vapcell Dennis wrote:

Thanks

Could you help me?

Why did all my pictures disappear?

I quoted links to pictures that could be displayed before.

Now it’s gone.

In what post?

vapcell Dennis
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jon_slider wrote:
moderator007 wrote:
I received my Vapcell 16340’s today. I ran a 3 amp discharge test on the icharger from fully charged. I got 638mah at 12 min and 45 secs down to 3v. Down to 2.75v, I got 726mah at 15 min and 25 secs. This test was done at a constant discharge of 3 amps and there’s no doubt this cell will make 800mah or more at a 1 amp or less discharge. When I started the test the voltage stayed decently high. It started at 3.7v under the load and fell rapidly to 3.6v where it slowly crept down to 3.5v after about 3 mins. The cell done very well holding around 3.5v for awhile. We have a new 16340 King, less sag and more capacity Crown . Thanks Vapcell for improving on these smaller size cells. Great Job Thumbs Up .

sounds like a great option!

and I see on page one:

vapcell Dennis wrote:
05/04/2019

The new product releases vapcell 16340 batterys with high capacity. Battery with button top , which is

more suitable for flashlight. If you are interested in review or test, please contact me by private letter. and this battery will also sell in Ali-express

I volunteer to do a real world test in my Jetbeam TCR-1, Jetbeam RRT-01, Utorch S1 Mini, Olight Ti S Mini, Novatac, and MecArmy PT-16.

Only One of those lights has built in Low Voltage Shutoff, so Im volunteering to live dangerously, and promise to tell all about it. Wink

I applaud the arrival of this new buttontop INR offering:
!{width:70%}[img]https://i.imgur.com/P6hwYtTl.png[/img]!

Thanks,
We are very pleased with your comments.

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