Test/review of Vapcell INR21700 5000mAh (Purple) 2018

HKJ · 2018-12-13T09:37:29.000Z

What I am talking about is something like this: Index of reviewed multimeters technical list
That table is not official and will not be update (it will probably be removed soon).

It is easy enough to mark the table and copy it to a local spreadsheet.

ZoomieFan · 2018-12-13T09:41:38.000Z

Something like that would be a huge step forward!

shadockan · 2018-12-14T05:56:22.000Z

vapcell Dennis:

shadockan:

SKV89 …….

…… but it would be quite interesting to see a comparison between Vapcell 21700 5000 …… and …… Panasonic NCR 21700 A 5000 ……

I’m right Vapcell Dennis ?

8^{) 8}) :sunglasses:

vapcell 21700 5000mah 10A ，sanyo NCR21700A rewarpped， the same battery

I know Dennis.
That’s why I wrote it this way.
It is very good for a company to tell the truth.

It is not a bad idea for the company to say which battery it uses under its cover.
On the contrary.
This makes consumers show confidence in this company.

Bravo Vapcell Dennis and thank you.
Go on like this …

For those who do not know, Panasonic and Sanyo are the same company.
Panasonic bought Sanyo a few years ago.

I wrote this so as not to confuse someone watching me I was going to mention it
Panasonic NCR21700A
and Dennis to write about
Sanyo NCR21700A

It’s the same battery.

ZoomieFan · 2018-12-14T06:07:39.000Z

shadockan:

It is not a bad idea for the company to say which battery it uses under its cover.
On the contrary.
This makes consumers show confidence in this company.

And… less sales.
Rewraps are for generating extra cash.
Manual:
“Just buy something that fits.”
versus
“Bad cells may damage your vap, cause injury or even death. See below for a list of approved vapcell dealers”

shadockan · 2018-12-14T06:22:29.000Z

True ZoomieFan.
But think about this:

A company that does not say what battery it uses can cause a serious accident to the user who will rely on what the cover says.
Even more Amperes are listed on the cover that can discharge a battery if I know what the manufacturer says, I will use the battery with the data reported by the manufacturer.

I do not need to mention older bad situations that we all have seen on a video or even a personal level ……

JasonWW · 2018-12-14T06:24:38.000Z

ZoomieFan:

And… less sales.
Rewraps are for generating extra cash.

What? You make no sense.

ZoomieFan · 2018-12-14T06:33:43.000Z

JasonWW:

ZoomieFan:

And… less sales.
Rewraps are for generating extra cash.

What? You make no sense.

Not? I think it’s easy to understand.

vapcell 21700 5000mah 10A ，sanyo NCR21700A rewarpped， the same battery Smile

If everyone buys the Sanyo, Vapcell would make no $ on battery sales.
If everyone buys rewraps then capcell does make some extra $ on battery sales.
Really it’s that easy.

shadockan · 2018-12-14T06:37:29.000Z

I think ZoomieFan means … less revenue for the rewrap company.
If I know which battery is, why should I get the rewrap?

That’s what I think it means.

He’s right … if he means that …
But it’s rare to copy a rewrap company …
I do not see a gain as opposed to the profit it will have if I copied an authentic battery …
…… as a cover I mean of course ……

(ZoomieFan …… you are fast … hahaha)

ZoomieFan · 2018-12-14T06:39:54.000Z

shadockan:

True ZoomieFan.
But think about this:

A company that does not say what battery it uses can cause a serious accident to the user who will rely on what the cover says.
Even more Amperes are listed on the cover that can discharge a battery if I know what the manufacturer says, I will use the battery with the data reported by the manufacturer.

I do not need to mention older bad situations that we all have seen on a video or even a personal level ……

Sure. My post was just a short statement. No in depth discussion.
I 100% agree there are very bad cells that are not even worth looking at. Everyone reading HKJ’s tests know that.

My point is/was: Sanyo, Samsung, and a few others make very good cells.
The company could have advised those cells.
Rewarpping a Sanyo doesn’t improve its quality somehow.

shadockan · 2018-12-14T06:43:58.000Z

ZoomieFan:

shadockan:

True ZoomieFan.
But think about this:

A company that does not say what battery it uses can cause a serious accident to the user who will rely on what the cover says.
Even more Amperes are listed on the cover that can discharge a battery if I know what the manufacturer says, I will use the battery with the data reported by the manufacturer.

I do not need to mention older bad situations that we all have seen on a video or even a personal level ……

Sure. My post was just a short statement. No in depth discussion.
I 100% agree there are very bad cells that are not even worth looking at. Everyone reading HKJ’s tests know that.

My point is/was: Sanyo, Samsung, and a few others make very good cells.
The company could have advised those cells.
Rewarpping a Sanyo doesn’t improve its quality somehow.

Exactly my friend …

ZoomieFan · 2018-12-14T07:06:50.000Z

shadockan:

I think ZoomieFan means … less revenue for the rewrap company.
If I know which battery is, why should I get the rewrap?

That’s what I think it means.

Exactly. More brands means a bigger chance to find a good deal

He’s right … if he means that …

He does.

But it’s rare to copy a rewrap company …

Not copying the rewrap (Vapcell) company.
Just Vapcell rewrapping Sanyo and then sell it as their own. That way they make some cash instead of only Sanyo.

I do not see a gain as opposed to the profit it will have if I copied an authentic battery …

I can imagine there is a profit in it. Numbers as a way of explanation.
Sanyo sells cells for $2/each.
A famous company rewarps them, adds some marketing claims and sells then for $10/each.
Then a copycat rewraps the Sanyo’s with the same wrap and sells them for $5/each.

Or even more illegal, buy junk batteries at $0.50/each and then rewrap and cell as something good and famous.

shadockan · 2018-12-14T07:43:09.000Z

Dennis I have experience similar to what you wrote.
I bought authentic batteries … and it was only authentic as a name.

This is the problem.
I use long enough authentic … but also rewrap batteries.
Many times I buy rewrap to avoid monkey batteries …, knowing of course exactly what battery I buy ……
That’s why I do not mind if she writes Sanyo or Vapcell the cover …

ZoomieFan …
I do not disagree with you …
Just copy a copy, I do not think it’s the best if you want to sell ….

Vapcell, Enercig, Keeppower, Orbtronic, Fenix, AW, Redilast …… and others are all companies that put different batteries under their covers …
Mostly from good battery manufacturers.
These companies do not consider them the same value as some others … that we all know …. No need for names I believe …

Vapcell, for some time now, seems to want to show the world her good face.
For me, this is absolutely positive.

In the past I have been fighting with some company rewrap here.
The reason was that he tried to fool us that he was making batteries, and many people from here in our hands had our batteries, we opened them and we mentioned that it is the Samsung 25R.

How can I now trust such a company?
On Enercig, I will give confidence because on top of her covers or even on the company’s website if you get in, you will see that in many batteries it has original covers and has just placed a card in the battery with its name.
So I know from the beginning what I will buy …

That’s what I liked and what Dennis wrote ….
The truth …

shadockan · 2018-12-14T07:41:11.000Z

vapcell Dennis:

ZoomieFan:

shadockan:

I think ZoomieFan means … less revenue for the rewrap company.
If I know which battery is, why should I get the rewrap?

That’s what I think it means.

Exactly. More brands means a bigger chance to find a good deal

He’s right … if he means that …

He does.

But it’s rare to copy a rewrap company …

Not copying the rewrap (Vapcell) company.
Just Vapcell rewrapping Sanyo and then sell it as their own. That way they make some cash instead of only Sanyo.

I do not see a gain as opposed to the profit it will have if I copied an authentic battery …

I can imagine there is a profit in it. Numbers as a way of explanation.
Sanyo sells cells for $2/each.
A famous company rewarps them, adds some marketing claims and sells then for $10/each.
Then a copycat rewraps the Sanyo’s with the same wrap and sells them for $5/each.

Or even more illegal, buy junk batteries at $0.50/each and then rewrap and cell as something good and famous.

Haha, this is too exaggerated.

Distributors know what batteries are made and can only operate at a small profit.

The market is transparent.

As a result, fewer and fewer rewarp batteries will appear in the market in the future.

After all, reprocessing also consumes processing costs.

In a transparent market, it is not dominant. :person_facepalming:

Dennis ……
Remember the Gearbest rewrap batteries of the AWT ….
There were AWT batteries and AWT rewrap rewrap batteries.

There are many more ………….

Pajda_cz · 2018-12-14T08:17:42.000Z

vapcell Dennis:

vapcell 21700 5000mah 10A ，sanyo NCR21700A rewarpped， the same battery

I am quite sure that Dennis means vapcell 21700 5000mah 15A = sanyo NCR21700A rewrapped. Vapcell 21700 5000mAh 10A are based on LG or Samsung cells.

Pajda_cz · 2018-12-14T08:58:43.000Z

vapcell Dennis:

Vapcell 21700 5000mah 10A ，LG M50 rewarpped

Yeah, all Vapcell cells are definitelly rewarpped love english

Tom_E · 2018-12-14T13:23:09.000Z

vapcell Dennis:

Pajda cz:

vapcell Dennis:

vapcell 21700 5000mah 10A ，sanyo NCR21700A rewarpped， the same battery

I am quite sure that Dennis means vapcell 21700 5000mah 15A = sanyo NCR21700A rewrapped. Vapcell 21700 5000mAh 10A are based on LG or Samsung cells.

Yeah，you are great Vapcell 21700 5000mah 10A ，LG M50 rewarpped

Ok, I certainly understand better why rewraps are important. For example SONY does not like their cells being sold individually, outside a complete pack.

And I guess Dennis has to be as clear as mud about what this cell is a rewrap of. But no matter how you rewrap it, it's barely 15A, probably rated lower by the original manufacturer, and certainly never meets it's rated capacity. The droppage of capacity between 0.2A and 5A has me a little concerned, but for a lower performing cell, maybe it's more common.

At this point, I regret buying this one piece and won't be buying again. It won't keep me from buying Vapcells though, because I'm very pleased with many of their other offerings, like the rewrapped VTC5D. Bottom line though through testing like what HKJ does here, we can positively identify the good rewraps if all variants are tested.

Agro · 2018-12-14T13:45:47.000Z

Except that you still risk that at the time of your purchase the wrapped cell is different from the one reviewed. And even if its not…how can you know if the next batch the rewrapper got was of the same grade?

Tom_E · 2018-12-14T14:44:58.000Z

Agro:

Except that you still risk that at the time of your purchase the wrapped cell is different from the one reviewed. And even if its not…how can you know if the next batch the rewrapper got was of the same grade? :person_facepalming:

Well the best thing to do is buy from a known good reseller like Liionwholesale.com - his support is phenomenal, and tests every batch that he gets in. I always will prefer buying cells from him based on availability and price (reasonable that is). imrbatteries.com is also good, personally don't know if their support is as good though.

But as mentioned before, you could be at as much risk buying a rewrap or branded cell - dunno if the branded cell is a fake or recycled as well.

Tom_E · 2018-12-18T12:00:34.000Z

vapcell Dennis:

Thank you very much for your understanding and support. Refer to the KHJ test vapcell 21700 5000mAh 15A, he said that discharge to 2.5V may reach 5000mah. But it needs to be noted that this is a high-power battery, you can compare HG2, VTC6, the voltage is not inferior. It may be less than 5,000 mah, but it’s important that high voltage platforms, discharged to 3.2V, can get more capacity.

He discharges to 2.8V, not 3.2V, and the difference between 2.5V and 2.8V is typically very small. His conclusion is: "This cell is a good cell for large capacity and can deliver a fair amount of current without being a high current cell."

You call it high-power, he calls it not a high current cell. Again, the way my Vapcell 21700 performs, where it drops voltage immediately off the charger implies there's a problem with the cell. If this was a heavily used cell, I'd get rid of it. Again, I have no other Vapcell 21700 to compare it with and I won't spend the money on any more to find out.

I'm hoping if any other owners can report if there's behaves the same or not - does it drop well below 4.20V after a charge, in a few minutes, next day?

toobadorz · 2018-12-18T16:33:58.000Z

Tom E:

I’m hoping if any other owners can report if there’s behaves the same or not - does it drop well below 4.20V after a charge, in a few minutes, next day?

I also own two of this cell (I think this should be Sanyo NCR21700A, the 21700 cell used by Tesla). My answer is, yes, the voltage of this cell does drop below 4.20V within 1 hour, especially after a few cycles of use. But I also found similar drops on Sanyo NCR18650GA, so I regard this as a normal phenomenon.

This cell performs noticeably better than its competitors (5000mAh 21700 cells, Samsung 50E and LG M50), even when all of them have been cycled for a few times.

But, I don’t like the recessed top of this cell, because that introduces quite some more resistance in flashlights since the springs cannot be fully compressed. I must add a 2mm thick copper pillar to compensate this, otherwise its performance in some flashlights will be even worse than Samsung 50E, LG M50, while it should be better. With that copper pillar, it indeed performs better than the other 5000mAh 21700 cells. However, adding that copper pillar can be dangerous in some flashlights — it can cause short circuit! One of my cell died immediately because of that. Vapcell really should add a new top to this cell, otherwise, it is not that useful.