Review request for HKJ [Rechargeable Batteries]

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Pajda cz
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HydrAxx wrote:
Pajda cz wrote:
My informations about Panasonic cells:

BE – 1. generation of Tesla Model S 85 cells with carbon anode (unconfirmed)
BM – 2. generation of Tesla Model S 85 cells with C-SiO anode (parameters confirmed by direct comparsion by Tesla 85 cells (MY2016) and many cycle life tests in my lab)
BD – is BE or BM technlogy based cell without bottom vent (unconfirmed)

BF and BL cells are based on other technology, I think BF and BL both are C-SiO anode succesors produced by Sanyo of an old Panasonic NCR18650B. (unconfirmed)


Do you have information about NCR18650PD, NCR18650PE and NCR18650PF?

Only a guess that it is the evolution/modification of the same 2900mAh technology. I have personal experiences only with PF cell which is an old fashion Panasonic low DCIR cell with great cycle life. (PF has lower DCIR than BM and slightly better cycle life, but it is also slightly more expensive USD/kWh). PD seems to me as PF with bottom vent. I heard about PE for the first time from you.

Here you can find more info and comparsion sheet between PD and PF from Panasonic https://batterybro.com/products/panasonic-pf-ncr18650pf-2900mah-10a

BatteryBro wrote:
The Panasonic PF was first introduced in 2013 as an upgrade to the Panasonic 18650PD. There are three main differences, a slight (20-30mAh) capacity increase, a wider top-cap for easier welds, and a CID (protection against over-charge) which has been tweaked to be more sensitive. This battery is older, but is still readily in production as it has proven reliable.
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Found a source of genuinely wrapped chinese (?) OEM 26650 cells:

26650 - OTHER section @ Lucky Electronics Store AliExpress

 

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This should be better than any 9V battery that you tested. I see no seller, but maybe you could get a sample pair?

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Agro wrote:
This should be better than any 9V battery that you tested. I see no seller, but maybe you could get a sample pair?

The specifications do not look very good. I do not like 3.7V nominal, 4.2V charge voltage and 2.75V cut-off for 9V batteries, they are specifications for a single cell.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

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Hmm…3.7V? I missed that. Indeed that doesn’t look good.

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For clarification purposes, Henrik's latest LiFePO4 cell review -Enerpower 18650 3.2V 1800mAh (Blue)- confirmed a well seated suspicion I had with regards to the brand-name OEM behind the 3x wide leg tops: Heter Battery.

 

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Hello!

Just curious but, was the Heter/Enerpower 18650 1100mAh 33A LiFePO4 review planned? Along with the already reviewed 18650 1800mAh 3C it was suggested by me here (#582), just wondering.

 

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Barkuti wrote:

Hello!

Just curious but, was the Heter/Enerpower 18650 1100mAh 33A LiFePO4 review planned?

Yes, it is testing at the current time.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

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Thanks Henrik. I believe there is some market for small LiFePO4 cranking batteries. However, I wonder how much actual lifespan can be expected from a LiFePO4 battery in this regard. I mean, without some sort of adjustment modification to the vehicle (motorbike) voltage regulator.

Recently a friend of mine visited me with an old store bought small bike LiFePO4 battery. We carefully dissected the box with my rotary tool and found a set of 4x prismatic cells inside, they weren't looking very good and some were leaking a bit. A balance board was also inside, but after testing with my power supply unit I found none of the balance stages would activate with less than 3.7+V. In my opinion this is a joke because at that point the battery is more than probably receiving substantial damage. Yes, I am battery care picky. 

I kept the box just in case I decide to custom build some battery.

 

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The testing finished today and I have published the review.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

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Hi HKJ,

I spammed your newest thread already with this suggestion, but it should have been here.

I’m really curious about these:

http://www.aliexpress.com/item/4PCS-VariCore-Brand-3-2V-32700-6500mAh-Li...

Claimed specs look really nice and these seem ideal for Maglite D cell flashlight mods.
Not even expensive.

Hope you will test them some time. Beer

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HKJ, it would be useful if you removed wraps and showed us the codes on the batteries that you test, so we can check if the cells we’re getting are the same as the ones we’ve seen in your test.

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Jerommel wrote:
I’m really curious about these:

http://www.aliexpress.com/item/4PCS-VariCore-Brand-3-2V-32700-6500mAh-Li...

Claimed specs look really nice and these seem ideal for Maglite D cell flashlight mods.
Not even expensive.


The stated characteristics look good, but do not correspond to reality, since the capacity of these batteries is not 6500, but 5000mAh. In this case, we do not know at what discharge current these elements passed the test. I suspect that this was a low current, so if you take a high current, then the capacity of these LiitoKala will be even lower. Here there is one buyer who informed us about this in his recall – VariCore LiitoKala 6,5Ah
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volchyonok wrote:
Jerommel wrote:
I'm really curious about these: http://www.aliexpress.com/item/4PCS-VariCore-Brand-3-2V-32700-6500mAh-LiFePO4-Battery-35A-Continuous-Discharge-Maximum-55A-High-power/32908657643.html

The stated characteristics look good, but do not correspond to reality, since the capacity of these batteries is not 6500, but 5000mAh. In this case, we do not know at what discharge current these elements passed the test. I suspect that this was a low current, so if you take a high current, then the capacity of these LiitoKala will be even lower. Here there is one buyer who informed us about this in his recall - VariCore LiitoKala 6,5Ah (english site link)

Volumetrically speaking a 32700 cell is (32² × 70) ÷ (26² × 65) = ≈1.6313 times a 26650. Thus, nearly 5Ah for a 32700 LiFePO4 can be considered a good result. Look, for example, at any of these reviews:

A discharge test of that 32700 LiFePO4 should still be done to see what it can handle. Hope its 35A continuous current rating is true.

It is annoying when any of you post localized AliExpress links (ru, es or whatever) because stupid AliExpress sets a cookie for that locale, forcing global english site users to click on “go to global site” and also needing to fix the link by at least changing its prefix. It would be good if you were to edit your links to make them international. A global english link works for everyone.

 

Cheers Party 

Sun, 12/23/2018 - 11:53

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Barkuti wrote:
An global english link works for everyone.

Unfortunately, I don’t know how to take a picture of a text from another place, and then here to show this picture I took. But, this would hardly have helped for two reasons. First, the buyer from Russia and its text in Russian, which you do not know. Secondly, the text of this person contains a lot of grammatical errors, because of which even the most successful translator of languages ​​would not help you. Therefore, the only way out would be if I corrected the mistakes made by him in Russian, and then gave you a translation into the international language. However, then you can say that this is not the original and we are not sure that we trust this experience. In addition, I myself am also too lazy to perform such transfers, but if you do not believe the experience of that person, then no one will be offended for it. Therefore, in such cases, they say that ‘if someone does not want to learn from the mistakes of others, then he will learn from his mistakes.’
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Wellp, now that we're on the fixing errors stuff came here to fix one:

Barkuti wrote:
 A global english link works for everyone.

As indefinite article, “a” is written as “an” only when preceding vocal starting words. 

 

volchyonok wrote:
… Unfortunately, I don’t know how to take a picture of a text from another place…

For (Linux/Windows) computers <ALT + PrtSc> captures current window content in the clipboard, while <PrtSc> captures the whole screen.

For Android, <Volume Down + Power> captures the whole screen in the clipboard.

 

Fair price for those LiFePO4 cells. Quite good price here even if PostNL is selected and also available at Aliya's Battery Store (reputable seller).

 

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LoL Big Smile ended my previous post and then I was going to look up for the Review request for HKJ [Rechargeable Batteries] thread aaand… we're here! 

Could you please add those 32700 LiFePO4 cells to your review queue Henrik? 2 pieces to Denmark for €≈10.65 at Surplus xin battery Store with PostNL shipping.

Thanks.

 

Cheers Party 

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Barkuti wrote:

LoL Big Smile ended my previous post and then I was going to look up for the Review request for HKJ [Rechargeable Batteries] thread aaand… we’re here! 


Could you please add those 32700 LiFePO4 cells to your review queue Henrik? 2 pieces to Denmark for €≈10.65 at Surplus xin battery Store with PostNL shipping.

I have ordered them.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

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Can you test a VTC5D (18650) and the VTC6A (18650 if it exists and 21700 for sure)? Either a true Sony/Murata one or the Vapcell re-wrap is fine.

Would also be nice to re-test a VTC6 now that they are all Murata wraps.

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HKJ wrote:
Barkuti wrote:

LoL Big Smile ended my previous post and then I was going to look up for the Review request for HKJ [Rechargeable Batteries] thread aaand… we’re here! 


Could you please add those 32700 LiFePO4 cells to your review queue Henrik? 2 pieces to Denmark for €≈10.65 at Surplus xin battery Store with PostNL shipping.

I have ordered them.

Thumbs Up
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contactcr wrote:
Can you test a VTC5D (18650) and the VTC6A (18650 if it exists and 21700 for sure)? Either a true Sony/Murata one or the Vapcell re-wrap is fine.

Would also be nice to re-test a VTC6 now that they are all Murata wraps.


What’s the difference between VTC5A and VTC5D ?
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volchyonok wrote:

Jerommel wrote:

I’m really curious about these: http://www.aliexpress.com/item/4PCS-VariCore-Brand-3-2V-32700-6500mAh-LiFePO4-Battery-35A-Continuous-Discharge-Maximum-55A-High-power/32908657643.html


The stated characteristics look good, but do not correspond to reality, since the capacity of these batteries is not 6500, but 5000mAh. In this case, we do not know at what discharge current these elements passed the test. I suspect that this was a low current, so if you take a high current, then the capacity of these LiitoKala will be even lower. Here there is one buyer who informed us about this in his recall – VariCore LiitoKala 6,5Ah (english site link)


I saw some NOR test pics on AliExpress and they were over 6000mAh, but now i’m not sure anymore if i remember it correctly…
Many sellers have these big fat cells, but maybe there are different types being sold with that grey wrapper.
Who knows?
Either way, they seem nice for a 3D Maglite. Big Smile
Quote:

Volumetrically speaking a 32700 cell is (32² × 70) ÷ (26² × 65) = ≈1.6313 times a 26650. Thus, nearly 5Ah for a 32700 LiFePO4 can be considered a good result. Look, for example, at any of these reviews:



A discharge test of that 32700 LiFePO4 should still be done to see what it can handle. Hope its 35A continuous current rating is true.


It is annoying when any of you post localized AliExpress links (ru, es or whatever) because stupid AliExpress sets a cookie for that locale, forcing global english site users to click on “go to global site” and also needing to fix the link by at least changing its prefix. It would be good if you were to edit your links to make them international. A global english link works for everyone.


 


Cheers Party 


Sun, 12/23/2018 – 11:53


It would be good enough for me if they did 20 Amperes without too much sag.

I agree about the AE links.
If possible, please use the English language address.

Another thing, i hate when people use the advanced post editor…
It’s really a mess with code cluttering the text when you quote someone..
Oh well…
Smile

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Jerommel wrote:
contactcr wrote:
Can you test a VTC5D (18650) and the VTC6A (18650 if it exists and 21700 for sure)? Either a true Sony/Murata one or the Vapcell re-wrap is fine.

Would also be nice to re-test a VTC6 now that they are all Murata wraps.


What’s the difference between VTC5A and VTC5D ?

Only 200mAh Wink
VTC5A is a 2600mAh Typical Capacity Cell
VTC5D is a 2800mAh Typical Capacity Cell (Designed for Dyson, with some technological improvements over the VTC5A)

Can a single flapping of a butterfly's wings trigger a tornado at the other end of the world?

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HydrAxx wrote:
Jerommel wrote:
contactcr wrote:
Can you test a VTC5D (18650) and the VTC6A (18650 if it exists and 21700 for sure)? Either a true Sony/Murata one or the Vapcell re-wrap is fine.

Would also be nice to re-test a VTC6 now that they are all Murata wraps.


What’s the difference between VTC5A and VTC5D ?

Only 200mAh Wink
VTC5A is a 2600mAh Typical Capacity Cell
VTC5D is a 2800mAh Typical Capacity Cell (Designed for Dyson, with some technological improvements over the VTC5A)


Thanks. Thumbs Up
Haven’t seen them for sale yet.
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акб пришли быстро, это радует. Но у одного немного повреждена термическая оболочка, это расстроило , но не критично. Термическая оболочка и кольца со стороны “плюс” коряво натянуты , так что могу предположить, что это подделка, но только после всех проверок и тестов. Проверить сейчас не могу на ёмкость и отдачу тока, так как ещё жду imax b6. пришли заряженными до 3,2v. Буду изучать этот продукт и оставлю отзыв позже.

09 Dec 2018 23:57
Дополненные отзывы
Ёмкость оказалась чуть меньше 5000 mA/h. Покупать 2 штуки бессмысленно. Минимум 5 штук, так как моё балансирующее устройство идёт для 5 акб 100А. Придётся еще 3 покупать.

—————————————————————————————————————————————————————————————————————————————————————————————————-

translation from Russian into English:

Akb came quickly, it pleases. But one had a slightly damaged thermal envelope, which was frustrating, but not critical. The thermal shell and rings on the plus side are clumsily stretched, so I can assume that this is a fake, but only after all the checks and tests. I cannot check now for the capacity and return of current, as I am still waiting for imax b6. Came charged up to 3.2v. I will study this product and leave a review later.
  
09 Dec 2018 23:57
Augmented Reviews
Capacity was slightly less than 5000 mA / h. Buying 2 pieces is pointless. At least 5 pieces, as my balancing device goes for 5 Akb 100A. 3 more to buy.

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Jerommel wrote:

Another thing, i hate when people use the advanced post editor... It's really a mess with code cluttering the text when you quote someone.. Oh well... Smile

I always use the advanced post editor. The simple post editor cannot cope with web addresses consisting of special characters (like the ones at Henrik's site).

Since the advanced post editor can do nearly everything the simple does and much more, if I were sb56637 I'd unify the editor engine so only two choices would be seen in the drop down below: post editor and plain text.

The unified engine should be based in the advanced editor plus the good stuff missing from the simple one (like image width fit to screen, a working insert emoticon window, etc).

Yes, maybe most of you would cry for a little while but this is normal for newborns. Wink

 

Cheers Big Smile 

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Advanced editor doesn’t work in my browser. So I type html tags myself when I need to.

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Jerommel wrote:
HydrAxx wrote:
Jerommel wrote:
contactcr wrote:
Can you test a VTC5D (18650) and the VTC6A (18650 if it exists and 21700 for sure)? Either a true Sony/Murata one or the Vapcell re-wrap is fine. Would also be nice to re-test a VTC6 now that they are all Murata wraps.
What's the difference between VTC5A and VTC5D ?
Only 200mAh Wink VTC5A is a 2600mAh Typical Capacity Cell VTC5D is a 2800mAh Typical Capacity Cell (Designed for Dyson, with some technological improvements over the VTC5A)
Thanks. Thumbs Up Haven't seen them for sale yet.

I got  1/2 dozen, been available for least a few months, thought sold in a lot of places under the Vapcell wrapper, but they advertise them as VTC5D. They are right up there with the 25S - my tests get about the same performance, better than a VTC5A, least for me.

here in stock: https://www.18650batterystore.com/18650-p/vapcell-18650-2800mah-25a.htm

here also: https://liionwholesale.com/collections/batteries/products/vapcell-18650-25a-flat-top-2800mah-battery-genuine?variant=8642893381726

 

 

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Barkuti wrote:

Jerommel wrote:

Another thing, i hate when people use the advanced post editor… It’s really a mess with code cluttering the text when you quote someone.. Oh well… Smile


I always use the advanced post editor.

Grrrr…. I know… ;)
Quote:
The simple post editor cannot cope with web addresses consisting of special characters (like the ones at Henrik’s site).
That’s a feature that should be added to the simple editor then.

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