Test/review of LiitoKala INR26650-50A 5000mAh (Cyan)

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djozz
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I can’t get my light blue ones in series either, it is close but the top is just a bit too shallow. A very low solder blob solved it.

JasonWW
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vidramon wrote:

The only complaint for now is that they can’t been connected in series.

The same is true of the regular ones, so no change there. I just add a solder blob.

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vidramon
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I use magnets when I need to connect in series and batteries are flat top, this is just a notice that they could make it to be connected in series like some other factories that make same things like Keeppower or Sanyo.

teacher
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vidramon wrote:
I don’t see any problem since capacity is as it says on the battery.
The only complaint for now is that they can’t been connected in series.
I don’t see any problem either. I was simply stating they did not seem above rated capacity, as the light blue ones were.

About half of my light blue ones will work in series. I do not think any of these were designed to work in series….. it just happens that some do.

A shame they did not just raise the flattop a tiny bit as part of the design, so they would all work in series.

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

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Barkuti
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Sorry, but this stuff is not philistine consumer market oriented. Li-ion cells were not meant to be removable or electronically unsupervised.

Cells don't work in series? They're designed that way! If you can't figure out how to solve that, you are not the target consumer of the product. 

Hope they've changed the cell to the one from Hengji Battery, at worst.

 

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

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^ .. Big Smile .. Thumbs UpBeer .. ^

Barkuti wrote:

Hope they’ve changed the cell to the one from Hengji Battery, at worst.
Amen to that!! Thumbs Up . At the very worst…… Facepalm(nothing worse than it in other words… Smile )

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

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vidramon
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What do you think when connecting this 26650 in series instead of 1 magnet to use 2 or 3… I suppose it will raise a resistance but it will also raise a current flow I guess… What you think about this ?

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I personally do not like or do not use magnets. IF for some reason I did… I would use 1.

I personally find a simple solder boob or one of THESE much easier to use and deal with on my LiitoKala 26650’s that do not work in series.
Or any other batteries for that matter. Wink

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

 .................................. "Slow is Smooth, Smooth is Fast" ...................................

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Barkuti
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Put a slight drop of Goot Super Soldering Flux over the cell's flat top, attach a clean disc shaped magnet to the top of the cell, centered; place a blob of solid Si50Pb32Sn18 above it, and then apply a preferably hot (300+°C) soldering iron tip on top with a gentle and slow movement downwards the magnet top.

The Rose's Metal pools instantly because it melts at a lower temperature than the liquid flux, with evaporates just after this, creating a very nice joint.

 

Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Viruses DON'T cause diseases, they rather are a consequence of them. Read the book “Béchamp or Pasteur” by Ethel Hume for more information.

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Βarkuti my friend , did you count losses in the way you suggest?

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shadockan, remembered me of this clip which appeared in the World's Craziest Fools Mr T show:

 

 

What do you mean with losses?

You can use a rolled up piece of wire, desoldering wick, etc. instead of a neodymium magnet, just some sort of solderable piece of lump.

The melting point of Sn50Pb32Sn18 is just below boiling water, and it takes just ≈1s for this to be done. So it's 0K: 0 Kills.

 

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Viruses DON'T cause diseases, they rather are a consequence of them. Read the book “Béchamp or Pasteur” by Ethel Hume for more information.

snakebite
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i cut the wrapper right at the bottom corner of mine.
removing the bottom overlap make mine reliably work in series.

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subscribing to this, hope to see HKJ’s test soon Wink or other reliable comparisons to the old model

DB Custom
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I got the 4 Black LiitoKala 26650 5000mAh cells yesterday. Soldered a bump on the positives for series use, will be doing some careful initial testing as I can (still under Dr.s orders and chillin)

They look good, seem to work well, but I haven’t taken comparison measurements yet…

will34
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Got these from gearbest

-All 4 arrived at exactly 3.8V
-Cycle test shows <0.2% variation in charge/discharge capacity, which means perfect battery health, most likely produced very recently.
-Capacity sightly lower than 1st gen blue wrap, which scored ~5,300mAh

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Thanks will34, good info that is nice to hear. Smile

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

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Why do people tell the arrival voltage? It’s supposed to be about 3.8v as it’s required by shipping laws, etc…

Do people tell this just to let others know that they are meeting the shipping requirements? It seems like useless information. Am I missing something?

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DB Custom
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Perhaps the arrival voltage could show if a cell is old and in rested condition has lost some voltage? Or just as a reference point? Or truth in disclosure, stating everything the charge cycle showed them?

Sometimes I notice that when charging em up the first time, usually I don’t pay it a lot of mind. As long as all 4 are very similar that’s all I care to see. So maybe in this way you know the 4 cells are matched, not one old one from 2 years ago and 3 new ones. So yeah, it could be pretty relevant if you’re using all 4 cells in one light (which I am, these)

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I don’t know. I always do it too. Just SOP as far as I am concerned. I like to know what they are when I get them & always just share it.

I honestly had no idea there was some kind of regulation that mandated 3.8V. Big Smile

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

 .................................. "Slow is Smooth, Smooth is Fast" ...................................

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JasonWW
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I might be wrong on that. It was either 3.8v for air travel so it’s mostly discharged or 3.8v might be the best voltage to store a cell at long term. Either way the battery companies always seem to send them out at that voltage.

I pick up way too much random info at BLF. Lol

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Me too. I received the 4 black 26650.. took 24 days.. i am happy with it.. now I am waiting for the series connector.. I am planning to use it on

Liitokala in convoy l6 mod.
Shockli 5500 mAh in trustfire tr j20 mod..

will34
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Mentioning the arrive voltage is some sort of a tradition, it has always been this way. I think they do a couple cycles to the cell and set the end voltage to 3.7 or 3.8V, and if some cell arrives differently it means a bad cell or inconsistency in the QC process. I do like to see perfectly matched cells on arrival and after discharge cycles, probably that information can help others too.

BTW it is extremely easy to add a solder blob top to the cells, just sightly sand the top, use your iron on the highest setting and use a low melt solder. It is way more reliable than using the spacer and reduces resistance.

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Barkuti .
I just asked for losses.
Nothing else.

I do not know the way you propose and I asked to have a better picture.

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I got my black ones a few days ago
Lii500 measured:
5238
5323
5307
5235

Only downside is that they don’t fit in those holders: https://www.aliexpress.com/item/10-Pcs-26650-Lithium-Ion-Cell-Battery-Ho... because they are bigger in diameter – there might be flashlights where those cells don’t fit.

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Aaah, you mean metal spillings, shadockan? None. Smile

I have a couple of LiitoKalas from a dismantled, work in progress powerbank, but it doesn't looks very fine on these as they only have a “dismantled” wire solder. Wink

I have to solderblob a TrustFire IMR14500 (red-gold) for a friend soon, and he already has one of those done plus an NCR18650B. I'll recall for a nice picture of this to be shot.

 

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Viruses DON'T cause diseases, they rather are a consequence of them. Read the book “Béchamp or Pasteur” by Ethel Hume for more information.

DB Custom
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Just tested between my blue and black LiitoKala 26650’s in a modified Convoy L6 (FET driver, XHP-70.2)….

Blue showed me 16.48A and did 9,108 in the light box
Black showed me 18.16A and did 9,280.5 in the light box.

192 lumens more at the sacrifice of 1.68A more draw, seems odd, but I’ve seen it where it flips, the one that has highest current doesn’t necessarily produce the most lumens.

JasonWW
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I guess that proves the new black one are just as good as the older blue.

Now we need names. We can’t just say liitokala any more. I guess it’s liitokala blue and liitokala black?

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

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will34
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Resistor modded L6:

Old: 6.85A
New: 7.28A

Not bad!

Barkuti
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The Hengi Battery cell maybe (26650-50B)?

I mentioned it in some message up there.

 

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Viruses DON'T cause diseases, they rather are a consequence of them. Read the book “Béchamp or Pasteur” by Ethel Hume for more information.

shadockan
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Barkuti wrote:

Aaah, you mean metal spillings, shadockan? None. Smile


I have a couple of LiitoKalas from a dismantled, work in progress powerbank, but it doesn’t looks very fine on these as they only have a “dismantled” wire solder. Wink


I have to solderblob a TrustFire IMR14500 (red-gold) for a friend soon, and he already has one of those done plus an NCR18650B. I’ll recall for a nice picture of this to be shot.


 


Thank you Barkuti.

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