Slightly flawed brand name li-ion cells international sale

ssschen,

This has to do with them not being able to ship via China Post registered to where you live.

You can change the “Ship to” location and currency in the upper right part of the screen, by the way.

Cheers ^:)

You can check the abnormalities on this web
Why is the NCR18650 battery with PCB cheaper than the original ncr18650b flat top?

it is not old batteries

This is a very cheap packet .thanks,Barkuti

But it can't reach the United States

Thank you very much for your sharing

The price competition is very fierce in aliexpress

Dhgate is more intense, but the battery is basically fake

Thanks

we might be looking for cheaper packet

That would make the cycle a little longer

Or you can buy other goods in China, and we can send to other suppliers and send them together

If there is savings going with cheaper shipping option, I am more than happy to wait 4-6 weeks. The “Free” shipping from suppliers like GB and BG typically takes 4-6 weeks to get to me in Australia anyway.

OK
I have four unprotected GA cells.
Two were discharged to 0V by a flashlight with extremely high parasitic drain and were at that 0V for a full week.

All four charge normal
All four hold a charge normal
None get hot during charge
All four have an internal resistance between 20 and 40

Still I don’t use them and I can’t tell them apart now.

I know there are dentrides in two.

So now that is seems normal to use cells like this please experts tell me how I can sniff out the two dangerous cells.
I can’t use any without seriously endangering my family and material possessions.

Trisky do tell me how

Very interesting. Never even heard of the word “dendrites” till your post.

This is a very short but interesting read. Like out of a SciFi movie! :smiley:

What are dendrites, and why do they cause fires in lithium batteries?

The Miller, with regards to discerning the supposedly damaged cells one of the easiests ways would be to capacity test all of them on an analyzing charger. The cells which suffered a one week long 0V “break” should show a perceptible reduction in capacity.

Another way, for example, would be to charge-balance all 4 cells and set them in series, proceeding to discharge them with a constant light load of some sort while monitoring cell voltages. One way to make this unattended is equipping the cells with equal 1S BMS circuits. Damaged cells will go down earlier and their final resting voltages after weakest cell cut-off should be noticeably lower.

Hope this is of help.

Cheers

no

Yes oh sorry I did not stick a piece of paper with mAh on them.
Did test them and all four were close, it was not like two were lower.
They also took about the same time
This is a test of discharge and charge

So let’s see what Trisky can say to help me sniff out the two cells that are not safe to use but charge, discharge and hold charge like good celks, it is a little too quiet from the professional selling cells for this should be minimal knowhow before selling old rusted damaged cells on a forum with 20+K members with various skill levels.
It can’t be expected to rig up some BMS continuous discharge series setup, lol I could probably buy a lot of brand we cells for those parts.

On topic advice: I believe Trisky needs to find the most “reasonable” shipping costs for these deals to become more attractive.

I haven't asked for a shipping quote yet, but I can show you how paying just north of $1 per cell is already a deal killer in some cases: if I were to, let's say, build a high capacity battery pack, would I choose the FST 2200mAh (which is probably an effective 2100mAh cell) over the Samsung 32E, a proven, high voltage, 3100mAh class high quality cell? The FST 18650-2200mAh price, in this example, would be $1.80 ($0.80 + $1), while the Samsung 32E would be $2.60 ($1.60 + $1). In this case I'd choose the 32E without hesitation.

FastTech quotes me an average of $0.60 per cell via Sweden Post to Spain. That would be reasonable.

Cheers

Sorry but it seems you’re making too many assumptions and then asking someone 5000 miles from you to assess and evaluate issues you may or may not even have with your cells .
How do you know you have dendrites ? Doesn’t every cell have some amount of dendrites forming in them ? You’re assuming your cells that have dropped to zero have problems . Are they protected cells ?Did they really get to zero or did the circuit just trip and you read zero on your meter ?
If you’re really that worried about the two cells and your families safety them just recycle all four batteries. (or send them to me) :slight_smile:

I disagree with your opinion about whether this seller should be allowed to sell these cells here . I see him/ her as another possible potentially valuable resource of batteries.
Name me three other mainland china battery sources that have come onto the forum and openly chatted with us ?
I understand the importance of battery safety,but think it is sometimes overblown to the point of paranoia.Enough people have commented warning people about potential safety concerns . At the same time look at some well known members here asking for pricing .

Trisky, can you give us some info on shipping breakdowns?

Hello Lazy-R-US

sorry reply u late

There are only a few VTC5 orders here, and amostly sell out

Seemingly other products, customers are not interested

Do you need VTC5?

I'm not engaged in retail trade, but can offer separate freight rates

The more batteries, the more expensive the transportation, but the more cost-effective

Thank you

As i wrote
Unprotected GA cells
I have seen lots of posts about cells with dings rust and that were discharged too much that were followed by BLF advice to replace them for blnit being worth the risk.
These are in the recycle box.
Since this topic proves all the normal guidance on safety of visual flawed and probably maltreated old cells can he discarded I am still waiting on how to tell if my two maltreated cells are either safe to use or can be told apart from the two good ones.
I wrote how they act.
Rather strange that such question appears unanswerable yet we must forget all solid sounding advice given in the past so some can save a few cents.
Beyond bizarre this IMHO

I like to learn but have not read why old rusted cells have become safe nowadays and how to sniff unsafe ones out.

What is the relevance where a vendor is located?

Mountain Electronics
Li ion wholesale
Chitty chatty with us

Nkon, I called the general number way after business hours and got the owner on the phone.

Several BLFers doing a WTS with cells from time to time.

Gearbest Banggood, chitty chatty here
Fasttech, others, all present.
BLFers like M4D M4X, Freeme, Trevi lux who can give links and good prices.
AliExpress, shipping everywhere.
It doesn’t take long to find new (for example Liitokala wrapped) cells from less then $2,50 a pop with shipping.

Again, where is the way to tell if an old visually flawed cell is safe?
I find it very strange to talk about paranoia without saying why the advice that has been given by many “well known BLFers” can now be discarded.

And to conclude, if there is a way to tell safe from unsafe it is in Triskys best interest to answer my questions instead of ignoring them.
:person_facepalming:
The idea responding to simple question that can e@@£nd all discussion by throwing words like paranoia to the asker instead of supporting and call the seller ignoring the question for an answer, where is that puke emoticon whebyou need it :wink:

As i wrote
Unprotected GA cells
I have seen lots of posts about cells with dings rust and that were discharged too much that were followed by BLF advice to replace them for blnit being worth the risk.
These are in the recycle box.
Since this topic proves all the normal guidance on safety of visual flawed and probably maltreated old cells can he discarded I am still waiting on how to tell if my two maltreated cells are either safe to use or can be told apart from the two good ones.
I wrote how they act.
Rather strange that such question appears unanswerable yet we must forget all solid sounding advice given in the past so some can save a few cents.
Beyond bizarre this IMHO

I like to learn but have not read why old rusted cells have become safe nowadays and how to sniff unsafe ones out.

What is the relevance where a vendor is located?

Mountain Electronics
Li ion wholesale
Chitty chatty with us

Nkon, I called the general number way after business hours and got the owner on the phone.

Several BLFers doing a WTS with cells from time to time.

Gearbest Banggood, chitty chatty here
Fasttech, others, all present.
BLFers like M4D M4X, Freeme, Trevi lux who can give links and good prices.
AliExpress, shipping everywhere.
It doesn’t take long to find new (for example Liitokala wrapped) cells from less then $2,50 a pop with shipping.

Again, where is the way to tell if an old visually flawed cell is safe?
I find it very strange to talk about paranoia without saying why the advice that has been given by many “well known BLFers” can now be discarded.

And to conclude, if there is a way to tell safe from unsafe it is in Triskys best interest to answer my questions instead of ignoring them.
:person_facepalming:
The idea responding to simple question that can e@@£nd all discussion by throwing words like paranoia to the asker instead of supporting and call the seller ignoring the question for an answer, where is that puke emoticon whebyou need it :wink:

I once got a short circuit on a 3S2P laptop pack restoration while learning to do it properly, a cell wrap got torn with a conductive copper sheet while closing the @#$% tight fitting pack case. A few hours later the laptop wasn't booting up unplugged, I knew there was a problem. The 2 short-circuited cells were still hot, but no way I was going to put the stuff at risk, I had 2 brand new additional spare cells anyway. I threw away the short circuited ones straight into a battery recycling bin.

Cheers ^:)

What's up fellows? Are those cells performing right? Sure they do, doesn't it? :-)

I've recently had some: Seems like I got a six-pack of counterfeit/fake Samsung ICR18650-30B cells :-/

Got a couple of 30Q cells from that provider and they perform. Their protected 26F codes and performance seems legit despite the ludicrously low prices they had (shipping and handling quotes raised).

Dear Trisky, do you have high voltage cells in stock? I mostly mean either Samsung ICR18650-30B or ICR18650-32A units. I am to restore a high end laptop pack, a pretty demanding application.

Cheers ^:)

For the record if anyone interested, both me and a friend ended up buying 4x packs of the “Samsung” ICR18650-26F protected cells. We also exchanged a couple cells, as I received 'em sooner and lent him some. I did not started using them until recently, here are the FAST (1A charging) test results on my Lii-500:

Two different cell types.

Unwrapped the low capacity ones recently, their 4-lobe top shape looks Chang Jiang FST to me.

By the way, did someone receiced their packages from Trisky? Are the batteries performing well?

Cheers ^:)

I bought the 26F and also VTC5 off Trisky. Received them within a month, and very well packed too.

I did take some photos of the cells I received (the VTC5 was cleaned so well they looked new to me), and also the measured capacity (using NOR mode) on my Lii-500 for both battery types, but never got around to uploading the photos on the internet. Will do so later tonight if others are interested.

And yes, I have been using the batteries on several of my flashlights, and have not encountered any problem after 3 months of use.