Slightly flawed brand name li-ion cells international sale

M26 have 10A discharge current , 26F just 5A.

Real cost for me is product cost+ shipping cost and that means 1.5 usd/pcs ,pretty close to 2.11

please contact him

Batteries can't just look at very external parameters

Samsung 26F 2600mAH is a very high-quality electrical core, good product consistency, high cycle life

The quality of LG M26 is average

Sanyo UR18650FM 2600mAH is more expensive, close to the cost price of 3 U.S. dollars

But it's still used by many companies

Then the retail market of foreign trade is very confusing, many fakes, you will detect discrimination? That's a low price, a dime a share. Many domestic electric cores are used for rewap fake vtc5,25r etc

Or fake 25R uses 22P, fake HG2 uses MG1 or MH1,VTC5A use vtc5

I’m sure you know better , its your job .
Cannot found better shipping cost for as?

I guess you got such a cheap samsung26f
There are two possible, fake 26F or used 26F, positive and negative will leave traces of welding,disassembled from the battery pack

Reprocessing PCB

Check, please

Link to such protected 26F sale: https://www.aliexpress.com/item/Colaier-4pcs-Original-For-Samsung-protected-18650-2600mAh-3-7-V-rechargeable-battery-ICR18650-26FM-with/32798655386.html

I think the product is good. That shop was entitling itself as “Colaier Direct Sales Store” some time ago. They may have some old stock to get rid of, protected cells may be somewhat unappealing to people… but in any case I am pretty sure they avoid declaring shipping of li-ion cells to get super-cheap shipping costs for these packages (more than a month to reach home).

More on this later.

Cheers :-)

By the way, this is how this page appears by default in my smartphone screen because of the messed up link in #74, #76 and #77:

Pretty ludicrous.

Cheers ^:)

I am just curious how much does the seller charge to ship to you in Spain? US $54.74 to Australia for 4 pieces of batteries is just crazy. Even if you are buying 10 pieces of batteries, this shipping charge is still too expensive.

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