Samsung INR18650-29E series/version 7 date code?

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Wizzie2k

New member
Joined
Jul 21, 2021
Messages
10
Hi everybody!

Does anyone know how to interpret the date code on the latest Samsung INR18650-29E cells?
Searched the forums and tried the online "date code readers" but had no luck.

 

italianuser

Member
Joined
Feb 25, 2020
Messages
361
I found this, for INR 25R cells:

1633646466098.png


Following it says "on the cell metal can":

1633646352670.png


This is the source: http://dalincom.ru/datasheet/SAMSUNG INR18650-25R.pdf
 

Overmind

Member
Joined
Jan 16, 2019
Messages
449
Fake rebrand.
No such thing as "T" date code for originals. Last char must be a number.
The "4" means 2014.
 

Wizzie2k

New member
Joined
Jul 21, 2021
Messages
10
Interesting! I have some 350 cells of these. They are all harvested out of electric bikes. I have CDC tested (1 A) about a hundred of them and IR is consistent at 23.xx mOhm and capacity is between 2775 and 2950 mAh. The electric bike packs have manufacturing dates from late 2019 and the brand of the electric bikes is Cresent, one of the top three manufacturers in Sweden. I removed the shrinkwrap of one cell and there is five groups of markings:

E9IE
BE341

B02

W23

Q1E5
Q1E5

If these were fakes, why would I get these results? I don't think these are fakes, but that's me. What do you guys think?
 

Overmind

Member
Joined
Jan 16, 2019
Messages
449
@Wizzie2k
If it's a rebrand it does not mean it is a bad cell.
I've seen plenty of LG C4 rebranded as HE. 2800mAh instead of 3000 and lower discharge max current; other than that 100% LG original, but they were not HEs.

@italianuser
You still can't have a "T" in there.
 
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