Help required! LG Chem 18650 date codes dilemma

Batteries and Chargers Rechargeable Batteries
1

Hello forum dwellers,

I have begun my epic quest of cataloguing serveral hundreds of 18650 cells harvested from old laptop battery packs. It seems like I can find information about many of the manufacturers by using Google but the darn LG cells are drivning me nuts. How the beep can I find out when my cells were manufactured? There is some good info about the date codes of Sony, Sanyo, Samsung etc. but I can’t find jack regarding LG cells. Perhaps I can find some help over here? :slight_smile:

Inserted below, an image of the infamous cell…

Thank you kindly
//Magnus

2

From what information I kind find on this one, it’s a 2200 mAh cell.

The second row seems, based on images of similar cells, to be an incremental id number.

The last row has the same last two digits in every image (P2).

If there’s a manufacturing date it’s probably coded in the first seven digits, not sure how though. Bet someone else here does! :slight_smile:

Google indicates 2009-2012 on most hits.

3

I have only processed 110 cells so far and they were all manufactured between 2004 and 2012. I have managed to get accurate dates on all but the LG’s, hence this post. :slight_smile:

4

Shameless bump, and a new set of unknown LG’s…
A guess anyone or perhaps someone here is a master code breaker? :wink:

5

Will try another bump - in vain? :confused:

6

Here are three or four packs (I think that the teal colored cells are from two different packs) more for reference. Maybe someone can figure something out...!

All have three (3) lines of information. I have only seen LG specification sheets which lists two lines of information; so the three lines here are a puzzle.

https://drive.google.com/open?id=0B-5T8-qSuhKwc3hJRXFsSTktTUU

https://drive.google.com/open?id=0B-5T8-qSuhKwU1hmaDZsTHhkSlE

https://drive.google.com/open?id=0B-5T8-qSuhKwZjFKeUN0SkZPSDA

I apparently don't know how to add images.... Let me know if you can't see the images and I'll try and figure out how to properly post images.

-d

7

This site for 18650 date codes has worked for me, try this:

EDIT: just tried the cell in your first post and it comes up OCT. 2006

8

If you type in M185 July 2013 comes up. I dont know if this is correct or not.

9

Anyone know what the third line is?