How to Date a Battery? Code 2DEB Present.

[richardb]

Hey all, recently saw code 2DEB present in my Foxwell scan while looking into a HVAC issue. I had noticed the car starts kind of weak during the really cold days this winter.

The scanner did not show the date the battery was installed/programmed unfortunately. I did check.

The battery is BMW AGM, and has some codes, numbers and a QR code on it. It has 850 CCA part number 61 21 2 353 812 which is 92AH.

Can anyone date the battery based on anything on the physical battery? There is no date code bubble sticker removed like there are sometimes on an aftermarket battery.

Battery has QR code with the following serial:

K7235381203 and 15B2023L0609 and 412721.

Finally, a stamp on the negative terminal "30" and "15" below that.

Thought someone may be able to date this in the same fashion as a tire, lol.