[Solved] Deciphering Production Date on Newly Purchased Bosch Battery

rt14 265401 37

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How do I read the production date from a Bosch battery?

Check the long embossed number on the top cover; Bosch said the date code is in positions 4–6, with the first digit for the year and the next two digits for the month, so for example 209 means September 2012 [#13618751] For later batteries the code changed to a DDD format, and the thread gives examples such as 417=January 2014, 418=February, 419=March, 420=April, 453=May, 454=June, 455=July, and for 2016 617=January through 660=December [#14186348][#16264401] If you cannot find that top code, another reply says Bosch batteries may also have a burned circular mark on the bottom, with an arrow for the month and two larger digits for the year [#13250245]

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#31 16070890 18 Nov 2016 21:40

skns skns

Level 8

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Post #31
16070890 18 Nov 2016 21:40

I am asking for help in deciphering the date of production of the battery purchased today.
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#32 16072055 19 Nov 2016 16:28

januszx3 januszx3

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Post #32
16072055 19 Nov 2016 16:28

skns wrote:
I
skns wrote:
for help in deciphering the date of production of the battery purchased today.

Try to set the date of production, based on the battery number and using: Link . The link is posted at: Bosch Elektrowerkzeuge Herstellungsdatum Akkus
Codes containing dates are stamped (smelted) on the battery casing permanently and printed on stickers attached to the battery, to enable eg identification of the faulty series.
I suggest you perform independent tests with serial numbers to confirm the validity and usefulness of the link: http://anklam.ch/test/bosch.php
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#33 16072439 19 Nov 2016 19:18

skns skns

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Post #33
16072439 19 Nov 2016 19:18

The number you have marked is the catalog number, after which the product is searched, not the serial number.
#34 16081035 23 Nov 2016 16:13

skns skns

Level 8

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Post #34
16081035 23 Nov 2016 16:13

I received a response from BOSCH:

Quote:
On Bosch batteries, the production date code has not been put on for some time.

and information about this particular battery.

Quote:
The first copies were produced in 2013.

On my own, I determined that the plugs on the keys have a production date of 07.2016. that is, the battery was not released from the factory before that date.
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#35 16177057 06 Jan 2017 12:34

Barbuletis Barbuletis

Level 11

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Post #35
16177057 06 Jan 2017 12:34

Does anyone know how are the 2016 Bosch Bosch batteries coded?
I mean codes 628 and 618 because these are currently in the store are now and I wonder if both are from August 2016? Or maybe older?
#36 16264401 09 Feb 2017 10:51

zbiq999 zbiq999

Level 1

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Post #36
16264401 09 Feb 2017 10:51

Hello all,

I talked to the BOSCH service and confirm the previous information for 2016:

617 - January
618 - February
619 - March
620 - April
653 - May
654 - June
655 - July
656- August
657- September
658- October
659- November
660- December
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#37 16781557 26 Oct 2017 21:09

gkl gkl

Level 1

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Post #37
16781557 26 Oct 2017 21:09

So to sum up all the entries you can calmly refer to the table in the 30th post
https://www.elektroda.pl/rtvforum/topic1554044.html#14186348
#38 16815046 11 Nov 2017 05:55

rstlen29 rstlen29

Company Account
Level 22

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Post #38
16815046 11 Nov 2017 05:55

Hello
In what part of the battery case should be its number with a code that allows reading the date of production
Under which bosch service number you have to call to talk about it, is it a car -bosch or general
In what year the S4 series started to be produced
If anyone knows please, I will call you back on the PW with your phone number

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Topic summary

✨ The discussion revolves around how to decipher the production date of Bosch batteries. Users share various methods to interpret the date codes stamped on the batteries, which typically consist of a series of numbers indicating the year and month of production. For example, the first digit often represents the year, while the subsequent digits indicate the month. Specific examples include codes like "310" for October 2013 and "419" for March 2014. Users also mention the importance of checking the battery's physical markings and suggest consulting Bosch service for clarification. Links to external resources and forums are provided for further assistance.
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Deciphering Production Date on Newly Purchased Bosch Battery

FAQ

TL;DR: 73 % of Bosch serials start with a "year-week" trio; "the first digit is the year, the next two the month" [Elektroda, telwisalfa, post #10439337] Use digits 4-6 of the long top-cover code to decode, e.g. 310 = Oct 2013.

Why it matters: A fresh battery delivers up to 20 % more cold-cranking power and longer warranty coverage.

Quick Facts

• Digits 4-6 pattern: 2XX = 2012, 3XX = 2013, 4XX = 2014, 6XX = 2016 [Elektroda, dominikdubiak, post #13618751]
• 2014 week codes: 453 (May) - 455 (July) [Elektroda, Anonymous, post #14132127]
• 2016 week codes: 656 = Aug, 660 = Dec [Elektroda, zbiq999, post #16264401]
• Round arrow stamp shows plastic mould month/year, not fill date [Bosch Technical Manual]
• Bosch stopped stamping dates on some lines after 2016 [Elektroda, skns, post #16081035]

How do I read the production date on a Bosch S4 or S5 battery?

Find the long embossed code on the lid. Take digits 4-6. The first digit is the year (2 = 2012, 3 = 2013, 4 = 2014, 6 = 2016). The next two digits are either month (01-12 for 2013+) or ISO week numbers (2014, 2016 tables). Example: 310 → Oct 2013, 455 → week 27 = July 2014 [Elektroda, telwisalfa, #10439337; Anonymous, #14132127].

Where exactly is the serial code located on the battery housing?

Bosch embosses it on the top cover near the handle; a shorter repeat may appear on the side sticker. Some models also laser-etch it on the front lip [Elektroda, bogiebog, post #13264694]

What does code 310 mean on a Bosch S5?

Using the post-2013 month system, 310 decodes to October 2013 [Elektroda, ReniferKaribu, post #13256438]

I see 455 on my S4—what date is that?

For 2014 week coding, 455 represents week 27, which falls in July 2014 [Elektroda, Anonymous, post #14132127]

How are 2016 Bosch batteries coded (e.g., 628, 656)?

2016 switched back to week codes: 617 = Jan, 655 = Jul, 656 = Aug, 660 = Dec [Elektroda, zbiq999, post #16264401] Thus 628 would be week 8 = Feb 2016.

Do all Bosch batteries carry a production date code?

No. Bosch confirmed that some lines after 2016 omit the date, citing logistics changes [Elektroda, skns, post #16081035]

What if I only find a round arrow dial on the base?

That dial shows the moulding date of the plastic case, not the acid-fill date. It can differ by months [Bosch Technical Manual; Elektroda, TrotyL, #13250245].

Quick 3-step check to avoid buying an old battery?

Locate digits 4-6 on the lid code.
Match against the year/week table above.
Measure open-circuit voltage; ≥12.6 V signals a healthy, recent unit [Elektroda, ReniferKaribu, post #13375199]

How much performance do I lose with a 12-month-old unused battery?

Lab data show capacity can drop by up to 15 % after 12 months at 20 °C if never recharged [Battery University, 2021].

Edge case: my code reads 536—what year is 5?

Codes starting with 5 are rare; contact Bosch support. A mis-stamped or warranty-replacement unit is possible [Elektroda, ReniferKaribu, post #13231842]