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ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 1
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-15
DATE CODES UNMASKEDDeveloped by
Marco W. Migliaro, PE, Life Fellow IEEE
Copyright © 2005, 2007-15 by Marco W. Migliaro.
All rights reserved.
Graphics by
CA Rhodes
visit: stationarybatterytraining.com for updates
SMESA SMESA
©MWM 2005, 2007-152
FOREWORD
This presentation has been developed as a aid to those wishing to determine the date of manufacture or warranty date for a cell or battery. Manufacturers sometimes code dates using letters and/or numbers that are not easily understood by those responsible for the battery system. This presentation attempts to provide those persons with a guide when needed to determine the date code. Date codes are sometimes changed by the battery manufacturer and there is no guaranty that the information needed is contained in the presentation; however, it may help in ultimately identifying a date code, either with help from the battery manufacturer or using the information presented to interpret what one observes. The information contained in this presentation does not include every battery type or manufacturer.
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 2
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-153
TERMINAL OBJECTIVE
Upon completion of this training, the participant will obtain:
An overview of the typical methods used by battery manufacturers to identify the date of manufacture, warranty or both for stationary batteries
SMESA SMESA
©MWM 2005, 2007-154
DATE CODES
Are used by battery manufacturers to establish a date of manufacture for their products▬ Some manufacturers have two date codes one representing
the warranty date and the other the manufacturing date
Letters are sometimes used to represent the month or year in a date code▬ Manufacturers may omit the letters “I” and “O” from the dates
codes to avoid confusion with the numbers “1” and “0”▬ One manufacturer that omits the letter “I” for the month does
not omit it for the year, but does omit the letters “O”, “Q” & “V” for the year
Typically, a date code system should not allow the same characters to repeat for at least 10 years, based on industry standards related to date coding▬ If the battery is manufactured at more than one facility, the
date code should also identify the facility of manufacture
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 3
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-155
DATE CODES (continued)
Date codes may be located on the cell (or monobloc) cover, cell (or monobloc) post, cell (or monobloc) nameplate or a sticker on the cell (or monobloc). For some cells (or monoblocs) the date code may be “heat stamped” or may be applied by a “dot matrix” printer on the side of the cell (or monobloc) cover
If a date code cannot be found, or if found, cannot be interpreted, one may always contact the battery manufacturer for guidance. Battery manufacturers may change their date coding system or may sometimes accidently reverse the date code, so if in doubt check with the battery manufacturer
Battery manufacturers will request the battery date code if a warranty claim is filed
SMESA SMESA
©MWM 2005, 2007-156
In the presentation, the letters M, D, W and Y, are used to represent month, day, week and year, respectively
▬ For example MMYYYY, would represent a date code with a two character month and a four character year and WWYY would represent a two character week and a two character year
DATE CODES (continued)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 4
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-157
WHY IS KNOWING THE DATE CODE IMPORTANT?
It is important to know how old the battery is when inspected, since some of the conditions that may be noted can be age related or related to a specific period of manufacturing and this information can be useful when evaluating the information gathered during the visual inspection▬ For example, a large quantity of sediment in a 15 year
old vented lead-acid battery may not be a concern, but the same amount of sediment in a 2 year old vented lead-acid battery would be of concern
▬ Similarly, a manufacturer may have had an issue with post leaks for cells manufactured between January 2002 and June 2003
It is also important to know the date code to determine if a warranty claim can be made
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©MWM 2005, 2007-158
DATE CODE 1 – C&D VENTED CELLS
The date code is located on the cell nameplate
The code is MM/YY (May 2011 for this cell)
The letter that follows represents the plant the cell was manufactured at (A=Attica, IN)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 5
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-159
DATE CODE 2 – C&D VENTED CELLS
The date code is located on the cell nameplate
The code is MM/YY(March 2005 for this cell)
The letter that follows represents the plant the cell was manufactured at (A=Attica, IN)
SMESA SMESA
©MWM 2005, 2007-1510
DATE CODE 1 – C&D LIBERTY 1000s
The date code is on the nameplate
The code is MM-YY(January 2002 for this battery)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 6
©MWM 2005, 2007-15
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©MWM 2005, 2007-1511
DATE CODE 2 – C&D LIBERTY 1000s
The date code is on the nameplate following the word ship
The code is MM-YY(October 1999 for this battery)
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©MWM 2005, 2007-1512
DATE CODE 1 – C&D LIBERTY AT
The date code is on a sticker on the cell cover
The code is YMMDD where the year is represented by the letters in the alphabet Y=2004 (December 8 and November 29, 2004 for these cells)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 7
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1513
DATE CODE 2 – C&D LIBERTY AT
The date code is on the nameplate
The code is MM/YYYY (March 2008 for this cell)
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©MWM 2005, 2007-1514
DATE CODE 1 – C&D DYNASTY
There are two date codes on these batteries
The warranty date code is on a label the cover MMYY May 2012 for this battery
The date of manufacture is located on the side of the cover and is the first five characters (YYMDD) March 21, 2012 for this battery▬ A to M, excluding I, are
used for the months January to DecemberThe warranty date code is normally
at least one month after the date of manufacture
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 8
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1515
DATE CODE 2 – C&D DYNASTY TELECOM
The warranty date code is under the bar code on a label located on the cover
The date code is MMYY(October 2007 for this battery)
SMESA SMESA
©MWM 2005, 2007-1516
DATE CODE 1 – ENERSYS VENTED CELLS
The date code is in the first four characters of the cell’s serial number*
The first two are the plant the cell was manufactured at (O5=Sumter, SC)
The next two are the YM(W=1998, C=March)
EnerSys uses A to L, including I for the months
The year starts back at A once Z is used (i.e., 2001)
*In some instances the date code may be a three or four character code located above a bar coded serial number for the cell, with the last two characters being the date code
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 9
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1517
DATE CODE 2 – ENERSYS VENTED CELLS
The date code is the first six characters of the cell’s serial number*
The first two are the year, the second two are the month and the last two are the day of the month (July 16, 2001 for this monobloc)
The next two are the shift and factory where the cell was manufactured
*In some instances the date code may be a three or four character code located above the bar coded serial number for the cell, with the last two characters being the date code YM, following the code on the previous slide
SMESA SMESA
©MWM 2005, 2007-1518
DATE CODE 3 –ENERSYS VENTED CELLS
The date code is now on a separate sticker and is straightforward MM/YYYY
The first two are the month (February and November in these examples)
The next four are the year (2004 in these examples)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 10
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1519
DATE CODE 5 – ENERSYS - EU VENTED CELLS
The date code is located on the blue ring on the negative post
The ring has a large two-digit underlined number on it representing the year and the numbers 1 to 12 around the ring represent the months of the year
There is a “.” molded in the cover opposite the negative polarity mark and the month of manufacture is placed next it. In this instance the date code is November 2011
SMESA SMESA
©MWM 2005, 2007-1520
DATE CODE 1 – ENERSYS VRLA CELLS
The date code is in the first four characters of the cell’s serial number located on the steel module frame
The first two are the plant the cell was manufactured at (O5=Sumter, SC)
The next two are the YM(W=1998, J=October)
EnerSys uses A to L, including I for the months
The year, represented by the letters A to Z, starts back at A once Z is used (i.e., 2001)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 11
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1521
DATE CODE 2 –ENERSYS VRLA CELLS
The date code is now on a separate sticker and is straightforward MM/YYYY
The number before the “/ or –” is the month (June and March in these examples)
The four after the “/ or –” are the year (2006 and 2007 in these examples)
SMESA SMESA
©MWM 2005, 2007-1522
DATE CODE – ENERSYS POWER SAFE V VRLA BATTERY
The date code is on a separate sticker on top of the jar near the cell positive terminal and is straightforward MMYYYY (December 2009 for this battery)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 12
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1523
DATE CODE – ENERSYS POWER SAFE Vb VRLA BATTERY
The date code is on a separate sticker located on the battery nameplate label and is straightforward MM/YYYY (March 2012 for this battery)
SMESA SMESA
©MWM 2005, 2007-1524
DATE CODE – ENERSYS TYPE SBS VRLA BATTERY – TOP CONNECTED
The date code is on a separate sticker between the cell terminals and is straightforward Month-YY (July 2007 for this battery)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 13
©MWM 2005, 2007-15
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©MWM 2005, 2007-1525
DATE CODE – ENERSYS TYPE HX VRLA BATTERY – TOP CONNECTED
The date code is on a separate sticker near the cell positive terminal and is straightforward MMYYYY (September 2006 for this battery)
SMESA SMESA
©MWM 2005, 2007-1526
DATE CODE – ENERSYS TYPE HX VRLA BATTERY – FRONT CONNECTED
The date code is on a separate sticker near the cell positive terminal on the top of the battery and is straightforward MMYYYY(November 2009 for this battery)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 14
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1527
DATE CODE – ENERSYS CYCLON® 1
The date code is a group of 5 numbers located on the bottom of the cell container, the first two numbers are the year and the remaining three, the day of the year YYDDD (the 248th day of 2013 for this cell)
SMESA SMESA
©MWM 2005, 2007-1528
DATE CODE – ENERSYS CYCLON® 2
The date code is on a sticker on the monobloc cover and is straightforward MMYYYY (September 2006 for this battery)
For individual cells the date code is located on the bottom of the cell container
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 15
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1529
DATE CODE – ENERSYS CYCLON® 3
The date code is located on the side of the plastic container and is a group of 5 numbers, the first two numbers are the year and the remaining three, the day of the year YYDDD (the 22nd
day of 2013 for this battery)
For individual cells the date code is located on the bottom of the cell container
SMESA SMESA
©MWM 2005, 2007-1530
DATE CODE – GNB VENTED CELLS
The date code is stamped on a positive post
The code is YYMM (May 2002 and January 2005 for these cells)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 16
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1531
DATE CODE 1 – GNB ABSOLYTE The date code is stamped on the
steel module and consists of a three letter code
▬ The second and third letters are MY (November 2000 and June 2006 for these modules)
▬ A to M, excluding I, are used for the months January to December; however, I is used for the year
▬ The first letter is the plant the module and cells in it were manufactured at
▬ The year, represented by the letters A to Z, excluding O, Q & V starts back at A once Z is used (i.e., 1997 & 2020)
SMESA SMESA
©MWM 2005, 2007-1532
DATE CODE 2 – GNB ABSOLYTE The date code is on a label
placed on the steel module and consists of a three letter code
▬ The second and third letters are MY (March 2008 for this modules)
▬ A to M, excluding I, are used for the months January to December; however, I is used for the year
▬ The first letter is the plant the module and cells in it were manufactured at
▬ The year, represented by the letters A to Z, excluding O, Q & V starts back at A once Z is used (i.e., 1997 & 2020)
The date code is a stamp or label on the side of the steel module
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 17
©MWM 2005, 2007-15
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©MWM 2005, 2007-1533
DATE CODE – GNB SPRINTER
The date code is on a label on the side of the plastic container
The code is shown two ways
▬ The first is a letter and number representing MY (December 2001 for this example), where A to M, excluding I, are used for the months January to December
▬ The second is the month, followed by numbers representing MM-Y
With a single digit for the year one may need to verify the installation date to determine the
year (e.g., 1 could be 1991 or 2001)
SMESA SMESA
©MWM 2005, 2007-1534
DATE CODE – GNB MARATHON
The date code on this front connected battery is on a label on the rear of the plastic container
The code is shown two ways▬ The first is a letter and number representing MY (December 2001
for this example), where A to M, excluding I, are used for the months January to December
▬ The second is the month, followed by numbers representing YY▬ With a single digit for the year one may need to verify the installation
date to determine the year (e.g., 9 could be 1999 or 2009)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 18
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1535
DATE CODE – BAE
The date code is on a label located on the cell cover. The MMYY for the date code are punched on the label
For this battery the date code is December 2003
SMESA SMESA
©MWM 2005, 2007-1536
DATE CODE – EAST PENN UNIGY I
The date code is on the nameplate on the battery container
The code is YYMM(February 2003 for this cell)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 19
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1537
DATE CODE – EAST PENN UNIGY II
The date code is on the nameplate on the steel module
The code is YYMM (June 2003 for this module)
There is also a date code on the side of the steel module (indicating when the module was manufactured)
The code is WW YY (week 22 of 2003 for this module)
SMESA SMESA
©MWM 2005, 2007-1538
DATE CODE – EAST PENN TELECOM
The date code is on the nameplate on the battery container
The code is MMYY(September 2004 for this cell)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 20
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1539
DATE CODE – EAST PENN FRONT CONNECTED
The date code is on a label beneath the nameplate on the battery container
The code is MMYYYY(May 2009 for this battery)
SMESA SMESA
©MWM 2005, 2007-1540
DATE CODE 1 – FIAMM/ALCAD/SAFT VENTED CELLS
The date code is stamped on the cell cover and consists of a letter followed by three numbers
▬ The first letter represents the year (H is 2001, 65th day)
▬ The letters used are based on the Italian alphabet, A to Z, which does not use the letters J, K, W, X and Y and starts back at A once Z is used (i.e., 2014)
▬ The three numbers represent the day of the year (i.e., 1 to 365, or 1 to 366 for leap years) that the cell was manufactured on
▬ The other letter(s) are the cell type and manufacturing plant
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 21
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1541
DATE CODE 2 – FIAMM/ALCAD/SAFT VENTED CELLS
The date code is on a label on the cell cover and consists of a letter followed by three numbers
▬ The first letter represents the year (T is 2011, 204th day; U is 2012, 73rd day)
▬ The letters used are based on the Italian alphabet, A to Z, which does not use the letters J, K, W, X and Y and starts back at A once Z is used (i.e., 2014)
▬ The three numbers represent the day of the year (i.e., 1 to 365, or 1 to 366 for leap years) that the cell was manufactured on
▬ The other letter(s) are the cell type and manufacturing plant
SMESA SMESA
©MWM 2005, 2007-1542
DATE CODE – FIAMM/ALCAD/SAFT MONOLITE VRLA BATTERY
The date code using a dot matrix printer is placed on the cell cover and consists of a letter followed by three numbers
▬ The first letter represents the year (O is 2006, 124th day)
▬ The letters used are based on the Italian alphabet, A to Z, which does not use the letters J, K, W, X and Y and starts back at A once Z is used (i.e., 2014)
▬ The three numbers represent the day of the year (i.e., 1 to 365, or 1 to 366 for leap years) that the cell was manufactured on
▬ The other letter(s) are the cell type and manufacturing plant
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 22
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1543
DATE CODE 3 – FIAMM/ALCAD/SAFT MONOLITE VRLA BATTERY
The date code is on a label on the cell cover and consists of a letter followed by three numbers
▬ The first letter represents the year (T is 2011, 295th day)
▬ The letters used are based on the Italian alphabet, A to Z, which does not use the letters J, K, W, X and Y and starts back at A once Z is used (i.e., 2014)
▬ The three numbers represent the day of the year (i.e., 1 to 365, or 1 to 366 for leap years) that the cell was manufactured on
▬ The other letter(s) are the cell type and manufacturing plant
SMESA SMESA
©MWM 2005, 2007-1544
DATE CODE – HOPPECKE
The date code is on a label on the cell cover, separate from the cell nameplate
The code is MM/YY(May 2010 for this cell)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 23
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1545
DATE CODE – HBL VRLA CELLS
The date code is on a sticker affixed to the side of the steel module and is DD.MM.YY (October 2, 2006 for this battery)
SMESA SMESA
©MWM 2005, 2007-1546
INTERSTATE VRLA BATTERY – TOP CONNECTED
The date code is on a separate sticker near the cell positive terminal and is straightforward MMYYYY (February 2014 for this battery)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 24
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1547
MIDAC/ALCAD/SAFT ETERNACELL VENTED CELLS
The date code is a four digit number on the side of the cell cover just above the jar-to-cover seal and is MMYY (June 2010 for this cell)
SMESA SMESA
©MWM 2005, 2007-1548
DATE CODE 1 – NORTHSTAR
The date code is on a label on the side of the plastic container
The code is straightforward and is MMYYYY (August 2005 for this battery)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 25
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1549
The date code is on a label on the side of the plastic container
The code is straightforward and is DDMYY (11 August 2005 for this battery)
DATE CODE 2 – NORTHSTAR
SMESA SMESA
©MWM 2005, 2007-1550
DATE CODE 1 – TAB BATTERY (MTI TECHNOLOGIES OR ALPHA)
The date code is on a label located on the cell cover. The DDMMYYYY for the date code are indicated (i.e., “blacked out”) on the label
For these cells the date code are December 15, 2003 and September 16, 2013
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 26
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1551
DATE CODE 2 – TAB BATTERY (MTI TECHNOLOGIES)
The date code is heat stamped as YYMDD or YYMMDD on the cell cover.
For this cell the date code is June 18, 2001
SMESA SMESA
©MWM 2005, 2007-1552
DATE CODE – TYCO
The date code is on the nameplate on the steel module
The code is YYMM (June 2002 for this module)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 27
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1553
DATE CODE – WERKER
The date code is on a label on the end of the plastic container
The date code consists of a letter and number representing MY (April 1999 and March 2000 for this example)
▬ With a single digit for the year one may need to verify the installation date to determine the year (e.g., 0 could be 1990 or 2000)
SMESA SMESA
©MWM 2005, 2007-1554
DATE CODE 1 – ALCAD NiCd
The date code is on the cell container
The code is MM/YY(July 2003 for this cell)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 28
©MWM 2005, 2007-15
SMESA SMESA
©MWM 2005, 2007-1555
DATE CODE 2 – ALCAD NiCd
The date code is on the cell container
The code is YYMM(May 2005 for this cell)
SMESA SMESA
©MWM 2005, 2007-1556
DATE CODE 1 – SAFT NiCd
The date code is on the cell container
The code is MM/YY (March 2002 for this cell)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 29
©MWM 2005, 2007-15
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©MWM 2005, 2007-1557
DATE CODE 2 – SAFT NiCd
The date code is on a label located on the side of the cell container
The code is YYMM(December 1994 and November 2008 for these cells)
SMESA SMESA
©MWM 2005, 2007-1558
DATE CODE – VARTA NiCd
The date code is located on the bottom of cell container
The code is YYMM (February 2002 for this cell)
ESA Consulting Associates, Inc.Stationary Battery Information
Date Codes Unmasked – 2015 EditionPage 30
©MWM 2005, 2007-15
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©MWM 2005, 2007-1559
DATE CODE 1 – NIFE NiCd
The date code is on the cell container
The code is YQ, where a random letter was used for the year and the letters N, I, F, E were used to represent the 1st, 2nd, 3rd and 4th quarters, respectively. The letter Y was used for 1998, so this cell was manufactured during the 3rd quarter of 1988. Since the letter representing the year is random, the manufacturer would have to be consulted in any case