ESA Consulting Associates, Inc.
Stationary Battery Information
ESA
Date Codes Unmasked – 2015 Edition
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DATE CODES U N MASKED
Developed by
Marco W. Migliaro, PE, Life Fellow IEEE
Copyright © 2005, 2007-15 by Marco W. Migliaro.
All rights reserved.
Gr aphics by
CA Rhodes
visit: stationarybatterytraining.com for updates
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ESA
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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.
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